Here's from this page on NY's board website
that talks about verifying your CA license (kinda like endorsement).
Nurses Licensed in Another State But they also
If you are licensed as a nurse in another state, you must provide the New York State Education Department with verification of that licensure. The National Council of State Boards of Nursing (NCSBN) handles verification of licensure for a majority of states through their Nurse System (Nursys). You can check to see if the state(s) where you are licensed as a nurse participates in Nursys by visiting their Web site at www.nursys.com or by calling them at 1-866-819-1700. If the state(s) where you are licensed as a nurse participates in Nursys, you must request verification of your licensure from Nursys, not the state(s). If your state(s) of licensure does (do) not appear on the Nursys list, you must use the Verification of Other Professional Licensure/Certification form (Form 3) to verify your licensure to New York State. Please note, if you hold any other professional licenses in states other than New York, you must also use Form 3 to verify that licensure to New York State.
said of you were educated outside of USA, you have to go through the CGFNS process. See this link from their boards: NYS Nursing:Application Forms RN & LPN
If your education was obtained in another country, do not use Form 2. You must have your educational credentials verified by CGFNS, an independent credentials verification organization, before the New York State Education Department can determine if your credentials meet New York State's requirements for licensure. See "Verifying Education Credentials From Non-U.S. Programs". Contact CGFNS for the forms and procedures for the independent verification of your education credentials (see contact information).
Maybe just call them to verify? I'm not sure.