Medical groups in Portland, ME
- Medical groups
- 46
- Multi-specialty
- 10
- Single-specialty
- 36
- More than one site
- 29
- 100+ physicians
- 2
There are 46 medical groups in Portland with a Medicare PAC ID. MaineHealth Primary Care - Family Medicine - Portland is the largest, with 1,712 Maine physicians, followed by Northern Light Mercy Hospital with 208. 67% of Portland groups are independent.
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Work emails and mobile numbers for practice owners, administrators and physician leaders, found through healthcare waterfall enrichment, with a free Dmand AI account.
MaineHealth Primary Care - Family Medicine - Portland is the largest medical group in Portland, with 1,712 physicians
Ranked by physicians with a Maine address linked to each group based in Portland. Northern Light Mercy Hospital is second with 208, and Martin's Point Health Care third with 91. 2 Portland groups have 100 or more physicians.
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Sort and filter all 46 Portland medical groups by specialty, parent organization, group size, EHR in use and decision makers in Dmand AI.
Showing 1 to 10 of 46 medical groups in Portland
Sources: Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Affiliation Data
MaineHealth has the most physicians in Portland medical groups, with 1,727 across 4 groups
Dmand AI maps every Portland medical group to its parent organization, up to the health system or platform at the top. 2 parent organizations have two or more Portland medical groups. Each clinician counts once per parent organization.
See every medical group, site and clinician under MaineHealth
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
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Dmand AI maps the owners, administrators and physician leaders at each of the 46 Portland medical groups, with the parent organization above each one, and finds validated work emails and mobile numbers.
67% of Portland 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.
Portland medical groups by ownership
- Independent31
- Health system or hospital6
- Platform or corporate owner2
- Community or government6
- Other organization1
Source: Dmand AI Org Hierarchy Data
12 Portland 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.
Portland medical groups by site of care
- Hospitals12
- Ambulatory surgery centers5
- FQHCs5
- Therapy and rehab centers3
- Skilled nursing facilities2
- Behavioral health facilities2
- Rural health clinics2
Sources: Dmand AI Practice Data and Dmand AI Org Hierarchy Data
Rehabilitation and therapy groups are the most common medical groups in Portland, with 12
Each group is counted once, under its main specialty. Behavioral and mental health groups are second, with 9, and 10 Portland groups are multi-specialty.
- Rehabilitation and therapy12
- Behavioral and mental health9
- Primary care8
- Chiropractic5
- Eye care4
- Podiatry2
- Anesthesia and pain1
- Dental and oral surgery1
- Dermatology1
- ENT and audiology1
- Radiology and imaging1
- Rheumatology, allergy and immunology1
Source: Dmand AI Professional Profile Data
4,435 Maine HCPs work in Portland medical groups, 2,054 of them physicians
Each clinician is counted once, across every Portland group they are linked to. Only clinicians with a Maine address are counted.
HCPs in Portland medical groups by type
- Physicians (MD, DO)2,054
- Nurses and nurse practitioners1,010
- Physician assistants563
- Behavioral health clinicians495
- Therapists (PT and OT)138
- Other HCPs175
Source: Dmand AI Affiliation Data
Each Portland 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 Portland 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 Portland with a Medicare PAC ID.
FAQ
Frequently asked questions about medical groups in Portland
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 Portland?
There are 46 medical groups based in Portland with a Medicare PAC ID: 10 multi-specialty and 36 single-specialty. 29 of them have more than one site.
What is the largest medical group in Portland?
MaineHealth Primary Care - Family Medicine - Portland, with 1,712 physicians and 3,472 HCPs with a Maine address. Northern Light Mercy Hospital is second with 208, and Martin's Point Health Care is third with 91.
Which health system has the most medical groups in Portland?
By physicians, MaineHealth, with 1,727 across 4 groups, followed by Northern Light Health with 209.
How many Portland medical groups are independent?
31, or 67%, have no larger parent organization in the Dmand AI org hierarchy. 6 belong to a health system or hospital and 2 to a physician platform or corporate owner.
How many Portland medical groups practice at a hospital?
12 Portland 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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