Alan Wade Keister, M.D.
NPI 1255373635ActiveIndividual· Internal Medicine· Amarillo, TX
Internal Medicine (M.D.) in Amarillo, Texas, trained at University of Texas Southwestern Medical School at Dallas (class of 1996). Their prescriptions cost Medicare Part D more than their services did: $1,764,873 for 18,845 claims, against $795,114 paid for services in 2024. Novo Nordisk Inc was the largest of 13 companies reporting payments in 2025, $1,303 in all, mostly food and beverage.
Overview
| NPI | 1255373635 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 12, 2006 |
| Last updated in NPPES | Sep 25, 2025 |
| Certified by provider | Sep 25, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | K9315 | TX |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,078 |
|---|---|
| Services billed | 28,333 across 149 procedure codes |
| Paid by Medicare | $795,114 |
Part D prescriptions in 2024
| Prescriptions (claims) | 18,845 · 38,373 30-day fills |
|---|---|
| Patients | 1,265 |
| Total drug cost | $1,764,873 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | University of Texas Southwestern Medical School at Dallas |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Amarillo Medical Specialists,llpAmarillo, TX · 42 clinicians
Hospital affiliations
- Bsa HospitalAmarillo, TX
- Northwest Texas HospitalAmarillo, TX
- Quail Creek Surgical HospitalAmarillo, TX
- University Medical CenterLubbock, TX
Other facilities
- Accentcare HealthHome health agency · Amarillo, TX
- Bsa Compassion Home CareHome health agency · Amarillo, TX
- Centerwell Home HealthHome health agency · Amarillo, TX
- High Plains Senior Care, LLCHome health agency · Amarillo, TX
Industry payments (Open Payments)
- 2025$1,303 · 79 payments from 13 companies
- 2024$1,732 · 110 payments from 16 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $265.02 | 16 |
| Astrazeneca Pharmaceuticals LP | $218.65 | 14 |
| Pfizer Inc. | $173.94 | 13 |
| Lilly USA, LLC | $140.52 | 9 |
| Phathom Pharmaceuticals, Inc. | $128.54 | 7 |
What the 2025 payments were for
- Food and Beverage$1,303 · 79 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 105 internal medicine physicians in Amarillo · All internal medicine physicians in Texas