2020 New York Laws
CPL - Criminal Procedure
Part 3 - Special Proceedings and Miscellaneous Procedures
Title R - Procedures for Securing Attendance of Witnesses in Criminal Actions
Article 650 - Securing Attendance as Witnesses of Prisoners Confined in Institutions of Other Jurisdictions of the United States-Rendition to Other Jur
650.10 - Securing Attendance of Prisoner in This State as Witness in Proceeding Without the State.

§  650.10  Securing  attendance  of prisoner in this state as witness in
           proceeding without the state.
If a judge of a court of record in any other state, which by its  laws
  has made provision for commanding a prisoner within that state to attend
  and  testify  in this state, certifies under the seal of that court that
  there is a criminal prosecution pending in such court or  that  a  grand
  jury  investigation  has  commenced, and that a person confined in a New
  York state correctional institution or prison within the  department  of
  corrections  and  community supervision, other than a person confined as
  criminally mentally ill, or as a defective delinquent,  or  confined  in
  the  death  house  awaiting  execution,  is  a  material witness in such
  prosecution or investigation and that his or her  presence  is  required
  for  a specified number of days, upon presentment of such certificate to
  a judge of a superior court in the county where the person is  confined,
  upon  notice  to  the attorney general, such judge, shall fix a time and
  place for a hearing and shall make  an  order  directed  to  the  person
  having  custody of the prisoner requiring that such prisoner be produced
  at the hearing.
If at such hearing  the  judge  determines  that  the  prisoner  is  a
  material  and necessary witness in the requesting state, the judge shall
  issue an order directing that the prisoner attend in the court where the
  prosecution or investigation is pending, upon such terms and  conditions
  as the judge prescribes, including among other things, provision for the
  return of the prisoner at the conclusion of his or her testimony, proper
  safeguards  on his or her custody, and proper financial reimbursement or
  other payment by the demanding jurisdiction for all expenses incurred in
  the production and return of the prisoner.
The attorney general is authorized as agent for the state of New York,
  when in his or  her  judgment  it  is  necessary,  to  enter  into  such
  agreements   with   the   appropriate   authorities   of  the  demanding
  jurisdiction  as  he  or  she  determines  necessary  to  ensure  proper
  compliance with the order of the court.