Medical groups in Cambridge, MA
- Medical groups
- 35
- Multi-specialty
- 8
- Single-specialty
- 27
- More than one site
- 19
- 100+ physicians
- 3
There are 35 medical groups in Cambridge with a Medicare PAC ID. Cambridge Health Alliance is the largest, with 636 Massachusetts physicians, followed by Mount Auburn Professional Services with 300. 63% of Cambridge groups are independent.
Find the decision makers at all 35 Cambridge medical groups
Work emails and mobile numbers for practice owners, administrators and physician leaders, found through healthcare waterfall enrichment, with a free Dmand AI account.
Cambridge Health Alliance is the largest medical group in Cambridge, with 636 physicians
Ranked by physicians with a Massachusetts address linked to each group based in Cambridge. Mount Auburn Professional Services is second with 300, and Beth Israel Lahey Health third with 280. 3 Cambridge groups have 100 or more physicians.
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Sort and filter all 35 Cambridge medical groups by specialty, parent organization, group size, EHR in use and decision makers in Dmand AI.
Showing 1 to 10 of 35 medical groups in Cambridge
Sources: Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Affiliation Data
Beth Israel Lahey Health has the most physicians in Cambridge medical groups, with 613 across 6 groups
Dmand AI maps every Cambridge medical group to its parent organization, up to the health system or platform at the top. 1 parent organizations have two or more Cambridge medical groups. Each clinician counts once per parent organization.
See every medical group, site and clinician under Beth Israel Lahey Health
Org Hierarchy Explorer maps every group, site of care and clinician under the parent, with the leaders at each group.
Source: Dmand AI Org Hierarchy Data
For sales teams
Dmand AI maps the owners, administrators and physician leaders at each of the 35 Cambridge medical groups, with the parent organization above each one, and finds validated work emails and mobile numbers.
63% of Cambridge 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.
Cambridge medical groups by ownership
- Independent22
- Health system or hospital9
- Platform or corporate owner4
Source: Dmand AI Org Hierarchy Data
11 Cambridge 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.
Cambridge medical groups by site of care
- Hospitals11
- FQHCs1
Sources: Dmand AI Practice Data and Dmand AI Org Hierarchy Data
Primary care groups are the most common medical groups in Cambridge, with 14
Each group is counted once, under its main specialty. Behavioral and mental health groups are second, with 7, and 8 Cambridge groups are multi-specialty.
- Primary care14
- Behavioral and mental health7
- Eye care5
- Chiropractic4
- Emergency and hospital medicine1
- ENT and audiology1
- Plastic and cosmetic surgery1
- Podiatry1
- Radiology and imaging1
Source: Dmand AI Professional Profile Data
2,485 Massachusetts HCPs work in Cambridge medical groups, 1,375 of them physicians
Each clinician is counted once, across every Cambridge group they are linked to. Only clinicians with a Massachusetts address are counted.
HCPs in Cambridge medical groups by type
- Physicians (MD, DO)1,375
- Nurses and nurse practitioners395
- Behavioral health clinicians302
- Physician assistants281
- Optometrists and opticians29
- Other HCPs103
Source: Dmand AI Affiliation Data
Each Cambridge 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
Free account: 30 days free, self-serve, no credit card.
Sources: Doctors and Clinicians National Downloadable File (CMS), Medicare Physician & Other Practitioners (CMS) and Dmand AI Org Hierarchy Data
Sources for the Cambridge medical group directory
| 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 inaccuracyRemove my information
The directory lists groups based in Cambridge with a Medicare PAC ID.
FAQ
Frequently asked questions about medical groups in Cambridge
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 Cambridge?
There are 35 medical groups based in Cambridge with a Medicare PAC ID: 8 multi-specialty and 27 single-specialty. 19 of them have more than one site.
What is the largest medical group in Cambridge?
Cambridge Health Alliance, with 636 physicians and 1,126 HCPs with a Massachusetts address. Mount Auburn Professional Services is second with 300, and Beth Israel Lahey Health is third with 280.
How many Cambridge medical groups are independent?
22, or 63%, have no larger parent organization in the Dmand AI org hierarchy. 9 belong to a health system or hospital and 4 to a physician platform or corporate owner.
How many Cambridge medical groups practice at a hospital?
11 Cambridge 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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