MMM Healthcare, LLC is an HMO plan with a Medicare contract. Enrollment in MMM depends on contract renewal. To enroll, you must have Medicare Parts A and B, have not been diagnosed with End Stage Renal Disease (ESRD) and reside within the 78 municipalities of the Island. The benefit information provided is a brief summary, not a complete description of benefits. For more information contact the plan. Limitations, copayments, and restrictions may apply. Benefits, formulary, pharmacy network, provider network, premium and/or co-payments/co-insurance may change on January 1 of each year. You must continue to pay your Medicare Part B premium. This information is available for free in other languages. Please call our customer service number at 787-620-2397 (Metro Area), 1-866-333-5470 (toll free), or 1-866-333-5469 TTY (hearing impaired), from Monday through Sunday from 8:00 a.m. to 8:00 p.m. Por favor, llame a nuestro número de servicio al cliente al 787-620-2397 (Área Metro), 1-866-333-5470 (libre de cargos) o 1-866-333-5469 TTY (audioimpedidos), de lunes a domingo de 8:00 a.m. a 8:00 p.m. Medicare evaluates plans based on a 5-Star rating system. Star Ratings are calculated each year and may change from one year to the next.