This appeal brings to the court an internecine dispute among members of the Massachusetts Medical Society (Society) regarding how best to challenge payment practices of Blue Cross of Massachusetts, Inc. (Blue Cross) and Blue Shield of Massachusetts, Inc. (Blue Shield) that effectively limit the fees that can be earned by Massachusetts physicians who render services to Blue Cross and Blue Shield subscribers. The case comes to us in an unusual posture. The Society, having lost control of litigation brought by four individual physicians but with its full financial support, moved, along with two individual physicians, to intervene in order to protect its interests in the action. By their complaint in intervention the Society and the two individual physicians also sought to enlarge the scope of the claims against Blue Cross and Blue Shield, a litigation strategy disagreement which had contributed to the schism between them and the original plaintiffs. The district court in an unexplicated order allowed the intervention, but because it denied plaintiff-intervenors (intervenors) the opportunity to raise their new claims, they have appealed. We conclude that no final order from which appeal would lie exists, and that the district court’s order did not effectively deny the intervenors preliminary injunctive relief so as to create a risk of irreparable injury pendente lite. We therefore dismiss the appeal for lack of jurisdiction.
I.
Blue Shield is a nonprofit medical service corporation that offers prepaid plans that provide coverage for the cost of medical services rendered by physicians. Blue Cross is a nonprofit hospital service corporation that offers plans covering the cost of hospital and related medical care. The organizations together issue and administer joint subscriber contracts offering their services to the public under authority of Massachusetts law.
The original plaintiffs and intervenors primarily object to two basic restrictions promulgated by Blue Shield in concert with Blue Cross. First, Blue Shield, which enters into contracts with physicians and other health care providers in Massachusetts, requires “participating physicians” to accept as full payment for any covered services an amount equal to 95% of their usual and customary charges, the latter unilaterally determined by Blue Shield. Participating physicians must therefore agree not to bill a Blue Shield subscriber for the difference between what the physician would normally charge and the amount allowed by Blue Shield (“balance billing”). The second restriction promulgated by Blue Shield, which effectively enforces the ban on balance billing, is contained in its contracts with its subscribers. In these contracts Blue Shield states that it will not cover the cost of either nonemergency medical services rendered in Massachusetts by any physicians with whom Blue Shield has not entered into a contract or emergency care provided by such “nonparticipating physicians” when a participating physician could have rendered the service. Thus only participating physicians, who in their contracts with Blue Shield have agreed to the ban on *546 balance billing, are entitled to claim reimbursement from Blue Shield. 1
To challenge these practices, the Society sponsored a series of actions against Blue Cross and Blue Shield. The instant lawsuit, commenced on March 10, 1978, is the third of four such actions. 2 It was brought by • four Massachusetts physicians represented at the Society’s expense by two law firms, Warner & Stackpole and Dickstein, Shapiro & Morin. Although it did not name the Society as a plaintiff, the Society paid for substantially all counsel fees and the case was conducted in many respects as if the Society were the client. 3 Like its predecessor antitrust action, Hedberg v. Blue Cross of Massachusetts, Inc., see supra note 2, the instant action alleges violations of §§ 1 and 2 of the Sherman Act. Unlike its predecessor, the instant action did not seek damages but only injunctive relief. And unlike its predecessor, the instant action was not brought as a class action.
The action proceeded by first amended complaint, and on March 31 the original plaintiffs filed a motion for a preliminary injunction. Thereafter defendants filed a motion to dismiss, relying primarily on the “state action” defense of
Parker v. Brown,
This court vacated the judgment of the district court in
Kartell v. Blue Shield of Massachusetts, Inc.,
Meanwhile, during the summer of 1981 the Society, upset at the slow progress of the Kartell action and legal fees it had incurred in excess of $500,000, determined that the interests of its constituents would best be served by changing counsel and litigation strategy. The original individual plaintiffs disagreed, 5 however, and refused to cooperate with the Society. 6 The Society therefore found itself in the awkward position of having lost control of a lawsuit it had financed for three years. It retained new counsel. Shortly thereafter, the Supreme Judicial Court filed its opinion answering the certified questions. The intervenors, a participating physician, a nonparticipating physician, and the Society, then moved to intervene in the instant action pursuant to both Fed.R.Civ.P. 24(a), as of right, and 24(b), by permission. In conjunction with their motion to intervene they filed a “Complaint of Intervenor-Plaintiffs.” The proposed complaint in intervention differs from original plaintiffs’ first amended complaint in three principal respects. First, the proposed complaint seeks relief on behalf of two classes of physicians, participating and nonparticipating. It also adds claims for damages as well as injunctive relief. Finally, the proposed complaint appears to assert broader legal theories than does the first amended complaint. 7
*548 The district court, in a cryptic order, dismissed the Hedberg action, allowed the intervention in this proceeding, but barred intervenors from introducing any new claims in their complaint in intervention. 8 The court did not indicate whether it had acted under authority of Rule 24(a) or 24(b).
Intervenors filed a timely notice of appeal. Defendants moved to dismiss under Local Rule 12 for lack of appellate jurisdiction. Expressing some doubts about the appealability of the court’s order, on April 14, 1982, this court issued a Memorandum and Order “hold[ing] the motion to dismiss for lack of jurisdiction in abeyance pending full briefing of the case.” Because we now conclude that we are without jurisdiction of the appeal we do not reach the substantive question whether the district court properly allowed the intervention without allowing intervenors to raise any new claims at this stage of the litigation.
II.
The intervenors on appeal maintain that the district court erred in barring them from raising the claims in their complaint in intervention not already before the court. They argue that as intervenors of right under Fed.R.Civ.P. 24(a)(2) they are entitled to assert all claims relating to the nature of the relationship between Massachusetts physicians and Blue Cross and Blue Shield. In support of their claim that this court has jurisdiction to hear the appeal, notwithstanding that the underlying action is still pending in the district court, intervenors assert two bases of appellate jurisdiction. They argue that the district court’s order is appealable as a final order because it denied them the full intervention of right to which they are entitled. Alternatively, intervenors assert that the district court’s order is immediately appealable under 28 U.S.C. § 1292(a)(1) as the denial of injunctive relief. Neither ground is adequate to support the appellate jurisdiction of the court at this time.
A.
Intervenors’ first argument for jurisdiction is predicated on their asserted status as intervenors of right. They argue that once entitled to intervene of right they are entitled to raise all claims that relate to the restrictive policies of Blue Cross and Blue Shield. Because they have not been granted full intervention, the argument continues, they are entitled to immediate appellate review of the district court’s refusal to allow them to raise the claims in their complaint in intervention.
A division of authority exists regarding whether immediate appeal lies from the denial of a motion to intervene of right under Rule 24.
9
The circuits are in accord,
*549
however, that no immediate appeal lies from a grant of intervention.
See, e.g., Brown v. New Orleans Clerks & Checkers Union,
The case at bar poses the question of the appealability of an order making intervenors party to the action but limiting the claims that can be asserted by them. Whether such an order should be treated as a final, appealable order was directly addressed in
Shore v. Parklane Hosiery Co.,
The
Parklane Hosiery
court began by noting that unlike persons denied intervention, who cannot appeal from any subsequent order or judgment in the litigation, successful intervenors acquire full status as parties and can therefore prosecute a subsequent appeal.
The order appealed from does not meet these requirements. It made appellants parties to the litigation, thus giving them the right to appeal from an unsatisfactory final order. On that appeal, this Court may review the district court’s refusal to grant all of appellants’ requested relief, including their application for a stay which was incorporated in the notice of motion for intervention. The district court’s order is therefore interlocutory and cannot now be reviewed on appeal.
Id. (citations omitted).
The court also held, alternatively, that even if the order appealed from were construed as a partial denial of intervention, the better practice would be to dismiss for lack of jurisdiction, since such a practice both would insure the intervenors full review when the merits of the underlying claims were also before the court and would comport with the Supreme Court’s “[long established] policy against piecemeal appeals.”
Id.
(quoting
Gardner v. Westing
*550
house Broadcasting Co.,
Intervenors argue that Parklane Hosiery is inapposite, and they attempt to derive a right of immediate appeal of the order from what they argue is their right as intervenors of right under Rule 24(a) to raise all related claims. Such immediate review is necessary, they maintain, to protect their full right of intervention.
We find the reasoning of
Parklane Hosiery
persuasive
11
and conclude that the district court’s order in the ease at bar should be treated as a grant of intervention, and as such is not now appealable. The intervenors were allowed to intervene and, as parties to the suit with full appellate rights in this action, can adequately protect their interests on appeal from a final decision.
See Newport News Shipbuilding & Drydock Co.
v.
Peninsula Shipbuilders’
Association,
Our conclusion that an appeal is impermissible at this juncture is reinforced by a consideration of the nature of the dispute between the plaintiff factions underlying this litigation. The basis for the intervention is, at bottom, the recent antagonism that has developed between the Society and the original plaintiffs. By allowing the Society a circumscribed reentry into the lawsuit, the district court essentially reestablished the status quo ante. 12
In proffering their new claims, however, intervenors are attempting to go beyond simply protecting their interests as they existed before the rift developed between the Society and the original plaintiffs. Rather, they seek the functional equivalent of an amendment to the complaint now before the district court. Because the original plaintiffs amended their complaint once as of right while acting on behalf of the Society, allowance of further amendment lies in the discretion of the district court, Fed.R.Civ.P. 15;
see Zenith Radio Corp. v. Hazeltine Research, Inc.,
We therefore hold that the district court’s order allowing intervention without leave to file an amended complaint is not appeal-able as the denial of intervention.
B.
Intervenors’ second argument urges jurisdiction because the district court’s order had the effect of denying injunctive relief. For an order of the district court to be appealable on an interlocutory basis under 28 U.S.C. § 1292(a)(1)
14
it is not necessary that the order by its terms refuse an injunction. Rather, orders that have the “practical effect” of denying an injunction will sometimes be appealable under section 1292(a)(1).
Carson v. American Brands, Inc.,
For an interlocutory order to be immediately appealable under § 1292(a)(1) ... a litigant must show more than that the order has the practical effect of refusing an injunction. Because § 1292(a)(1) was intended to carve out only a limited exception to the final-judgment rule, we have construed the statute narrowly to ensure that appeal as of right under § 1292(a)(1) will be available only in circumstances where an appeal will further the statutory purpose of “permit[ting] litigants to effectually challenge interlocutory orders of serious, perhaps irreparable, consequence.” Baltimore Contractors, Inc. v. Bodinger, [348 U.S.] at 181,75 S.Ct. at 252 . Unless a litigant can show that an interlocutory order of the district court might have “serious, perhaps irreparable, consequence,” and that the order can be “effectually challenged” only by immediate appeal, the general congressional policy against piecemeal review will preclude interlocutory appeal.
Id.
at 84,
Although intervenors seem to satisfy the first prong under Carson, because the district court’s order appears to have had the effect of denying injunctive relief, 17 they do not lose their ability fully to protect themselves if denied immediate appellate review. Notwithstanding intervenors’ assertion that the district court’s order “threatens permanently to deprive [intervenors] of any opportunity to litigate the excluded issues or ever obtain the broad injunctive relief they seek,” having been made full parties to the action, they can later appeal from the district court’s order upon the entry of a final order. And unlike the appellants in Carson, intervenors have not been irreparably harmed by being made to appeal at a later stage in the proceedings. Intervenors have not irretrievably lost an important tactical litigation advantage. Nor do they represent, for example, that unless immediate relief is obtained from Blue Shield’s compensation practices doctors will be forced to stop practicing medicine in Massachusetts or that others will be denied entry into the profession.
In an attempt to establish the kind of immediate, irreparable injury necessary for us to take jurisdiction of this appeal under section 1292(a)(1), the intervenors do raise one claim of injury that must be addressed. Because the Society has financed the instant litigation, both the Society and its members who supported the litigation may be bound by the rule of res judicata as though they were a party.
See General Foods Corp. v. Massachusetts Department of Public Health,
Although it is possible that intervenors’ additional claims will merge with *553 those raised by the original plaintiffs, that threat does not justify preliminary injunctive relief and, concomitantly, interlocutory appellate review. Having failed to convince the district court to allow them to inject their additional claims, intervenors are not precluded from appealing the adverse determination at the conclusion of this action. Thus, whether intervenors are entitled to raise additional claims for injunctive and class relief will be fully decided in this action. Intervenors should not be allowed to bootstrap a claim of “immediate, irreparable injury” by asserting that a rejection at this point in time of their additional claims in the instant action may prejudice their ability to go forward in Rodkey or any other action. 19
A recent decision of this court confirms that in the circumstances of this case intervenors cannot now allege irreparable injury adequate to support jurisdiction under section 1292(a)(1). In
Plymouth County Nuclear Information Committee, Inc. v. Boston Edison Co.,
Under the circumstances, we think plaintiffs are hard pressed to demonstrate that the instant order has any immediate consequences of a serious nature, or that they will suffer “irreparable harm” pending final disposition of the case in the district court. To be sure, the district court may have “finally” determined the “legal sufficiency” of plaintiffs’ claims for injunctive relief. Even so, its order has the “practical effect” only of denying permanent injunctive relief, and as such may be “effectually challenged” on appeal from final judgment.
Id.
at 18 (footnotes and citations omitted) (emphasis in original).
See also Shirey
v.
Bensalem Township,
The case at bar has a procedural history similar to Plymouth County in certain key respects. This is not the first time that the Society through its nominees has been in court advancing claims on behalf of Massachusetts physicians for injunctive relief against the defendants. Those efforts stretch back over a period of four years. Under the circumstances, intervenors, like the plaintiffs in Plymouth County, are hard pressed to demonstrate that the district court’s order has any immediate consequences of a serious nature, or that they will suffer irreparable harm pending final disposition of the case in the district court. 21
*554
A second, related basis exists for holding that plaintiffs are not entitled to immediate review notwithstanding that the effect of the district court’s order is to deny them injunctive relief. In
Gardner v. Westinghouse Broadcasting Co.,
an order denying an injunction on the merits and “one based on alleged abuse of a discretionary power over the scope of the action.”
“Where the order is of the former type, the danger of serious harm from the court’s erroneous belief in the existence of a legal barrier to its entertaining a claim for an injunction has been thought to outweigh the general undesirability of interlocutory appeals. The very fact that the second type of order hinges on the trial court’s discretion is itself an indication that such orders, relating primarily to convenience in litigation, carry a lesser threat of harm.”
Id.
at 481 n.7,
In the present case, the trial court’s order falls squarely within the category of discretionary orders which control the scope of the action and therefore do not justify interlocutory review.
22
The district court did not hold on the merits that injunctive relief was inappropriate; it simply held that intervenors could not inject injunctive claims into the action at this stage of the litigation.
Cf. Commodity Futures Trading Commission v. Preferred Capital Investment Co.,
III.
We therefore hold that the district court’s order is not appealable under either 28 U.S.C. § 1291 or 28 U.S.C. § 1292(a)(1) and dismiss the appeal for lack of jurisdiction.
So ordered.
Notes
. The plaintiffs also object (1) that Blue Cross helps perpetuate Blue Shield’s control over the compensation that can be earned by physicians by generally refusing to compensate physicians other than salaried health care providers on the staff of institutions, primarily hospitals, that enter into agreements with Blue Cross; (2) that Blue Shield directs its subscribers not to use nonparticipating physicians and its participating physicians not to refer patients to nonparticipating physicians; and (3) that Blue Cross directs its participating hospitals not to employ nonparticipating physicians.
. The first case,
Nelson v. Blue Shield of Mass., Inc.,
The second case, Hedberg v. Blue Cross of Mass., Inc., No. 77-3308 (D.Mass., filed November 1977), was brought by the Society and three member physicians as a class action on behalf of all participating physicians, alleged violations of §§ 1 and 2 of the Sherman Act and §§ 4 and 16 of the Clayton Act, and sought damages and injunctive relief. Plaintiffs attempted to amend their complaint in Hedberg approximately three months before filing the instant action to omit any claim for damages. The defendants opposed the amendment. No action was taken on the motion to amend and the action was dismissed on March 1, 1982, under Local Rule 22, without objection by either party, after no action was taken for two years. See infra note 8.
The fourth case, Rodkey v. Blue Shield of Mass., Inc., No. 82-317 (D.Mass., filed Feb. 5, 1982), was commenced by the intervenors in the instant action. The complaint in Rodkey consists of the proposed amended complaint proffered by intervenors in the case at bar.
. In an affidavit supporting the motion to intervene Stanley Wyman, M.D., president of the Society, makes the following representation.
Since the Society’s decision in May 1977 to challenge certain restrictive, inequitable physician reimbursement policies imposed by defendants Blue Shield ... and Blue Cross ... upon both participating and non-participating physicians in the Society’s membership, it has been my understanding and intention, and the understanding and intention of the Society and of its officers, that all Society members who have volunteered to act as named plaintiffs in actions instituted by the Society’s legal counsel would fully cooperate with the Society and act at all times in the interests of the Society, its member physicians and the physicians of the Commonwealth of Massachusetts.
The original plaintiffs apparently shared this view. The affidavit also quotes Dr. James Kartell, one of the original plaintiffs, as having made a statement before the Society’s Committee on Legislation to the same effect.
Warner & Stackpole, counsel for the original plaintiffs, take a contrary position.
Although the Medical Society paid most of the legal expenses incurred in the representation of the named plaintiffs in this case, we have always considered ourselves as having a normal attorney-client relationship, subject to all of the attendant obligations and responsibilities an attorney has to a client, with each of the plaintiffs....
We never viewed the plaintiffs as mere “nominees” subject to the control of the Medical Society, and the Society has never previously so suggested to us.
Affidavit of William J. Speers, Jr. (a member of Warner & Stackpole) at 3-4.
. Plaintiffs moved to certify questions, which motion was granted. The Supreme Judicial Court answered: (l)(a) that neither M.G.L. c. 176B § 7 nor any other statute or state policy requires Blue Shield to limit fees to participating physicians; (l)(b) that the statute does require Blue Shield to refuse to make payment for nonemergency services provided in-state by nonparticipating physicians; and (2) that Blue Cross is not permitted under the Massachusetts statutes to offer coverage for medical services covered by Blue Shield.
Kartell v. Blue Shield of Mass., Inc.,
1981 Mass.Adv.Sh.1980,
. Only three of the original four plaintiffs continue to be represented by their original counsel. The fourth, Hoffman, left the state and withdrew from the litigation.
. The acrimony over litigation strategy and what is best for the Society’s members is reflected in an affidavit of its president, Stanley Wyman, M.D.
Dr. James P. Kartell, the most actively involved of the named plaintiffs, has, in widely disseminated letters which I have read, denounced me and the Society’s officers for the termination of the Society’s attorney-client relationship with Warner & Stackpole and has advocated mass resignations of physicians from the Society.
. The parties disagree among themselves as to what claims and theories of liability are encompassed by the first amended complaint now before the district court. Defendants assert that plaintiffs narrowed their case to challenge only Blue Shield’s refusal to deal with nonparticipating physicians, a contention vigorously disputed by both original plaintiffs and intervenors. Original plaintiffs maintain that with the exception of the class-based and damage claims, the proposed complaint in intervention seeks relief virtually identical to that requested in the complaint now before the court, a contention that is rejected by the intervenors. We need not at this juncture decide whose characterization of the breadth of the claims is correct. We do note that the district court, in partially denying defendants’ motion for summary judgment, has implicitly rejected the defendants’ argument that the first amended complaint seeks injunctive relief only with respect to Blue Shield’s refusal to deal with nonparticipating physicians.
See Kartell v. Blue Shield of Mass., Inc.,
. The order provides:
Judge Garrity has recused himself in Hedberg and transferred this case to me. I observe that no action has been taken by any party for two years, and the case is subject to dismissal under Local Rule 22. Accordingly, the clerk is ordered to issue notice forthwith under Local Rule 22.
The intervenors’ motion is allowed in Kartell in part. The intervenors may intervene for the purpose of joining the present plaintiffs as parties plaintiff in the existing complaint. So much of their motion as seeks to introduce new claims by way of an intervenors’ complaint is denied. The clerk shall forthwith set this case down for a preliminary pre-trial conference.
. Rule 24(a):
Compare Weiser v. White,
Rule 24(b):
Compare Cameron v. President & Fellows of Harvard College,
. Significantly, the court reached this latter conclusion notwithstanding its practice of hearing appeals from all denials of motions to intervene of right.
. Intervenors attempt to distinguish Parklane Hosiery by treating the district court’s order in that case as a complete grant of intervention, a characterization that we do not accept. We also reject as both incorrect and irrelevant the representation made by counsel for intervenors at oral argument that Parklane Hosiery involved permissive intervention under Rule 24(b).
. That the individual intervenors have also intervened does not affect our conclusion that the district court’s order essentially allowed the Society entry into the lawsuit which it had financed. Intervenors dispute that the individual intervenors should be viewed simply as figureheads for the Society. In particular, intervenors assert that because the individual intervenors were not party to the action prior to the motion to intervene, and because they seek to represent classes of all physicians similarly situated, they should be viewed as new parties to whom the Society’s previous actions in this litigation should not be attributed.
It is evident, however, that the individual plaintiffs, both members of the Society, appear in this action solely because the Society has requested them to appear, and only because the original plaintiffs are no longer willing to follow the Society’s instructions. Moreover, their status as putative class representatives reflects the Society’s studied tactical decision to reinject class claims into the litigation at this stage. Indeed, were the individual plaintiffs not acting at the Society’s behest, they might not have been allowed to intervene.
. Intervenors attempt to overcome the force of the characterization of their complaint in intervention as the functional equivalent of an amended complaint by arguing that to the extent that it is accurate, it is applicable only to the Society, and not to the individuals who should be allowed at this juncture to raise any related claims. Regardless of whether the individual plaintiffs should be viewed only as additional stand-ins for the Society, see supra note 12, our reliance on Parklane Hosiery leads us to conclude that we do not have jurisdiction of the order even to the extent that it applies to the individual intervenors. For they, too, can appeal the district court’s order upon final decision of the district court.
. In general, appeal may be taken to this court only from “final decisions” of the district court. 28 U.S.C. § 1291 (1976). The policy against piecemeal appeals has been longstanding,
Baltimore Contractors, Inc. v. Bodinger,
. Intervenors’ reliance on
Spangler v. United States,
. In
Carson,
the district court had refused to approve a settlement and enter a proposed consent decree aimed at eliminating alleged racially discriminatory employment practices violative of Title VII of the Civil Rights Act of 1964, 42 U.S.C. § 2000e
et seq.
The Supreme Court reversed a decision of the court of appeals refusing to hear the appeal for lack of jurisdiction. The Court held that withholding entry of the consent decree had the effect of denying injunctive relief in a manner that risked irreparably harming the plaintiffs. It identified two potential sources of irreparable injury that supported appellate jurisdiction under 28 U.S.C. § 1292(a)(1). First, the plaintiffs risked losing their opportunity to settle the case, since avoidanee of a lengthy and costly trial was a factor in encouraging the defendant to settle.
. The scope of the injunctive relief sought by intervenors is disputed. See supra note 7. Without deciding the question, we accept for argument’s sake intervenors’ contention that they seek broader injunctive relief than do the original plaintiffs.
. In General Foods, this court held that a person who is not a party to an action but who expressly or impliedly, gives a party authority to represent him, for example by contributing towards litigation expenses, may be bound by the rule of res judicata as though he were a party."
. To the extent that intervenors also suggest that the presence of class-based claims independently supports our jurisdiction of the appeal, their suggestion must be rejected. The district court’s order does not become appealable because relief is now sought on behalf of a class.
Gardner v. Westinghouse Corp.,
. Plaintiffs brought suit in Massachusetts Superior Court, seeking to enjoin Boston Edison Co. from operating its Pilgrim Unit I Nuclear Power Station. Shortly after the Superior Court denied both a request by plaintiffs for preliminary injunctive relief and a motion to dismiss by defendant, the action was removed to the United States District Court. Plaintiffs failed to press their claim for preliminary injunctive relief in federal court for eighteen months, objecting only when the district court struck their prayer for injunctive relief from their complaint.
. Defendants argue that because intervenors failed to seek
preliminary
injunctive relief they are perforce barred from § 1292(a)(1) review. Although we conclude that interlocutory review is indeed unavailable, we cannot accept so rigid an approach. A party’s failure to seek preliminary injunctive relief is simply “a good indication that the status quo can continue until the ultimate conclusion of the litigation with
*554
out interlocutory appellate review.”
Shirey v. Bensalem Township, supra,
. Indeed, in
Plymouth County Nuclear Information Comm., Inc. v. Boston Edison Co., supra,
this court refused to take jurisdiction of the appeal even though in that case the district court had “ ‘finally’ determined the ‘legal sufficiency’ of plaintiffs’ claims for injunctive relief.”
