Quick answers
- Which hospitals does Robert C. Proffer work at?
- Medicare's official clinician data lists Robert C. Proffer at 3 hospitals: Mercy Hospital Jefferson, Mercy Hospital South and Mercy Hospital St Louis. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Robert C. Proffer see patients?
- Medicare's clinician data lists 4 practice locations, including Saint Louis, MO, St Louis, MO and Washington, MO. Call before your visit to confirm the address.
- What is Robert C. Proffer's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Robert C. Proffer accept Medicare assignment?
- Yes. Medicare's clinician data says Robert C. Proffer 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 Robert C. Proffer?
- (314) 251-6394, as listed in official Medicare / NPI Registry data.
- What is Robert C. Proffer's NPI number?
- 1376174417. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Robert C. Proffer works
Medicare's Facility Affiliation Data lists Robert C. Proffer at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mercy Hospital JeffersonCrystal City, MO · Acute Care Hospital · CCN 260023
- Mercy Hospital SouthSaint Louis, MO · Acute Care Hospital · CCN 260077
- Mercy Hospital St LouisSaint Louis, MO · Acute Care Hospital · CCN 260020
Practice locations
Addresses where Robert C. Proffer is enrolled with Medicare (CMS data updated 2026-10-02).
- 607 S New Ballas Rd, 2300 Mercy Clinic Ear Nose Throat DavSaint Louis, MO 63141 (314) 251‑6394
- 615 S New Ballas Rd, Administration Building 5th FloorSt Louis, MO 63141
- 615 S New Ballas Rd AdministrationSaint Louis, MO 63141
- 901 Patients 1st Dr, Suite 3500Washington, MO 63090 (636) 390‑1570
Group practices
Medicare enrollment lists Robert C. Proffer as a member of this group (CMS data updated 2026-10-02).
- Mercy Clinic Ent LLC12 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Saint Louis
Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.
Clinician information
| Graduation year | 2019 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1376174417 |
| 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