Doctors in Ohio: 26,577 enrolled in Medicare
Ohio has 26,577 MD and DO clinicians enrolled in Medicare in the CMS file dated Aug 18, 2026: 224 per 100,000 residents, 20th of 51 (the states and DC), against 214 for the US. The most are in Cleveland, 4,645 in our physician files. Per capita Ohio is strongest in pulmonologists (4th, 4.7 per 100,000) and hematologists (5th, 0.6 per 100,000).
By Ryan Doyle, founder of Doctor Email List. Published Oct 5, 2026.
Ohio physicians by specialty
Every specialty with at least one clinician in Ohio, 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 | Ohio | Per 100,000 | Rank | US per 100,000 |
|---|---|---|---|---|
| Nurse Practitioners | 13,638 | 115 | 10th | 83.7 |
| Physician Assistants | 4,496 | 37.8 | 33rd | 40.8 |
| Internal Medicine Physicians | 3,611 | 30.4 | 22nd | 30.9 |
| Family Physicians | 3,543 | 29.8 | 31st | 28.7 |
| Emergency Physicians | 1,683 | 14.2 | 26th | 13.5 |
| Anesthesiologists | 1,559 | 13.1 | 23rd | 13.3 |
| Optometrists | 1,475 | 12.4 | 26th | 10.9 |
| Chiropractors | 1,379 | 11.6 | 26th | 11.8 |
| OB/GYNs | 1,318 | 11.1 | 17th | 10.1 |
| Radiologists | 1,220 | 10.3 | 30th | 11.1 |
| Cardiologists | 1,158 | 9.7 | 14th | 8.7 |
| Orthopedic Surgeons | 905 | 7.6 | 27th | 7.4 |
| General Surgeons | 890 | 7.5 | 24th | 6.9 |
| Psychiatrists | 889 | 7.5 | 29th | 8.4 |
| Hospitalists | 823 | 6.9 | 28th | 7.1 |
| Neurologists | 746 | 6.3 | 15th | 5.5 |
| Podiatrists | 693 | 5.8 | 10th | 4.7 |
| Oncologists | 640 | 5.4 | 17th | 5.0 |
| Pediatricians | 639 | 5.4 | 9th | 3.8 |
| Gastroenterologists | 621 | 5.2 | 13th | 4.7 |
| Ophthalmologists | 584 | 4.9 | 25th | 5.3 |
| Pathologists | 559 | 4.7 | 9th | 3.8 |
| Pulmonologists | 554 | 4.7 | 4th | 3.4 |
| Dermatologists | 431 | 3.6 | 30th | 4.0 |
| ENTs | 371 | 3.1 | 17th | 2.9 |
| Urologists | 368 | 3.1 | 25th | 3.0 |
| Nephrologists | 357 | 3.0 | 17th | 2.9 |
| Physiatrists | 331 | 2.8 | 17th | 2.7 |
| Endocrinologists | 285 | 2.4 | 11th | 2.1 |
| Infectious Disease Physicians | 268 | 2.3 | 14th | 2.1 |
| Critical care physicians | 264 | 2.2 | 13th | 1.8 |
| Radiation Oncologists | 226 | 1.9 | 8th | 1.6 |
| Rheumatologists | 209 | 1.8 | 14th | 1.6 |
| Neurosurgeons | 205 | 1.7 | 26th | 1.7 |
| Cardiothoracic Surgeons | 188 | 1.6 | 8th | 1.2 |
| Plastic Surgeons | 182 | 1.5 | 12th | 1.4 |
| Vascular Surgeons | 160 | 1.3 | 14th | 1.2 |
| Pain Management Physicians | 153 | 1.3 | 24th | 1.4 |
| Allergists | 133 | 1.1 | 16th | 1.1 |
| Sports medicine physicians | 115 | 1.0 | 9th | 0.7 |
| Hospice and palliative care physicians | 100 | 0.8 | 13th | 0.7 |
| Colorectal surgeons | 83 | 0.7 | 9th | 0.5 |
| General practice physicians | 77 | 0.6 | 35th | 1.2 |
| Hematologists | 74 | 0.6 | 5th | 0.3 |
| Geriatric medicine physicians | 63 | 0.5 | 23rd | 0.6 |
| Sleep medicine physicians | 62 | 0.5 | 9th | 0.3 |
| Addiction medicine physicians | 35 | 0.3 | 12th | 0.2 |
| Micrographic dermatologic surgeons | 18 | 0.2 | 26th | 0.2 |
| Nuclear medicine physicians | 16 | 0.1 | 25th | 0.2 |
| Osteopathic manipulative medicine physicians | 14 | 0.1 | 38th | 0.3 |
| Preventive medicine physicians | 11 | 0.1 | 35th | 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 Ohio. Nurse practitioners, physician assistants, chiropractors and optometrists have their own files and are not in the MD and DO total.
Where Ohio physicians practice
In the 25,104 clinicians Ohio has across the physician specialty files we sell, counted once each, 36% are women and 23% offer telehealth. The median graduation year is 2005. These are the cities with the most of them.
| City | Clinicians | Share of Ohio |
|---|---|---|
| Cleveland | 4,645 | 19% |
| Columbus | 3,042 | 12% |
| Cincinnati | 2,517 | 10% |
| Toledo | 764 | 3% |
| Dayton | 702 | 2.8% |
Largest practice groups in Ohio
Groups ranked by the number of Ohio clinicians the CMS file lists under them. 86% of Ohio 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 | Ohio clinicians listed |
|---|---|
| Cleveland Clinic | 3,424 |
| Ohiohealth Corporation | 1,174 |
| University Hospitals Medical Group Inc | 1,101 |
| University of Cincinnati Physicians Company LLC | 793 |
| The Metrohealth System | 600 |
A health system can appear under more than one legal name, so a group here may be part of a larger one.
Questions about Ohio doctors
26,577 MD and DO clinicians in Ohio 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 224 per 100,000 residents, 20th 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 Ohio, with 13,638, then physician assistants with 4,496. 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 Ohio 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.