Quick answers
- Which hospitals does Mark D. Wittry work at?
- Medicare's official clinician data lists Mark D. Wittry at 5 hospitals: Mercy Hospital Ada, Mercy Hospital Ardmore, Inc, Mercy Hospital Jefferson, Mercy Hospital St Louis and Mercy Hospital Washington. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark D. Wittry see patients?
- Medicare's clinician data lists 2 practice locations, including Saint Louis, MO and Washington, MO. Call before your visit to confirm the address.
- What is Mark D. Wittry's specialty?
- Medicare lists Nuclear Medicine as the primary specialty.
- Does Mark D. Wittry accept Medicare assignment?
- Yes. Medicare's clinician data says Mark D. Wittry 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 Mark D. Wittry?
- (314) 251-6031, as listed in official Medicare / NPI Registry data.
- What is Mark D. Wittry's NPI number?
- 1497721088. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark D. Wittry works
Medicare's Facility Affiliation Data lists Mark D. Wittry at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Mercy Hospital AdaAda, OK · Acute Care Hospital · CCN 370020
- Mercy Hospital Ardmore, IncArdmore, OK · Acute Care Hospital · CCN 370047
- Mercy Hospital JeffersonCrystal City, MO · Acute Care Hospital · CCN 260023
- Mercy Hospital St LouisSaint Louis, MO · Acute Care Hospital · CCN 260020
- Mercy Hospital WashingtonWashington, MO · Acute Care Hospital · CCN 260052
Practice locations
Addresses where Mark D. Wittry is enrolled with Medicare (CMS data updated 2026-10-02).
- 615 S New Ballas RdSaint Louis, MO 63141 (314) 251‑6031
- 901 E 5th StWashington, MO 63090 (636) 239‑8250
Group practices
Medicare enrollment lists Mark D. Wittry as a member of this group (CMS data updated 2026-10-02).
- West County Radiological Group Inc102 clinicians in the group
Specialties
- Nuclear Medicineprimary
Other nuclear medicine doctors in Saint Louis
Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Rush Medical College Of Rush University |
| Graduation year | 1983 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1497721088 |
| 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