Starting January 1st of 2020, the new Medicare ID must be used for eligibility verification and billing regardless of the date of service. If your patients do not bring their Medicare cards with them:
• For the New York State patients with Medicaid, the ePACES Medicaid web portal also can be used.
The new Medicare ID format
The new Medicare ID contains 11 characters with numbers 0-9 and all uppercase letters except for S, L, O, I, B, and Z.