Medical groups in Alton, IL
- Medical groups
- 44
- Multi-specialty
- 5
- Single-specialty
- 39
- More than one site
- 35
- 100+ physicians
- 1
There are 44 medical groups in Alton with a Medicare PAC ID. OSF Saint Anthony's Health Center is the largest, with 156 Illinois physicians, followed by WashU Medicine Physicians with 88. 25% of Alton groups are independent.
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OSF Saint Anthony's Health Center is the largest medical group in Alton, with 156 physicians
Ranked by physicians with an Illinois address linked to each group based in Alton. WashU Medicine Physicians is second with 88, and Southeastern Emergency Physicians of Memphis LLC third with 49. 1 Alton group has 100 or more physicians.
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Sort and filter all 44 Alton medical groups by specialty, parent organization, group size, EHR in use and decision makers in Dmand AI.
Showing 1 to 10 of 44 medical groups in Alton
Sources: Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Affiliation Data
OSF HealthCare has the most physicians in Alton medical groups, with 157 across 3 groups
Dmand AI maps every Alton medical group to its parent organization, up to the health system or platform at the top. 2 parent organizations have two or more Alton medical groups. Each clinician counts once per parent organization.
See every medical group, site and clinician under OSF HealthCare
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 44 Alton medical groups, with the parent organization above each one, and finds validated work emails and mobile numbers.
25% of Alton medical 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.
Alton medical groups by ownership
- Independent11
- Health system or hospital5
- Platform or corporate owner28
Source: Dmand AI Org Hierarchy Data
5 Alton medical groups practice at a hospital site
Beyond their own offices, groups practice at the sites of care linked to them in the org hierarchy. A group can practice at several kinds of site, so the shares overlap.
Alton medical groups by site of care
- Hospitals5
- Rural health clinics2
Sources: Dmand AI Practice Data and Dmand AI Org Hierarchy Data
Eye care groups are the most common medical groups in Alton, with 31
Each group is counted once, under its main specialty. Primary care groups are second, with 3, and 5 Alton groups are multi-specialty.
- Eye care31
- Primary care3
- Chiropractic2
- Emergency and hospital medicine2
- Rehabilitation and therapy2
- Behavioral and mental health1
- Orthopedics and sports medicine1
- Pediatrics1
- Podiatry1
Source: Dmand AI Professional Profile Data
1,006 Illinois HCPs work in Alton medical groups, 299 of them physicians
Each clinician is counted once, across every Alton group they are linked to. Only clinicians with an Illinois address are counted.
HCPs in Alton medical groups by type
- Optometrists and opticians477
- Physicians (MD, DO)299
- Nurses and nurse practitioners139
- Physician assistants30
- Behavioral health clinicians22
- Other HCPs39
Source: Dmand AI Affiliation Data
Each Alton medical 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 Alton medical group directory
| 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
The directory lists groups based in Alton with a Medicare PAC ID.
FAQ
Frequently asked questions about medical groups in Alton
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
How many medical groups are in Alton?
There are 44 medical groups based in Alton with a Medicare PAC ID: 5 multi-specialty and 39 single-specialty. 35 of them have more than one site.
What is the largest medical group in Alton?
OSF Saint Anthony's Health Center, with 156 physicians and 289 HCPs with an Illinois address. WashU Medicine Physicians is second with 88, and Southeastern Emergency Physicians of Memphis LLC is third with 49.
Which health system has the most medical groups in Alton?
By physicians, OSF HealthCare, with 157 across 3 groups, followed by Aeg Vision with 0.
How many Alton medical groups are independent?
11, or 25%, have no larger parent organization in the Dmand AI org hierarchy. 5 belong to a health system or hospital and 28 to a physician platform or corporate owner.
How many Alton medical groups practice at a hospital?
5 Alton groups practice at a hospital site linked to them in the Dmand AI org hierarchy.
How do I find a medical group's NPI or PAC ID?
Each medical group profile lists the group NPI and Medicare PAC ID at the top, with the main address and phone number. The NPI comes from the NPPES NPI Registry and the PAC ID from CMS Medicare enrollment.
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