This is an appeal from a judgment of the United States District Court for the Eastern District of New York (Charles P. Sifton, Judge) entered upon an order dismissing, with leave to amend, a Sherman Act complaint for failure to allege adequately the required connection to interstate commerce. Though we do not agree with all of the *924 District Court’s analysis of the relevant standards for assessing the sufficiency of an allegation of interstate commerce effects, we agree that the complaint, in its present form, was properly dismissed.
I.
The following facts were alleged in the complaint and subsequently filed affidavits. Plaintiff-appellant Monica Furlong is a licensed physician and surgeon and a National Board certified anesthesiologist. Dr. Furlong began work at the Long Island College Hospital (LICH) in 1968. In 1974, Dr. Stewart Owre, chief of the Department of Anesthesiology at LICH, appointed Dr. Furlong to the position of Assistant Director of Anesthesiology. By 1977, appellant had become a fully privileged staff member of LICH with senior privileges in anesthesiology.
In May 1978, Dr. Owre established a professional corporation, Long Island Anesthesiology Associates (LIAA). Although the other anesthesiologists associated with LICH joined LIAA, Dr. Furlong was not asked to become a member. On May 10, 1978, LIAA executed a contract with LICH, which granted LIAA the exclusive right to provide anesthesiological services to LICH, and which obliged LIAA to provide such services on a 24-hour, seven-days-per-week basis.
Notwithstanding the exclusivity provision of its contract with LIAA, LICH did not dismiss Dr. Furlong from her staff position. Dr. Owre, however, deprived Dr. Furlong of certain economic benefits that she had consistently received prior to the formation of LIAA. In addition, Dr. Owre removed Dr. Furlong from her position as Assistant Director of Anesthesiology and sought to prevent her assignment to surgical cases.
On April 15, 1979, Dr. Furlong requested and received a leave of absence from LICH. Some time during her leave, Dr. Furlong found alternative employment as an anesthesiologist. On August 14, 1981, Dr. Furlong instituted this action, alleging, among other things, that LICH, LIAA, and Dr. Owre acted together to restrain trade and fix prices in violation of section 1 of the Sherman Act, 15 U.S.C. § 1 (1976).
To establish that her claim was cognizable under federal antitrust law, Dr. Furlong alleged several connections between the parties’ business activities and interstate commerce. The connections specified were Dr. Furlong’s receipt of third-party payments from out-of-state, LIAA’s receipt of such payments, LIAA’s practice of purchasing goods and services in interstate commerce, and LICH’s receipt of federal subsidies. It was not alleged that any of these connections to interstate commerce were or would be affected by the claimed antitrust violation.
Defendants filed motions to dismiss the complaint, pursuant to Fed.R.Civ.P. 12(b) (6), for failure to allege adequately the effect on interstate commerce required to permit application of the Sherman Act. In the supporting affidavits, defendants asserted that neither the amount of out-of-state payments received nor the amount of goods and services purchased had been or would be altered by their alleged conduct.
On June 16, 1982, the District Court filed a memorandum opinion and order dismissing the claim.
1
In its opinion, the Court held that “ ‘[a]s a matter of logic,’ the extent of defendants’ activities in interstate commerce, in and of itself, ‘is irrelevant in a denial of hospital staff privileges ... [since] their denial of staff privileges to [plaintiff] has no possible effect on their own activities in interstate commerce; the only potential effect relates to plaintiff[’s] practice of medicine,’ ” quoting
Cardio-Medical Associates, Ltd. v. Crozer-Chester Medical Center,
II.
The interstate commerce component of an antitrust cause of action may be established in two ways. First, plaintiff may allege and prove that defendant’s conduct is “within” the stream of interstate commerce.
Goldfarb v. Virginia State Bar,
The first dispute requires consideration of the Supreme Court’s decision in
McLain v. Real Estate Board,
We agree with the First and Tenth Circuits that it would not be prudent to extract from
McLain
a generalized rule that antitrust jurisdiction can be established simply by showing that some aspects of a defendant’s business have a relationship to interstate commerce. Rather the inquiry must be whether the defendant’s activity that has allegedly been “infected” by unlawful conduct can be shown “ ‘as a matter of practical economics’ to have a not insubstantial effect on the interstate commerce involved.”
McLain, supra,
The second substantive issue is whether in a case like the pending one the requisite relationship with commerce may be based on the activities of both plaintiff and defendants, or only, as the District Court ruled, on those of the plaintiff. On this issue, we think the District Court too readily put aside any consideration of the defendants’ activities. 4 Judge Sifton adopted the view, expressed in Cardio-Medical Associates, supra, that in a case involving a hospital’s denial of staff privileges, the alleged violation can never affect the hospital’s receipt of goods and services. However, this view ignores the rationale behind the Sherman Act’s condemnation of such anti-competitive schemes as price-fixing and group boycotting. Such schemes are prohibited because they permit those who perpetrate them to constrict supply, raise prices, and lower output. If output decreases, a defendant’s demand for the goods and services it uses will also decrease. Thus, as a matter of substantive antitrust law, there is no defect in a complaint that alleges that a denial of staff privileges, undertaken in furtherance of a price-fixing or group boycotting scheme, may ultimately affect certain of the activities that connect a hospital to interstate commerce.
With these substantive principles in mind, we now consider whether the complaint adequately alleged the requisite jurisdictional element of an antitrust claim. We are mindful of McLain’s caution that the plaintiffs there were not required to make a “particularized showing” of an effect on interstate commerce in order to *927 survive a motion to dismiss, but we also must assume that the Court was willing to accept a somewhat general allegation because the causal connection to identified lines of commerce from activities subject to restriction by reason of price-fixing was so readily inferable. That is not the situation with Dr. Furlong’s complaint. Though her complaint mentions “price-fixing” in a caption to her antitrust cause of action, she has not alleged the classic agreement between competitors that concerned the Court in McLain. There is no claim that competing hospitals or associations of anesthesiologists have conspired to fix the prices for their services. In fact, there is no allegation of price-fixing in any of the operative language of the complaint. Though we do not doubt that a price-fixing conspiracy or a group boycotting scheme can be shown “as a matter of practical economics” to have an adverse effect on the perpetrator’s interstate activities, this complaint fails to set forth any facts from which it is inferable that the defendants’ activities, infected with the particular illegality alleged, are likely to have a substantial effect on commerce. That omission is not surprising, since it is not easy to imagine how the exclusion of Dr. Furlong from LIAA and the various harassments alleged to have prompted her withdrawal from the LICH medical staff might be shown to have a predictable tendency to restrict the defendants’ purchase of supplies from out of state. Though we do not agree with Judge Sifton that defendants’ activities are irrelevant as a matter of logic, we do agree that the complaint in its present form fails to set forth facts from which the jurisdictional element, based on defendants’ activities, is inferable.
Whether the jurisdictional element was adequately pleaded with respect to plaintiff’s own activities is a closer question. Plaintiff alleged that as a result of defendants’ conduct she lost $120,000 of income and that she derives a “substantial portion” of her income from third-party payments by out-of-state insurers.
5
In
Rex Hospital
the Supreme Court included an antitrust plaintiff’s loss of revenue from out-of-state insurers among a “combination of factors” that sufficed as an adequate pleading of a substantial effect on commerce where the revenue loss, plus diminished out-of-state purchases, totaled “thousands and perhaps hundreds of thousands of dollars.”
We are mindful of the generous approach to pleading outlined in
Conley v. Gibson,
Though we are not prepared to say that a diminution of a doctor’s out-of-state payments cannot satisfy the jurisdictional element of an antitrust claim, we think Dr. Furlong should be more specific as to the jurisdictional facts of her claim before a district court can be asked to rule whether her claim involves a not insubstantial effect on commerce.
For these reasons, the judgment dismissing the complaint without prejudice is affirmed.
Notes
. The District Court assessed only the sufficiency of the complaint and did not render an adverse summary judgment, even though the submission of affidavits might have permitted the defendants’ motion to dismiss to be treated as a motion for summary judgment. See Fed. R.Civ.P. 12(c). This testing of the complaint alone, a course that inured to the plaintiff’s advantage, since the dismissal was with leave to amend, was proper.
. The District Court also concluded that, if the complaint was endeavoring to allege jurisdiction based on the interstate movement of plaintiffs patients, this basis was legally insufficient. On appeal, plaintiff does not claim that her complaint should be understood as making such an allegation, and we therefore do not consider it.
. Though
Western Waste
announced a broad rule focusing on defendant’s activities “independent of the violation,”
. It is possible that Judge Sifton was rejecting consideration of defendants’ activities not as a matter of substantive law, but only as a matter of procedure for lack of an adequate pleading; if the latter is the case, we are in agreement with him, as our subsequent discussion will reveal.
. In her brief Dr. Furlong alleges that she is prepared to prove that defendants’ conduct affected interstate commerce by diminishing her purchase of out-of-state equipment and supplies. However, the complaint contains no allegation to this effect, much less an adequate claim of an amount of diminished out-of-state purchases that could be evaluated by the District Court against the standard of a “not insubstantial” effect on commerce. Plaintiffs opportunity to amend her complaint will enable her to plead such an allegation if it can be made in good faith.
