Quick answers
- Which hospitals does Alan W. Keister work at?
- Medicare's official clinician data lists Alan W. Keister at 4 hospitals: BSA Hospital, Northwest Texas Hospital, Quail Creek Surgical Hospital and University Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Alan W. Keister see patients?
- Medicare's clinician data lists 2 practice locations, including Amarillo, TX. Call before your visit to confirm the address.
- What is Alan W. Keister's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Alan W. Keister accept Medicare assignment?
- Yes. Medicare's clinician data says Alan W. Keister 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 Alan W. Keister offer telehealth?
- Medicare's clinician data says Alan W. Keister offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Alan W. Keister?
- (806) 358-8331, as listed in official Medicare / NPI Registry data.
- What is Alan W. Keister's NPI number?
- 1255373635. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Alan W. Keister works
Medicare's Facility Affiliation Data lists Alan W. Keister at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- BSA HospitalAmarillo, TX · Acute Care Hospital · CCN 450231
- Northwest Texas HospitalAmarillo, TX · Acute Care Hospital · CCN 450209
- Quail Creek Surgical HospitalAmarillo, TX · Acute Care Hospital · CCN 450875
- University Medical CenterLubbock, TX · Acute Care Hospital · CCN 450686
Practice locations
Addresses where Alan W. Keister is enrolled with Medicare (CMS data updated 2026-10-02).
- 1900 Coulter Dr, Suite OAmarillo, TX 79106 (806) 358‑8331
- 9092 Westgate Pkwy WAmarillo, TX 79124 (806) 358‑8331
Group practices
Medicare enrollment lists Alan W. Keister as a member of this group (CMS data updated 2026-10-02).
- Amarillo Medical Specialists, LLP42 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Amarillo
Clinicians with the same Medicare primary specialty in Amarillo, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Southwestern Medical School At Dallas |
| Graduation year | 1996 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1255373635 |
| 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