Updated October 2026

Largest primary care groups in Massachusetts

Medical group directory
Massachusetts
Primary care

Groups: 677
Internal Medicine groups: 339
Nurse Practitioner groups: 200
Internal medicine specialists: 8,000
Nurse practitioner specialists: 498

There are 677 primary care groups in Massachusetts with a Medicare PAC ID: 339 internal medicine, 200 nurse practitioner, 105 family medicine, 27 physician assistant, 3 clinical nurse specialist and 3 general practice. Massachusetts General Physicians Organization (MGPO) is the largest internal medicine group, with 1,331 internal medicine specialists, and Walk-In MD Urgent Care the largest nurse practitioner group, with 15 nurse practitioner specialists.

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Massachusetts General Physicians Organization (MGPO) is the largest primary care group in Massachusetts, with 3,803 physicians

Ranked by physicians with a Massachusetts address linked to each group. Massachusetts General Hospital is second with 3,723, and Brigham and Women's Hospital third with 3,175. 56 Massachusetts groups have 100 or more physicians.

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Primary care groups in Massachusetts, ranked by physicians, 501 to 550
#	Medical group	Parent organization	Physicians	HCPs	Decision makers
501	Hatfield CardiologyHyannis · 1 site	-	1	2	Decision makers
502	Health Quality Primary CareLawrence · 1 site	-	1	2	Decision makers
503	Hyde Park Health AssociatesHyde Park · 1 site	-	1	2	Decision makers
504	iMedical365Avon · 1 site	-	1	2	Decision makers
505	Inner Balance Integrative MedicineWellesley · 1 site	-	1	2	Decision makers
506	Innovative Physiatry Services LLCMonson · 1 site	-	1	2	Decision makers
507	Jack Chang MD PCLowell · 1 site	-	1	2	Decision makers
508	Krishma Medical AssociatesConcord · 2 sites	Parent on file	1	2	Decision makers
509	Krishma Medical Associates 2 PCMedford · 2 sites	-	1	2	Decision makers
510	Latino Counseling CenterSpringfield · 2 sites	Parent on file	1	2	Decision makers
511	Leelhan, P.C.Lancaster · 2 sites	-	1	2	Decision makers
512	Longfellow Primary CareCambridge · 1 site	Parent on file	1	2	Decision makers
513	Lowell Family Medical CareLowell · 2 sites	-	1	2	Decision makers
514	LUX InfusionHaverhill · 1 site	Parent on file	1	2	Decision makers
515	Manish Tandon MDCambridge · 1 site	-	1	2	Decision makers
516	Montilla Plastic SurgeryWorcester · 2 sites	-	1	2	Decision makers
517	Naseer PCShrewsbury · 1 site	-	1	2	Decision makers
518	New Boston Village Primary CareFall River · 1 site	-	1	2	Decision makers
519	North Harbor HealthcareWoburn · 1 site	-	1	2	Decision makers
520	Northeast Medical GroupLowell · 1 site	Parent on file	1	2	Decision makers
521	Oceanside Health, PLLCHarwich · 1 site	-	1	2	Decision makers
522	Olive Tree MedicalWellesley · 1 site	-	1	2	Decision makers
523	Personalized Preventive MedicineMilton · 1 site	-	1	2	Decision makers
524	Pioneer Valley Hospice & Palliative CareGreenfield · 1 site	Parent on file	1	2	Decision makers
525	Polaris Family MedicineFranklin · 1 site	-	1	2	Decision makers
526	Pondville Cardiology AssociatesNorfolk · 1 site	-	1	2	Decision makers
527	Principes Medical GroupWest Bridgewater · 1 site	Parent on file	1	2	Decision makers
528	Quality Medical & Physical TherapySpringfield · 1 site	-	1	2	Decision makers
529	Radiant Minds LLCLowell · 1 site	-	1	2	Decision makers
530	Resil Medical AssociatesDorchester · 3 sites	-	1	2	Decision makers
531	Smart Lifestyles MDBrighton · 1 site	-	1	2	Decision makers
532	Southcoast CardiologyNew Bedford · 1 site	Parent on file	1	2	Decision makers
533	Stephen L Payne MDWilliamstown · 1 site	-	1	2	Decision makers
534	Stony Brook Primary CareNorth Chelmsford · 1 site	-	1	2	Decision makers
535	Synergy MedicinesBeverly · 1 site	-	1	2	Decision makers
536	Tuesday HealthSomerville · 1 site	-	1	2	Decision makers
537	Vallen Allergy & AsthmaQuincy · 1 site	-	1	2	Decision makers
538	Worcester Pain ManagementWorcester · 1 site	-	1	2	Decision makers
539	Xpress Med Urgent CareSpringfield · 1 site	Parent on file	1	2	Decision makers
540	Deo Medical CardiologyBoston · 1 site	-	1	1	Decision makers
541	Hanover HospiceFall River · 1 site	Parent on file	1	1	Decision makers
542	Medical Express Urgent Care CenterSpringfield · 1 site	Parent on file	1	1	Decision makers
543	New England Post-Acute Medical GroupHolliston · 1 site	-	1	1	Decision makers
544	OnduoNewton · 1 site	-	1	1	Decision makers
545	Ram Clinic PCNorwood · 1 site	-	1	1	Decision makers
546	UH Partners (UHP)Worcester · 3 sites	Parent on file	-	37	Decision makers
547	Starting Line WellnessHopkinton · 1 site	-	-	11	Decision makers
548	Boston Psychiatric CareNewton · 1 site	-	-	9	Decision makers
549	Lighthouse Mental WellnessPembroke · 1 site	-	-	8	Decision makers
550	Brighter Side WellnessNew Bedford · 3 sites	-	-	7	Decision makers

Showing 501 to 550 of 677 primary care groups in Massachusetts

Sources: Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Affiliation Data

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