Quick answers
- Which hospitals does Walter A. Dimmitt work at?
- Medicare's official clinician data lists Walter A. Dimmitt at 5 hospitals: Hermann Area District Hospital, Mercy Hospital Lincoln, Mercy Hospital St Louis, Mercy Hospital Washington and Missouri Baptist Sullivan Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Walter A. Dimmitt see patients?
- Medicare's clinician data lists 1 practice location in Washington, MO. Call before your visit to confirm the address.
- What is Walter A. Dimmitt's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty.
- Does Walter A. Dimmitt accept Medicare assignment?
- Yes. Medicare's clinician data says Walter A. Dimmitt 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 Walter A. Dimmitt?
- (314) 251-1700, as listed in official Medicare / NPI Registry data.
- What is Walter A. Dimmitt's NPI number?
- 1467532267. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Walter A. Dimmitt works
Medicare's Facility Affiliation Data lists Walter A. Dimmitt at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Hermann Area District HospitalHermann, MO · Critical Access Hospital · CCN 261314
- Mercy Hospital LincolnTroy, MO · Critical Access Hospital · CCN 261319
- Mercy Hospital St LouisSaint Louis, MO · Acute Care Hospital · CCN 260020
- Mercy Hospital WashingtonWashington, MO · Acute Care Hospital · CCN 260052
- Missouri Baptist Sullivan HospitalSullivan, MO · Critical Access Hospital · CCN 261337
Practice locations
Addresses where Walter A. Dimmitt is enrolled with Medicare (CMS data updated 2026-10-02).
- 901 Patients 1st Dr, Suite 2500Washington, MO 63090 (314) 251‑1700
Group practices
Medicare enrollment lists Walter A. Dimmitt as a member of this group (CMS data updated 2026-10-02).
- Mercy Clinic Heart and Vascular LLC113 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Missouri →
Other cardiologists in Missouri
Clinicians with the same Medicare primary specialty in Missouri — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Saint Louis University School Of Medicine |
| Graduation year | 2002 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1467532267 |
| 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