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Healthcare providers in Maine: counts by specialty
How many healthcare providers work in Maine? The federal NPPES registry listed 42,710 active NPIs with a practice address in the state as of the June 2026 snapshot, the 41st largest workforce among the 50 states and the District of Columbia. The single largest specialty is Clinical Social Worker, and Portland is the city with the most records. The table below lists the 30 specialties with the most active providers and the share each one holds.
The 30 largest specialties in Maine
| # | Specialty (primary taxonomy) | Active NPIs | % of state |
|---|---|---|---|
| 1 | Clinical Social Worker | 3,940 | 9.2% |
| 2 | Physical Therapist | 1,851 | 4.3% |
| 3 | Pharmacist | 1,374 | 3.2% |
| 4 | Occupational Therapist | 1,372 | 3.2% |
| 5 | Family Medicine Physician | 1,371 | 3.2% |
| 6 | Mental Health Counselor | 1,293 | 3.0% |
| 7 | Family Nurse Practitioner | 1,285 | 3.0% |
| 8 | Speech-Language Pathologist | 1,247 | 2.9% |
| 9 | Professional Counselor | 1,129 | 2.6% |
| 10 | Physician Assistant | 968 | 2.3% |
| 11 | Addiction (Substance Use Disorder) Counselor | 878 | 2.1% |
| 12 | Student in an Organized Health Care Education/Training Program | 837 | 2.0% |
| 13 | General Practice Dentistry | 719 | 1.7% |
| 14 | Internal Medicine Physician | 679 | 1.6% |
| 15 | Chiropractor | 657 | 1.5% |
| 16 | Massage Therapist | 638 | 1.5% |
| 17 | Registered Nurse | 599 | 1.4% |
| 18 | Social Worker | 583 | 1.4% |
| 19 | In Home Supportive Care Agency | 580 | 1.4% |
| 20 | Psychiatric/Mental Health Nurse Practitioner | 542 | 1.3% |
| 21 | Certified Registered Nurse Anesthetist | 535 | 1.3% |
| 22 | Dentist | 498 | 1.2% |
| 23 | Nurse Practitioner | 465 | 1.1% |
| 24 | Emergency Medicine Physician | 464 | 1.1% |
| 25 | Counselor | 461 | 1.1% |
| 26 | Dental Hygienist | 460 | 1.1% |
| 27 | Optometrist | 435 | 1.0% |
| 28 | Community/Behavioral Health Agency | 376 | 0.9% |
| 29 | Registered Dietitian | 367 | 0.9% |
| 30 | Psychiatry Physician | 355 | 0.8% |
What the numbers show
Clinical Social Worker leads with 3,940 active records, 9.2% of everything the state has, or 2.1 times the volume of Physical Therapist, the runner up at 1,851. Pharmacist rounds out the podium with 1,374. Together, the top 5 specialties account for 23.2% of Maine's providers, and the 30 listed in the table cover 63.1% of the total. Overall, the state registry splits into 558 distinct taxonomies.
Geographically, active NPIs spread across 588 cities and towns in the state, but with heavy concentration: Portland (6,998), Bangor (3,677) and Lewiston (2,147) post the largest volumes. Maine holds 0.5% of all active US providers registered across the 50 states and the District of Columbia.
Source and method
Data: NPPES Data Dissemination file (National Plan and Provider Enumeration System), published by CMS as public domain data, snapshot of June 2026. Each provider is counted once, in the state and city of the Provider Business Practice Location, under the primary taxonomy declared in the NPI record itself. Only active NPI records are counted.
Important: an active NPI does not mean the professional is currently practicing, accepting new patients or even still working in the field; it only means the registration number remains valid. This page publishes aggregate counts only, never individual records.
Last updated: · Methodology and sources