45 C.F.R. § 1149.40
When may I file a motion to quash a subpoena?
A party, entity or the person to whom the subpoena is directed, may file with the ALJ a motion to quash the subpoena:
(a) Within 10 days after service; or
(b) On or before the time specified in the subpoena for compliance if it is less than 10 days after service.