Quick answers
- Which hospitals does William J. Hayes work at?
- Medicare's official clinician data lists William J. Hayes at 3 hospitals: Baptist Health - Fort Smith, Choctaw Nation Health Services Authority and Mercy Hospital Fort Smith. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William J. Hayes see patients?
- Medicare's clinician data lists 1 practice location in Poteau, OK. Call before your visit to confirm the address.
- What is William J. Hayes's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does William J. Hayes accept Medicare assignment?
- Yes. Medicare's clinician data says William J. Hayes 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 J. Hayes?
- (539) 316-6391, as listed in official Medicare / NPI Registry data.
- What is William J. Hayes's NPI number?
- 1891735098. 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 J. Hayes works
Medicare's Facility Affiliation Data lists William J. Hayes at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Baptist Health - Fort SmithFort Smith, AR · Acute Care Hospital · CCN 040055
- Choctaw Nation Health Services AuthorityTalihina, OK · Acute Care Hospital · CCN 370172
- Mercy Hospital Fort SmithFort Smith, AR · Acute Care Hospital · CCN 040062
Practice locations
Addresses where William J. Hayes is enrolled with Medicare (CMS data updated 2026-10-02).
- 109 Kerr BlvdPoteau, OK 74953 (539) 316‑6391
Group practices
Medicare enrollment lists William J. Hayes as a member of this group (CMS data updated 2026-10-02).
- Choctaw Nation of Oklahoma267 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Poteau
Clinicians with the same Medicare primary specialty in Poteau, OK — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Arkansas College Of Medicine |
| Graduation year | 2002 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1891735098 |
| 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