Updated October 2026

Medical groups in Worcester, MA

Medical group directory
Worcester, Massachusetts

Medical groups: 72
Multi-specialty: 15
Single-specialty: 57
More than one site: 45
100+ physicians: 3

There are 72 medical groups in Worcester with a Medicare PAC ID. UMass Memorial Medical Group is the largest, with 1,850 Massachusetts physicians, followed by UMass Memorial Radiology Physicians Service Fund with 132. 65% of Worcester groups are independent.

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UMass Memorial Medical Group is the largest medical group in Worcester, with 1,850 physicians

Ranked by physicians with a Massachusetts address linked to each group based in Worcester. UMass Memorial Radiology Physicians Service Fund is second with 132, and Saint Vincent Medical Group third with 122. 3 Worcester groups have 100 or more physicians.

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Medical groups in Worcester, ranked by physicians
#	Medical group	Parent organization	Physicians	HCPs	Decision makers
1	UMass Memorial Medical GroupWorcester · 166 sites	Parent on file	1,850	3,037	Decision makers
2	UMass Memorial Radiology Physicians Service FundWorcester · 22 sites	Parent on file	132	143	Decision makers
3	Saint Vincent Medical GroupWorcester · 24 sites	Parent on file	122	214	Decision makers
4	Emergency Physician Associates of Massachusetts PCWorcester · 14 sites	Parent on file	54	93	Decision makers
5	Family Health Center of WorcesterWorcester · 8 sites	Parent on file	41	124	Decision makers
6	Edward M. Kennedy Community Health CenterWorcester · 10 sites	Parent on file	39	134	Decision makers
7	Community HealthlinkWorcester · 13 sites	Parent on file	24	92	Decision makers
8	Shields MRI at UMass Memorial, Shrewsbury StreetWorcester · 6 sites	Parent on file	23	23	Decision makers
9	Saint Vincent Radiological Associates, Inc.Worcester · 5 sites	-	22	23	Decision makers
10	Retina Consultants of WorcesterWorcester · 2 sites	-	11	11	Decision makers
11	Spectrum Health Systems, Inc.Worcester · 15 sites	Parent on file	10	67	Decision makers
12	Lianne Inc. Medical GroupWorcester · 4 sites	-	10	29	Decision makers
13	New England HospitalistsWorcester · 5 sites	-	8	30	Decision makers
14	YOU, Inc.Worcester · 6 sites	Parent on file	7	49	Decision makers
15	Worcester Ophthalmology AssociatesWorcester · 1 site	-	7	8	Decision makers
16	Worcester Internal MedicineWorcester · 2 sites	-	6	27	Decision makers
17	Associates in Otolaryngology Head and Neck SurgeryWorcester · 3 sites	-	6	11	Decision makers
18	AFC Urgent Care WorcesterWorcester · 3 sites	Parent on file	5	26	Decision makers
19	Hospital for Behavioral MedicineWorcester · 3 sites	Parent on file	5	26	Decision makers
20	Open Sky Community ServicesWorcester · 3 sites	Parent on file	5	24	Decision makers
21	Integral Health PartnersWorcester · 2 sites	-	5	16	Decision makers
22	Vitreo-Retinal Associates, PCWorcester · 2 sites	-	5	5	Decision makers
23	Advanced Psych ServicesWorcester · 3 sites	-	4	21	Decision makers
24	Central Mass NephrologyWorcester · 2 sites	-	4	4	Decision makers
25	Neary & Hunter GynWorcester · 1 site	-	4	4	Decision makers
26	UMass Memorial Medical GroupWorcester · 8 sites	Parent on file	3	84	Decision makers
27	Central Mass Medical GroupWorcester · 2 sites	-	3	4	Decision makers
28	Worcester County OrthopedicsWorcester · 1 site	-	3	4	Decision makers
29	Worcester Urological AssociatesWorcester · 1 site	-	3	4	Decision makers
30	New England Gastroenterology AssociatesWorcester · 2 sites	-	3	3	Decision makers
31	Primary Physician PartnersWorcester · 1 site	-	3	3	Decision makers
32	Primary Physician PartnersWorcester · 1 site	-	3	3	Decision makers
33	Behavioral Healthcare ServicesWorcester · 1 site	-	2	32	Decision makers
34	Newton Square Counseling CollaborativeWorcester · 1 site	-	2	7	Decision makers
35	NEH Healthcare LLCWorcester · 1 site	-	2	6	Decision makers
36	Medical Surgical Eye InstituteWorcester · 1 site	-	2	5	Decision makers
37	Worcester RISE for HealthWorcester · 1 site	-	2	4	Decision makers
38	Horizon Treatment CenterWorcester · 1 site	Parent on file	2	3	Decision makers
39	Novella InfusionWorcester · 21 sites	Parent on file	1	29	Decision makers
40	Eye and Vision Center at MCPHSWorcester · 3 sites	Parent on file	1	26	Decision makers
41	Worcester Dermatology AssociatesWorcester · 3 sites	-	1	6	Decision makers
42	Worcester Physicians and Nurses ServicesWorcester · 2 sites	Parent on file	1	4	Decision makers
43	Le & Chang Family Urgent CareWorcester · 1 site	-	1	3	Decision makers
44	Omni Wound PhysiciansWorcester · 3 sites	Parent on file	1	3	Decision makers
45	Vernon Integrative Medical GroupWorcester · 2 sites	-	1	3	Decision makers
46	Eleanor HealthWorcester · 2 sites	Parent on file	1	2	Decision makers
47	Grace MedicalWorcester · 1 site	-	1	2	Decision makers
48	Montilla Plastic SurgeryWorcester · 2 sites	-	1	2	Decision makers
49	Worcester Pain ManagementWorcester · 1 site	-	1	2	Decision makers
50	The Dermatology Center of WorcesterWorcester · 1 site	Parent on file	1	1	Decision makers

Showing 1 to 10 of 72 medical groups in Worcester

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

UMass Memorial Health Care has the most physicians in Worcester medical groups, with 1,863 across 4 groups

Dmand AI maps every Worcester medical group to its parent organization, up to the health system or platform at the top. 1 parent organizations have two or more Worcester medical groups. Each clinician counts once per parent organization.

Parent organizations with the most Worcester medical groups
#	Parent organization	Worcester groups	Physicians	HCPs
1	UMass Memorial Health CareHealth system	4	1,863	3,153

Parent organizations with two or more Worcester groups

UMass Memorial Health CareHealth system · 4 Worcester medical groups
UMass Memorial Medical GroupMulti-specialty group · 166 sites
UMass Memorial Radiology Physicians Service FundMedical group · 22 sites
2 more Worcester groups and their practice sites

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Source: Dmand AI Org Hierarchy Data

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Dmand AI maps the owners, administrators and physician leaders at each of the 72 Worcester medical groups, with the parent organization above each one, and finds validated work emails and mobile numbers.

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65% of Worcester medical groups are independent, with no larger parent organization

A group counts as independent when no health system, platform or other organization sits above it in the org hierarchy. Every other group belongs to a larger organization.

Worcester medical groups by ownership

Independent4765%
Health system or hospital68%
Platform or corporate owner811%
Community or government68%
Other organization57%

Source: Dmand AI Org Hierarchy Data

23 Worcester medical groups practice at a hospital site

Beyond their own offices, groups practice at the sites of care linked to them in the org hierarchy. A group can practice at several kinds of site, so the shares overlap.

Worcester medical groups by site of care

Hospitals2332%
Behavioral health facilities68%
FQHCs46%
Ambulatory surgery centers11%
Skilled nursing facilities11%
Hospices11%

Sources: Dmand AI Practice Data and Dmand AI Org Hierarchy Data

Primary care groups are the most common medical groups in Worcester, with 31

Each group is counted once, under its main specialty. Behavioral and mental health groups are second, with 15, and 15 Worcester groups are multi-specialty.

Source: Dmand AI Professional Profile Data

4,237 Massachusetts HCPs work in Worcester medical groups, 2,230 of them physicians

Each clinician is counted once, across every Worcester group they are linked to. Only clinicians with a Massachusetts address are counted.

HCPs in Worcester medical groups by type

Physicians (MD, DO)2,23053%
Nurses and nurse practitioners1,01124%
Physician assistants47611%
Behavioral health clinicians3568%
Optometrists and opticians461%
Other HCPs1183%

Source: Dmand AI Affiliation Data

Each Worcester medical group profile shows the parent, sites, clinicians and identifiers

Clinicians and specialtiesA count by specialty and a sample of the group's cliniciansOn every profile
Practice locationsMain site and a sample of practice locations, with a count of the restOn every profile
Medicare Part B paymentsMedicare payments to the group, from CMSOn every profile
Group NPI and Medicare PAC IDIdentifiers for matching records across sourcesOn every profile
Parent organizationThe health system, platform or owner above the groupOn every profile
Every clinician and siteThe full roster and every practice locationWith a free account
Leader and clinician contactsWork emails and mobile numbers, found on request and then validatedWith a free account
EHR used by the group's cliniciansThe EHR in use at the group's sitesWith a free account

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Sources: Doctors and Clinicians National Downloadable File (CMS), Medicare Physician & Other Practitioners (CMS) and Dmand AI Org Hierarchy Data

Sources for the Worcester medical group directory

Sources for the data on this page
Data on this page	Source
Medical groups, specialties and sites	Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Professional Profile Data
Parent organizations and independence	Dmand AI Org Hierarchy Data
Physicians and HCPs	Dmand AI Affiliation Data
Group NPI and PAC ID	NPPES NPI Registry (CMS) and Doctors and Clinicians National Downloadable File (CMS)

Data last refreshed October 2026Report an inaccuracy Remove my information

The directory lists groups based in Worcester with a Medicare PAC ID.

FAQ

Frequently asked questions about medical groups in Worcester

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

How many medical groups are in Worcester?

There are 72 medical groups based in Worcester with a Medicare PAC ID: 15 multi-specialty and 57 single-specialty. 45 of them have more than one site.

What is the largest medical group in Worcester?

UMass Memorial Medical Group, with 1,850 physicians and 3,037 HCPs with a Massachusetts address. UMass Memorial Radiology Physicians Service Fund is second with 132, and Saint Vincent Medical Group is third with 122.

How many Worcester medical groups are independent?

47, or 65%, have no larger parent organization in the Dmand AI org hierarchy. 6 belong to a health system or hospital and 8 to a physician platform or corporate owner.

How many Worcester medical groups practice at a hospital?

23 Worcester groups practice at a hospital site linked to them in the Dmand AI org hierarchy.

How do I find a medical group's NPI or PAC ID?

Each medical group profile lists the group NPI and Medicare PAC ID at the top, with the main address and phone number. The NPI comes from the NPPES NPI Registry and the PAC ID from CMS Medicare enrollment.

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