Quick answers
- Which hospitals does Chad Ronholm work at?
- Medicare's official clinician data lists Chad Ronholm at 5 hospitals: Barnes Jewish Hospital, Fayette County Hospital, Memorial Hospital, SSM Health St Mary's Hospital - St Louis and SSM Health St Mary's Hospital -Centralia. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Chad Ronholm see patients?
- Medicare's clinician data lists 1 practice location in Saint Louis, MO. Call before your visit to confirm the address.
- What is Chad Ronholm's specialty?
- Medicare lists Rheumatology as the primary specialty.
- Does Chad Ronholm accept Medicare assignment?
- Yes. Medicare's clinician data says Chad Ronholm 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 Chad Ronholm?
- (314) 645-4434, as listed in official Medicare / NPI Registry data.
- What is Chad Ronholm's NPI number?
- 1306027909. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Chad Ronholm works
Medicare's Facility Affiliation Data lists Chad Ronholm at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Barnes Jewish HospitalSaint Louis, MO · Acute Care Hospital · CCN 260032
- Fayette County HospitalVandalia, IL · Critical Access Hospital · CCN 141346
- Memorial HospitalBelleville, IL · Acute Care Hospital · CCN 140185
- SSM Health St Mary's Hospital - St LouisSaint Louis, MO · Acute Care Hospital · CCN 260091
- SSM Health St Mary's Hospital -CentraliaCentralia, IL · Acute Care Hospital · CCN 140034
Practice locations
Addresses where Chad Ronholm is enrolled with Medicare (CMS data updated 2026-10-02).
- 520 S Elm Ave, Saint Louis RheumatologySaint Louis, MO 63119 (314) 645‑4434
Group practices
Medicare enrollment lists Chad Ronholm as a member of this group (CMS data updated 2026-10-02).
- Clayton Medical Associates PC5 clinicians in the group
Specialties
- Rheumatologyprimary
Other rheumatologists in Saint Louis
Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2007 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1306027909 |
| 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