Doctors in Maine: 3,861 enrolled in Medicare
Maine has 3,861 MD and DO clinicians enrolled in Medicare in the CMS file dated Aug 18, 2026: 275 per 100,000 residents, 4th of 51 (the states and DC), against 214 for the US. The most are in Portland, 840 in our physician files. Per capita Maine is strongest in physician assistants (2nd, 76.1 per 100,000), family physicians (2nd, 48.9 per 100,000), emergency physicians (2nd, 25.6 per 100,000) and hospitalists (3rd, 14.1 per 100,000).
By Ryan Doyle, founder of Doctor Email List. Published Oct 5, 2026.
Maine physicians by specialty
Every specialty with at least one clinician in Maine, largest first. Rank is among the states and DC (51 in all) by clinicians per 100,000 residents. Where we have a state page or a list for the specialty, the name links to it.
| Specialty | Maine | Per 100,000 | Rank | US per 100,000 |
|---|---|---|---|---|
| Nurse Practitioners | 1,841 | 131 | 4th | 83.7 |
| Physician Assistants | 1,069 | 76.1 | 2nd | 40.8 |
| Family Physicians | 687 | 48.9 | 2nd | 28.7 |
| Internal Medicine Physicians | 459 | 32.7 | 18th | 30.9 |
| Emergency Physicians | 360 | 25.6 | 2nd | 13.5 |
| Chiropractors | 228 | 16.2 | 17th | 11.8 |
| Optometrists | 221 | 15.7 | 9th | 10.9 |
| Anesthesiologists | 214 | 15.2 | 13th | 13.3 |
| Hospitalists | 198 | 14.1 | 3rd | 7.1 |
| Psychiatrists | 174 | 12.4 | 8th | 8.4 |
| Cardiologists | 158 | 11.2 | 8th | 8.7 |
| OB/GYNs | 157 | 11.2 | 15th | 10.1 |
| Orthopedic Surgeons | 154 | 11.0 | 5th | 7.4 |
| General Surgeons | 145 | 10.3 | 5th | 6.9 |
| Radiologists | 124 | 8.8 | 39th | 11.1 |
| Pediatricians | 89 | 6.3 | 4th | 3.8 |
| Oncologists | 85 | 6.0 | 7th | 5.0 |
| Neurologists | 74 | 5.3 | 23rd | 5.5 |
| Gastroenterologists | 74 | 5.3 | 12th | 4.7 |
| Ophthalmologists | 73 | 5.2 | 20th | 5.3 |
| Podiatrists | 67 | 4.8 | 16th | 4.7 |
| Urologists | 56 | 4.0 | 3rd | 3.0 |
| Dermatologists | 53 | 3.8 | 25th | 4.0 |
| Pathologists | 49 | 3.5 | 29th | 3.8 |
| Pulmonologists | 46 | 3.3 | 28th | 3.4 |
| Physiatrists | 44 | 3.1 | 14th | 2.7 |
| ENTs | 43 | 3.1 | 22nd | 2.9 |
| Osteopathic manipulative medicine physicians | 42 | 3.0 | 1st | 0.3 |
| Nephrologists | 35 | 2.5 | 35th | 2.9 |
| Vascular Surgeons | 34 | 2.4 | 2nd | 1.2 |
| Infectious Disease Physicians | 25 | 1.8 | 35th | 2.1 |
| Endocrinologists | 25 | 1.8 | 27th | 2.1 |
| Geriatric medicine physicians | 24 | 1.7 | 2nd | 0.6 |
| Hospice and palliative care physicians | 22 | 1.6 | 3rd | 0.7 |
| Neurosurgeons | 21 | 1.5 | 38th | 1.7 |
| Rheumatologists | 21 | 1.5 | 26th | 1.6 |
| Radiation Oncologists | 20 | 1.4 | 32nd | 1.6 |
| Sports medicine physicians | 20 | 1.4 | 3rd | 0.7 |
| Critical care physicians | 14 | 1.0 | 43rd | 1.8 |
| Plastic Surgeons | 14 | 1.0 | 44th | 1.4 |
| Cardiothoracic Surgeons | 14 | 1.0 | 37th | 1.2 |
| Colorectal surgeons | 12 | 0.9 | 4th | 0.5 |
| Allergists | 10 | 0.7 | 40th | 1.1 |
| General practice physicians | 7 | 0.5 | 44th | 1.2 |
| Pain Management Physicians | 7 | 0.5 | 51st | 1.4 |
| Hematologists | 6 | 0.4 | 12th | 0.3 |
| Addiction medicine physicians | 6 | 0.4 | 6th | 0.2 |
| Micrographic dermatologic surgeons | 4 | 0.3 | 6th | 0.2 |
| Sleep medicine physicians | 3 | 0.2 | 39th | 0.3 |
| Preventive medicine physicians | 1 | 0.1 | 44th | 0.2 |
Counts are one row per NPI under the clinician's primary Medicare specialty, from the CMS file dated Aug 18, 2026. Rates use the Census Bureau's July 2024 estimate for Maine. Nurse practitioners, physician assistants, chiropractors and optometrists have their own files and are not in the MD and DO total.
Where Maine physicians practice
In the 3,559 clinicians Maine has across the physician specialty files we sell, counted once each, 40% are women and 20% offer telehealth. The median graduation year is 2006. These are the cities with the most of them.
| City | Clinicians | Share of Maine |
|---|---|---|
| Portland | 840 | 24% |
| Bangor | 434 | 12% |
| Scarborough | 234 | 6.6% |
| Lewiston | 214 | 6% |
| Biddeford | 213 | 6% |
Largest practice groups in Maine
Groups ranked by the number of Maine clinicians the CMS file lists under them. 86% of Maine physicians with a group on file are in a group of 50 or more listed clinicians, against 80% across the US.
| Practice or health system, as CMS prints it | Maine clinicians listed |
|---|---|
| Mainehealth | 1,179 |
| Eastern Maine Medical Center | 264 |
| Mainegeneral Medical Center | 203 |
| Central Maine Medical Center | 149 |
| Spectrum Healthcare Partners PA | 148 |
A health system can appear under more than one legal name, so a group here may be part of a larger one.
Questions about Maine doctors
3,861 MD and DO clinicians in Maine are enrolled in Medicare in the CMS file dated Aug 18, 2026, one per NPI, in the state of their main practice location. That is 275 per 100,000 residents, 4th of 51 among the states and DC. Physicians who bill no Medicare patients are not in the file.
Nurse Practitioners are the largest group in Maine, with 1,841, then physician assistants with 1,069. Nurse practitioners and physician assistants are counted in their own files and are not in the MD and DO total.
We sell national lists, one CSV per specialty for $295, or every specialty in one file for $995. We don't sell a state-only file. City, state and ZIP are on nearly every row, so keeping the Maine rows is one filter in any spreadsheet.
States with a similar count per capita
Specialty email lists
National CSVs, one per specialty. City, state and ZIP are on the rows, so any state is one filter away.