Quick answers
- Which hospitals does Thomas A. Showalter Iii work at?
- Medicare's official clinician data lists Thomas A. Showalter Iii at 5 hospitals: INTEGRIS Baptist Medical Center, Inc, INTEGRIS Canadian Valley Hospital, INTEGRIS Health Edmond Hospital, INTEGRIS Southwest Medical Center and O U Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Thomas A. Showalter Iii see patients?
- Medicare's clinician data lists 1 practice location in Oklahoma City, OK. Call before your visit to confirm the address.
- What is Thomas A. Showalter Iii's specialty?
- Medicare lists Medical Oncology as the primary specialty.
- Does Thomas A. Showalter Iii accept Medicare assignment?
- Yes. Medicare's clinician data says Thomas A. Showalter Iii 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 Thomas A. Showalter Iii?
- (405) 773-6400, as listed in official Medicare / NPI Registry data.
- What is Thomas A. Showalter Iii's NPI number?
- 1780853358. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Thomas A. Showalter Iii works
Medicare's Facility Affiliation Data lists Thomas A. Showalter Iii at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- INTEGRIS Baptist Medical Center, IncOklahoma City, OK · Acute Care Hospital · CCN 370028
- INTEGRIS Canadian Valley HospitalYukon, OK · Acute Care Hospital · CCN 370211
- INTEGRIS Health Edmond HospitalEdmond, OK · Acute Care Hospital · CCN 370236
- INTEGRIS Southwest Medical CenterOklahoma City, OK · Acute Care Hospital · CCN 370106
- O U Medical CenterOklahoma City, OK · Acute Care Hospital · CCN 370093
Practice locations
Addresses where Thomas A. Showalter Iii is enrolled with Medicare (CMS data updated 2026-10-02).
- 5915 W Memorial Rd, Suite 200Oklahoma City, OK 73142 (405) 773‑6400
Group practices
Medicare enrollment lists Thomas A. Showalter Iii as a member of this group (CMS data updated 2026-10-02).
- INTEGRIS Ambulatory Care Corporation685 clinicians in the group
Specialties
- Medical Oncologyprimary
Other oncologists in Oklahoma City
Clinicians with the same Medicare primary specialty in Oklahoma City, OK — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Oklahoma State University College Of Osteopathic Medicine |
| Graduation year | 2005 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1780853358 |
| 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