Quick answers
- Where does William R. Reilly see patients?
- Medicare's clinician data lists 2 practice locations, including Saint Louis, MO and Red Bud, IL. Call before your visit to confirm the address.
- What is William R. Reilly's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty, and also Internal Medicine and Interventional Cardiology.
- Does William R. Reilly accept Medicare assignment?
- Yes. Medicare's clinician data says William R. Reilly 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 William R. Reilly?
- (314) 287-6184, as listed in official Medicare / NPI Registry data.
- What is William R. Reilly's NPI number?
- 1205846516. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where William R. Reilly is enrolled with Medicare (CMS data updated 2026-10-02).
- 1028 S Kirkwood Rd, Deaconess Il Specialty KirkwoodSaint Louis, MO 63122 (314) 287‑6184
- 325 Spring StRed Bud, IL 62278 (618) 939‑2273
Group practices
Medicare enrollment lists William R. Reilly as a member of this group (CMS data updated 2026-10-02).
- Deaconess Illinois Specialty Clinic, Inc.148 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Missouri →
Other cardiologists in Saint Louis
Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Southern Illinois University School Of Medicine |
| Graduation year | 1980 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1205846516 |
| 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
- 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