Largest primary care groups in Illinois
- Groups
- 1,232
- Internal Medicine groups
- 586
- Family Medicine groups
- 306
- Internal medicine specialists
- 7,661
- Family physicians
- 1,436
There are 1,232 primary care groups in Illinois with a Medicare PAC ID: 586 internal medicine, 306 family medicine, 302 nurse practitioner, 28 physician assistant, 7 general practice and 3 clinical nurse specialist. Northwestern Medical Faculty Foundation is the largest internal medicine group, with 920 internal medicine specialists, and PCC Community Wellness Center the largest family medicine group, with 93 family physicians.
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Northwestern Medical Faculty Foundation is the largest primary care group in Illinois, with 3,118 physicians
Ranked by physicians with an Illinois address linked to each group. Endeavor Health Medical Group is second with 3,048, and Dreyer Medical Clinic (Advocate Medical Group) third with 3,020. 59 Illinois groups have 100 or more physicians.
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Showing 1 to 10 of 1,232 primary care groups in Illinois
Sources: Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Affiliation Data
Northwestern Medical Faculty Foundation is the largest internal medicine group in Illinois, with 920 internal medicine specialists
Ranked by internal medicine specialists with an Illinois address linked to each group whose main sub-specialty is internal medicine. Dreyer Medical Clinic (Advocate Medical Group) is second with 904, and Endeavor Health Medical Group third with 808.
Sources: Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Affiliation Data
PCC Community Wellness Center is the largest family medicine group in Illinois, with 93 family physicians
Ranked by family physicians with an Illinois address linked to each group whose main sub-specialty is family medicine. SIU Center for Family Medicine is second with 83, and UChicago Medicine AdventHealth Medical Group third with 82.
Sources: Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Affiliation Data
Paragon Clinical is the largest nurse practitioner group in Illinois, with 166 nurse practitioner specialists
Ranked by nurse practitioner specialists with an Illinois address linked to each group whose main sub-specialty is nurse practitioner. CVS MinuteClinic is second with 111, and Emediate Cure Quick Care third with 43.
Sources: Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Affiliation Data
Cermak Immediate Care is the largest physician assistant group in Illinois, with 30 physician assistant specialists
Ranked by physician assistant specialists with an Illinois address linked to each group whose main sub-specialty is physician assistant. Provida Family Medicine is second with 6, and Hermes Health third with 3.
Sources: Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Affiliation Data
EverWell Wound Care and Paulina Medical Clinic have the most general practice specialists of any Illinois general practice group, with 1 each
Ranked by general practice specialists with an Illinois address linked to each group whose main sub-specialty is general practice.
Sources: Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Affiliation Data
Hornik Neuroscience Associates and Westminster Place have the most clinical nurse specialist specialists of any Illinois clinical nurse specialist group, with 1 each
Ranked by clinical nurse specialist specialists with an Illinois address linked to each group whose main sub-specialty is clinical nurse specialist.
Sources: Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Affiliation Data
Northwestern Medicine has the most physicians in Illinois primary care groups, with 3,974 across 5 groups
Dmand AI maps every medical group to its parent organization, up to the health system or platform at the top. 61 parent organizations have two or more Illinois primary care groups. Among health systems, Trinity Health has the most groups, 22. Each clinician counts once per parent organization.
See every medical group, site and clinician under Northwestern Medicine
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 1,232 Illinois primary care groups, with the parent organization above each one, and finds validated work emails and mobile numbers.
56% of Illinois primary care 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.
Illinois primary care groups by ownership
- Independent692
- Health system or hospital245
- Platform or corporate owner100
- Community or government35
- Other organization160
Sites of care beyond their own offices
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Dmand AI maps each group to the health system, physician platform or management company above it, so you can sell to the owner, not one site.
Source: Dmand AI Org Hierarchy Data
296 Illinois primary care groups practice at a hospital site, and 89 at a skilled nursing facility
Sites of care linked to each group in the org hierarchy, beyond its own offices. A group can practice at several kinds of site.
Illinois primary care groups by site of care
- Hospitals296
- Skilled nursing facilities89
- Rural health clinics84
- FQHCs61
- Ambulatory surgery centers27
- Hospices25
- Dialysis centers16
- Behavioral health facilities15
- Home health agencies13
- Therapy and rehab centers12
Clinicians in Illinois primary care groups
Sources: Dmand AI Practice Data and Dmand AI Org Hierarchy Data
Chicago has the most primary care groups in Illinois, with 241
More Illinois cities with primary care groups
- Skokie20
- Springfield20
- Oak Lawn18
- Des Plaines17
- Elgin17
- Joliet17
- Oak Park17
- Libertyville16
- Peoria16
- Hoffman Estates14
- Aurora13
- Glenview13
- Lombard13
- Rockford13
- Bolingbrook12
Source: Doctors and Clinicians National Downloadable File (CMS)
Each Illinois primary care 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
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Sources: Doctors and Clinicians National Downloadable File (CMS), Medicare Physician & Other Practitioners (CMS) and Dmand AI Org Hierarchy Data
Sources for the Illinois primary care group list
| 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
Groups whose main specialty is primary care and that have a Medicare PAC ID.
FAQ
Frequently asked questions about primary care groups in Illinois
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is the largest internal medicine group in Illinois?
Northwestern Medical Faculty Foundation, based in Chicago, with 920 internal medicine specialists and 5,140 HCPs. Dreyer Medical Clinic (Advocate Medical Group) is second with 904.
What is the largest family medicine group in Illinois?
PCC Community Wellness Center, based in Oak Park, with 93 family physicians and 218 HCPs. SIU Center for Family Medicine is second with 83.
How many primary care groups are in Illinois?
There are 1,232 primary care groups in Illinois with a Medicare PAC ID: 586 internal medicine, 306 family medicine, 302 nurse practitioner, 28 physician assistant, 7 general practice and 3 clinical nurse specialist. Between them they have 7,661 internal medicine specialists, 1,436 family physicians, 1,096 nurse practitioner specialists, 84 physician assistant specialists, 2 general practice specialists and 2 clinical nurse specialist specialists.
Which companies own the most primary care groups?
By physicians, Northwestern Medicine, with 3,974 across 5 groups, followed by Endeavor Health with 3,366 and Advocate Health with 3,055.
How many Illinois primary care groups are independent?
692, or 56%, have no larger parent organization in the Dmand AI org hierarchy. 245 belong to a health system or hospital and 100 to a physician platform or corporate owner.
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