Quick answers
- Which hospitals does Ann M. Hagedorn work at?
- Medicare's official clinician data lists Ann M. Hagedorn at 3 hospitals: Anderson Hospital, HSHS St Elizabeth's Hospital and Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Ann M. Hagedorn see patients?
- Medicare's clinician data lists 1 practice location in Belleville, IL. Call before your visit to confirm the address.
- What is Ann M. Hagedorn's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Hospitalist.
- Does Ann M. Hagedorn accept Medicare assignment?
- Yes. Medicare's clinician data says Ann M. Hagedorn accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Ann M. Hagedorn?
- (618) 277-7700, as listed in official Medicare / NPI Registry data.
- What is Ann M. Hagedorn's NPI number?
- 1245237825. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Ann M. Hagedorn works
Medicare's Facility Affiliation Data lists Ann M. Hagedorn at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Anderson HospitalMaryville, IL · Acute Care Hospital · CCN 140289
- HSHS St Elizabeth's HospitalO Fallon, IL · Acute Care Hospital · CCN 140187
- Memorial HospitalBelleville, IL · Acute Care Hospital · CCN 140185
Practice locations
Addresses where Ann M. Hagedorn is enrolled with Medicare (CMS data updated 2026-10-02).
- 101 S Belt WBelleville, IL 62220 (618) 277‑7700
Group practices
Medicare enrollment lists Ann M. Hagedorn as a member of this group (CMS data updated 2026-10-02).
- Cep America - Illinois SNF LLP8 clinicians in the group
Specialties
- Internal Medicineprimary
- Hospitalistalso
Other internal medicine doctors in Belleville
Clinicians with the same Medicare primary specialty in Belleville, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Missouri, Kansas City, School Of Medicine |
| Graduation year | 1999 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1245237825 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians