These are subpoenas for physical objects. In the context of personal injury 
litigation,  they typically request the production of medical records, calendars, 
office diaries, X  rays, and any other physical record that concerns the medical 
care of a specified  person. Subpoenas for any relevant records are usually sent 
to persons who are  scheduled to give depositions. The records are usually 
those of the plaintiff, but an  attorney may issue a subpoena for the records of 
any person whose medical  condition is at issue in the lawsuit. In some 
situations, such as toxic exposure  litigation, the records of many patients may 
be subpoenaed. The attorney is not  allowed to keep the subpoenaed records 
but may inspect them and make copies.
Attorneys usually do not issue a subpoena for records without first attempting 
to  obtain them through informal means. Since subpoenas may be issued 
without the  approval of the court, medical care practitioners should ensure that 
they are valid  before releasing records by calling the issuing attorney and 
determining the  circumstances of the case. In most states now, a subpoena for 
medical records  should include a signed release by the patient. If the attorney 
is requesting records  for persons other than his or her client, the physician may 
want to ask his or her own  attorney to investigate the validity of the request. 
In cases that involve records with  special legal protection (such as patients in a 
substance abuse treatment program)  it may be necessary to request that the 
court deny (quash) the subpoena or restrict  access to the records. The court 
may order that all patient identifiers be removed, or  that the records be given 
to the judge, rather than the requesting attorney.