42 C.F.R. § 426.435 – Subpoenas.

(a) Purpose of a subpoena. A subpoena requires the attendance of an individual at a hearing and may also require a party to produce evidence authorized under § 426.440 at or before the hearing.
(b) Filing a motion for a subpoena. A party seeking a subpoena must file a written motion with the ALJ not less than 30 days before the date fixed for the hearing. The motion must do all of the following:
1. (1) Designate the witnesses.
2. (2) Specify any evidence to be produced.
3. (3) Describe the address and location with sufficient particularity to permit the witnesses to be found.
4. (4) State the pertinent facts that the party expects to establish by the witnesses or documents and whether other evidence may establish without the use of a subpoena.
(c) Response to a motion for a subpoena. Within 15 days after the written motion requesting issuance of a subpoena is served on all parties, any party may file an opposition to the motion or other response.
(d) Extension for good cause shown. The ALJ may modify the deadlines specified in paragraphs (b) and (c) of this section for good cause shown.
(e) Motion for a subpoena granted. If the ALJ grants a motion requesting issuance of a subpoena, the subpoena must do the following:
1. (1) Be issued in the name of the ALJ.
2. (2) Include the docket number and title of the LCD under review.
3. (3) Provide notice that the subpoena is issued according to sections 1872 and 205(d) and (e) of the Act.
4. (4) Specify the time and place at which the witness is to appear and any evidence the witness is to produce.
(f) Delivery of the subpoena. The party seeking the subpoena serves it by personal delivery to the individual named, or by certified mail return receipt requested, addressed to the individual at his or her last dwelling place or principal place of business.
(g) Motion to quash a subpoena. The individual to whom the subpoena is directed may file with the ALJ a motion to quash the subpoena within 10 days after service.
(h) Refusal to obey a subpoena. The exclusive remedy for contumacy by, or refusal to obey, a subpoena duly served upon any person is specified in section 205(e) of the Act (42 U.S.C. 405(e)) except that any reference to the “Commissioner of Social Security” shall be considered a reference to the “Secretary.”