Doctors in Illinois: 29,265 enrolled in Medicare
Illinois has 29,265 MD and DO clinicians enrolled in Medicare in the CMS file dated Aug 18, 2026: 230 per 100,000 residents, 17th of 51 (the states and DC), against 214 for the US. The most are in Chicago, 6,474 in our physician files. Per capita Illinois is strongest in podiatrists (4th, 6.7 per 100,000).
By Ryan Doyle, founder of Doctor Email List. Published Oct 5, 2026.
Illinois physicians by specialty
Every specialty with at least one clinician in Illinois, 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 | Illinois | Per 100,000 | Rank | US per 100,000 |
|---|---|---|---|---|
| Nurse Practitioners | 11,029 | 86.8 | 33rd | 83.7 |
| Physician Assistants | 4,342 | 34.2 | 40th | 40.8 |
| Internal Medicine Physicians | 4,270 | 33.6 | 16th | 30.9 |
| Family Physicians | 4,195 | 33.0 | 26th | 28.7 |
| Chiropractors | 1,994 | 15.7 | 19th | 11.8 |
| Emergency Physicians | 1,769 | 13.9 | 30th | 13.5 |
| Anesthesiologists | 1,763 | 13.9 | 20th | 13.3 |
| Optometrists | 1,548 | 12.2 | 27th | 10.9 |
| Radiologists | 1,467 | 11.5 | 16th | 11.1 |
| OB/GYNs | 1,388 | 10.9 | 20th | 10.1 |
| Hospitalists | 1,302 | 10.2 | 10th | 7.1 |
| Cardiologists | 1,210 | 9.5 | 16th | 8.7 |
| Psychiatrists | 1,046 | 8.2 | 22nd | 8.4 |
| Orthopedic Surgeons | 947 | 7.5 | 28th | 7.4 |
| General Surgeons | 859 | 6.8 | 36th | 6.9 |
| Podiatrists | 846 | 6.7 | 4th | 4.7 |
| Neurologists | 773 | 6.1 | 16th | 5.5 |
| Ophthalmologists | 716 | 5.6 | 15th | 5.3 |
| Oncologists | 695 | 5.5 | 13th | 5.0 |
| Gastroenterologists | 675 | 5.3 | 11th | 4.7 |
| Pathologists | 551 | 4.3 | 13th | 3.8 |
| Pediatricians | 497 | 3.9 | 27th | 3.8 |
| Dermatologists | 481 | 3.8 | 24th | 4.0 |
| Pulmonologists | 459 | 3.6 | 19th | 3.4 |
| Nephrologists | 452 | 3.6 | 7th | 2.9 |
| Physiatrists | 407 | 3.2 | 13th | 2.7 |
| Urologists | 381 | 3.0 | 29th | 3.0 |
| ENTs | 359 | 2.8 | 28th | 2.9 |
| Infectious Disease Physicians | 281 | 2.2 | 18th | 2.1 |
| Endocrinologists | 281 | 2.2 | 16th | 2.1 |
| Critical care physicians | 229 | 1.8 | 22nd | 1.8 |
| Rheumatologists | 227 | 1.8 | 13th | 1.6 |
| Radiation Oncologists | 223 | 1.8 | 15th | 1.6 |
| Neurosurgeons | 201 | 1.6 | 31st | 1.7 |
| Plastic Surgeons | 167 | 1.3 | 21st | 1.4 |
| Pain Management Physicians | 164 | 1.3 | 23rd | 1.4 |
| Allergists | 154 | 1.2 | 10th | 1.1 |
| Cardiothoracic Surgeons | 144 | 1.1 | 27th | 1.2 |
| Vascular Surgeons | 138 | 1.1 | 34th | 1.2 |
| Sports medicine physicians | 109 | 0.9 | 13th | 0.7 |
| Geriatric medicine physicians | 108 | 0.8 | 13th | 0.6 |
| General practice physicians | 95 | 0.7 | 30th | 1.2 |
| Hospice and palliative care physicians | 77 | 0.6 | 27th | 0.7 |
| Colorectal surgeons | 67 | 0.5 | 22nd | 0.5 |
| Sleep medicine physicians | 56 | 0.4 | 15th | 0.3 |
| Hematologists | 29 | 0.2 | 25th | 0.3 |
| Preventive medicine physicians | 23 | 0.2 | 13th | 0.2 |
| Addiction medicine physicians | 21 | 0.2 | 22nd | 0.2 |
| Osteopathic manipulative medicine physicians | 16 | 0.1 | 37th | 0.3 |
| Micrographic dermatologic surgeons | 16 | 0.1 | 32nd | 0.2 |
| Nuclear medicine physicians | 5 | 0.0 | 38th | 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 Illinois. Nurse practitioners, physician assistants, chiropractors and optometrists have their own files and are not in the MD and DO total.
Where Illinois physicians practice
In the 27,598 clinicians Illinois has across the physician specialty files we sell, counted once each, 38% are women and 27% offer telehealth. The median graduation year is 2005. These are the cities with the most of them.
| City | Clinicians | Share of Illinois |
|---|---|---|
| Chicago | 6,474 | 23% |
| Glenview | 1,654 | 6% |
| Peoria | 871 | 3.2% |
| Evanston | 612 | 2.2% |
| Urbana | 577 | 2.1% |
Largest practice groups in Illinois
Groups ranked by the number of Illinois clinicians the CMS file lists under them. 83% of Illinois 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 | Illinois clinicians listed |
|---|---|
| Northwestern Medical Faculty Foundation | 2,312 |
| Advocate Health and Hospitals Corporation | 1,768 |
| Endeavor Health Medical Group | 1,643 |
| Select Rehabilitation, LLC | 1,149 |
| Osf Multi-Specialty Group | 984 |
A health system can appear under more than one legal name, so a group here may be part of a larger one.
Questions about Illinois doctors
29,265 MD and DO clinicians in Illinois 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 230 per 100,000 residents, 17th 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 Illinois, with 11,029, then physician assistants with 4,342. 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 Illinois 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.