N.Y. CVP Law § 3121

§ 3121. Physical or mental examination. (a) Notice of examination.\nAfter commencement of an action in which the mental or physical\ncondition or the blood relationship of a party, or of an agent, employee\nor person in the custody or under the legal control of a party, is in\ncontroversy, any party may serve notice on another party to submit to a\nphysical, mental or blood examination by a designated physician, or to\nproduce for such examination his agent, employee or the person in his\ncustody or under his legal control. The notice may require duly executed\nand acknowledged written authorizations permitting all parties to\nobtain, and make copies of, the records of specified hospitals relating\nto such mental or physical condition or blood relationship; where a\nparty obtains a copy of a hospital record as a result of the\nauthorization of another party, he shall deliver a duplicate of the copy\nto such party. A copy of the notice shall be served on the person to be\nexamined. It shall specify the time, which shall be not less than twenty\ndays after service of the notice, and the conditions and scope of the\nexamination.\n (b) Copy of report. A copy of a detailed written report of the\nexamining physician setting out his findings and conclusions shall be\ndelivered by the party seeking the examination to any party requesting\nto exchange therefor a copy of each report in his control of an\nexamination made with respect to the mental or physical condition in\ncontroversy.\n