Quick answers
- Which hospitals does William K. Gray work at?
- Medicare's official clinician data lists William K. Gray at 5 hospitals: Council Oak Comprehensive Healthcare, Hillcrest Hospital Claremore, Hillcrest Hospital Henryetta, Hillcrest Hospital Pryor and Hillcrest Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William K. Gray see patients?
- Medicare's clinician data lists 3 practice locations, including Joplin, MO, Tulsa, OK and Claremore, OK. Call before your visit to confirm the address.
- What is William K. Gray's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does William K. Gray accept Medicare assignment?
- Yes. Medicare's clinician data says William K. Gray 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 William K. Gray?
- (417) 556-2300, as listed in official Medicare / NPI Registry data.
- What is William K. Gray's NPI number?
- 1891786000. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where William K. Gray works
Medicare's Facility Affiliation Data lists William K. Gray at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Council Oak Comprehensive HealthcareTulsa, OK · Acute Care Hospital · CCN 370244
- Hillcrest Hospital ClaremoreClaremore, OK · Acute Care Hospital · CCN 370039
- Hillcrest Hospital HenryettaHenryetta, OK · Acute Care Hospital · CCN 370183
- Hillcrest Hospital PryorPryor, OK · Acute Care Hospital · CCN 370015
- Hillcrest Medical CenterTulsa, OK · Acute Care Hospital · CCN 370001
Practice locations
Addresses where William K. Gray is enrolled with Medicare (CMS data updated 2026-10-02).
- 100 Mercy Way, Mercy Clinic Emergency MedicineJoplin, MO 64804 (417) 556‑2300
- 10109 E 79th StTulsa, OK 74133 (918) 756‑4333
- 1202 N Muskogee PlClaremore, OK 74017 (918) 341‑2556
Group practices
Medicare enrollment lists William K. Gray as a member of these groups (CMS data updated 2026-10-02).
- Creek Nation Hospital and Clinics365 clinicians in the group
- Green Country Emergency Physicians Group of Tulsa, PLLC113 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Joplin
Clinicians with the same Medicare primary specialty in Joplin, MO — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Oklahoma College Of Medicine |
| Graduation year | 1982 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1891786000 |
| 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