Children's Medical Security Plan


The Children's Medical Security Plan (CMSP) is a basic health insurance program offered by the Executive Office of Health and Human Services for Massachusetts children and teens under the age of 19 years. CMSP is run by MassHealth.
Contact Information
MassHealth Customer Service Center
Central Processing Unit
P.O. Box 290794
Charlestown, MA 02129-0214
1-(888) 665-9997 (phone)
How to Apply:
Select one of the links below to download the application or go to the program site for more information on how to apply. Once you fill out your application, send it to the address on the application. Do NOT send it to RxResource.
To be eligible for the Children's Medical Security Plan (CMSP), a child must be under 19 years of age and a resident of Massachusetts. The child must be uninsured for basic medical and dental care and not eligible for these services through MassHealth. Eligibility does NOT depend on income or immigration status.