Quick answers
- Which hospitals does John D. Williams work at?
- Medicare's official clinician data lists John D. Williams at 2 hospitals: Norman Regional and Stillwater Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John D. Williams see patients?
- Medicare's clinician data lists 1 practice location in Stillwater, OK. Call before your visit to confirm the address.
- What is John D. Williams's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does John D. Williams accept Medicare assignment?
- Yes. Medicare's clinician data says John D. Williams 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.
- Does John D. Williams offer telehealth?
- Medicare's clinician data says John D. Williams offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for John D. Williams?
- (405) 377-8000, as listed in official Medicare / NPI Registry data.
- What is John D. Williams's NPI number?
- 1528068426. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John D. Williams works
Medicare's Facility Affiliation Data lists John D. Williams at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Norman RegionalNorman, OK · Acute Care Hospital · CCN 370008
- Stillwater Medical CenterStillwater, OK · Acute Care Hospital · CCN 370049
Practice locations
Addresses where John D. Williams is enrolled with Medicare (CMS data updated 2026-10-02).
- 608 S Hester StStillwater, OK 74074 (405) 377‑8000
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Stillwater
Clinicians with the same Medicare primary specialty in Stillwater, OK — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Oklahoma College Of Medicine |
| Graduation year | 1981 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1528068426 |
| 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