Become part of the nearly 14,000 healthcare providers that form the
extensive network
of MCS providing excellent healthcare to our members and commercial policyholders. By joining MCS, you will be
joining the leading plan in the healthcare industry in Puerto Rico.
MCS proudly serves over 284,000 members through its Medicare Advantage, Inc. subsidiary and approximately
264,000 commercial policyholders in Puerto Rico through its MCS Life Insurance Company subsidiary.
In July 2024, MCS Advantage obtained the accreditation of the Accreditation Association for Ambulatory Health
Care (AAAHC) for the second consecutive time.
For 2025, the Centers for Medicare and Medicaid Services (CMS) awarded the 5-Star rating nationally to only 9
health plans out of 521. MCS Classicare, MCS’ Medicare Advantage plan, was the largest 5-star plan awarded in
the United States.
For details on the credentialing and contracting process for any of MCS's lines of business, please contact our
Credentialing Unit Monday through Friday from 8:00 a.m. to 4:30 p.m. by calling 787.758.2500, ext. 2151, or by
writing to the following email address: credentialingdocs@medicalcardsystem.com
