Massachusetts Health Care
Delivery System Map

Provider Networks and Major Medical Groups

Within major medical groups, 84% of Massachusetts’ primary care providers are in the state’s 8 largest provider networks and 5 largest medical groups

Note: Data on provider networks and medical groups is derived from Massachusetts Health Quality Partners’ Massachusetts Provider Database. Approximately three quarters of all primary care providers in Massachusetts are associated with a major medical group. The remaining providers are either in very small practices or are licensed but not practicing. For additional information about the data used in this tool, please visit the about this site section.