Medical groups in Chelmsford, MA
- Medical groups
- 27
- Multi-specialty
- 3
- Single-specialty
- 24
- More than one site
- 14
There are 27 medical groups in Chelmsford with a Medicare PAC ID. New England Inpatient Specialists is the largest, with 77 Massachusetts physicians, followed by New England Inpatient Specialists with 68. 81% of Chelmsford groups are independent.
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New England Inpatient Specialists is the largest medical group in Chelmsford, with 77 physicians
Ranked by physicians with a Massachusetts address linked to each group based in Chelmsford. New England Inpatient Specialists is second with 68, and New England Inpatient Specialists third with 29.
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Sort and filter all 27 Chelmsford medical groups by specialty, parent organization, group size, EHR in use and decision makers in Dmand AI.
Showing 1 to 10 of 27 medical groups in Chelmsford
Sources: Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Affiliation Data
New England Inpatient Specialists has the most physicians in Chelmsford medical groups, with 116 across 3 groups
Dmand AI maps every Chelmsford medical group to its parent organization, up to the health system or platform at the top. 1 parent organizations have two or more Chelmsford medical groups. Each clinician counts once per parent organization.
- New England Inpatient Specialists
- New England Inpatient Specialists
- New England Inpatient Specialists
- 1 more Chelmsford groups and their practice sites
See every medical group, site and clinician under New England Inpatient Specialists
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 27 Chelmsford medical groups, with the parent organization above each one, and finds validated work emails and mobile numbers.
81% of Chelmsford 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.
Chelmsford medical groups by ownership
- Independent22
- Platform or corporate owner5
Source: Dmand AI Org Hierarchy Data
6 Chelmsford 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.
Chelmsford medical groups by site of care
- Hospitals6
- Skilled nursing facilities2
- FQHCs2
- Behavioral health facilities1
Sources: Dmand AI Practice Data and Dmand AI Org Hierarchy Data
Primary care groups are the most common medical groups in Chelmsford, with 11
Each group is counted once, under its main specialty. Behavioral and mental health groups are second, with 3, and 3 Chelmsford groups are multi-specialty.
- Primary care11
- Behavioral and mental health3
- ENT and audiology3
- Rehabilitation and therapy3
- Eye care2
- Chiropractic1
- Dermatology1
- Podiatry1
- Rheumatology, allergy and immunology1
- General and specialty surgery1
Source: Dmand AI Professional Profile Data
421 Massachusetts HCPs work in Chelmsford medical groups, 185 of them physicians
Each clinician is counted once, across every Chelmsford group they are linked to. Only clinicians with a Massachusetts address are counted.
HCPs in Chelmsford medical groups by type
- Physicians (MD, DO)185
- Nurses and nurse practitioners125
- Behavioral health clinicians40
- Physician assistants37
- Optometrists and opticians9
- Other HCPs25
Source: Dmand AI Affiliation Data
Each Chelmsford 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 Chelmsford 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 Chelmsford with a Medicare PAC ID.
FAQ
Frequently asked questions about medical groups in Chelmsford
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 Chelmsford?
There are 27 medical groups based in Chelmsford with a Medicare PAC ID: 3 multi-specialty and 24 single-specialty. 14 of them have more than one site.
What is the largest medical group in Chelmsford?
New England Inpatient Specialists, with 77 physicians and 100 HCPs with a Massachusetts address. New England Inpatient Specialists is second with 68, and New England Inpatient Specialists is third with 29.
How many Chelmsford medical groups are independent?
22, or 81%, have no larger parent organization in the Dmand AI org hierarchy. 5 to a physician platform or corporate owner.
How many Chelmsford medical groups practice at a hospital?
6 Chelmsford 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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