For Meridian, information regarding the Payor ID changes that took effect on 1/1/21 is located on the Meridian website under Provider Resources/ Bills and Payments.
For Claims - Professional and Facility call:
Availity Customer Support: 800-282-4548
Please check the member ID card for the changes which took effect on January 1, 2021
Please see the attachment for a printable handout for your office of these numbers and details.