Quick answers
- Which hospitals does Grant K. Dewitt work at?
- Medicare's official clinician data lists Grant K. Dewitt at 5 hospitals: Alliancehealth Durant, Duncan Regional Hospital, Inc, INTEGRIS Health Ponca City, St Mary's Regional Medical Center and Stillwater Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Grant K. Dewitt see patients?
- Medicare's clinician data lists 4 practice locations, including Stillwater, OK, Ponca City, OK and Duncan, OK. Call before your visit to confirm the address.
- What is Grant K. Dewitt's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Grant K. Dewitt accept Medicare assignment?
- Yes. Medicare's clinician data says Grant K. Dewitt 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 Grant K. Dewitt?
- (405) 372-1480, as listed in official Medicare / NPI Registry data.
- What is Grant K. Dewitt's NPI number?
- 1124798491. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Grant K. Dewitt works
Medicare's Facility Affiliation Data lists Grant K. Dewitt at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Alliancehealth DurantDurant, OK · Acute Care Hospital · CCN 370014
- Duncan Regional Hospital, IncDuncan, OK · Acute Care Hospital · CCN 370023
- INTEGRIS Health Ponca CityPonca City, OK · Acute Care Hospital · CCN 370006
- St Mary's Regional Medical CenterEnid, OK · Acute Care Hospital · CCN 370026
- Stillwater Medical CenterStillwater, OK · Acute Care Hospital · CCN 370049
Practice locations
Addresses where Grant K. Dewitt is enrolled with Medicare (CMS data updated 2026-10-02).
- 1323 NW 6th AveStillwater, OK 74074 (405) 372‑1480
- 1900 N 14th StPonca City, OK 74601 (580) 765‑3321
- 2621 N Whisenant DrDuncan, OK 73533 (580) 252‑5300
- 305 S 5th St, St Marys Regional Medical CenterEnid, OK 73701 (580) 233‑6100
Group practices
Medicare enrollment lists Grant K. Dewitt as a member of these groups (CMS data updated 2026-10-02).
- South Central Emergency Services, PC55 clinicians in the group
- Ehp of Ponca City LLC20 clinicians in the group
- Hospitalist Medicine Physicians of Oklahoma TCS LLC18 clinicians in the group
- Centurion Emergency Partners, LLC14 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Stillwater
Clinicians with the same Medicare primary specialty in Stillwater, OK — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Oklahoma State University College Of Osteopathic Medicine |
| Graduation year | 2023 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1124798491 |
| 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