Thomas Byron Alan, M.D.
NPI 1235115635ActiveIndividual· Internal Medicine· Davis, CA
Internal Medicine (M.D.) in Davis, California, trained at Creighton University School of Medicine (class of 1996). Their prescriptions cost Medicare Part D more than their services did: $790,009 for 6,820 claims, against $78,678 paid for services in 2024.
Overview
| NPI | 1235115635 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Dec 16, 2005 |
| Last updated in NPPES | Jun 12, 2020 |
| Certified by provider | Jun 12, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A85006 | CA |
| Family Medicine | 207Q00000X | A08506 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 642 |
|---|---|
| Services billed | 1,776 across 45 procedure codes |
| Paid by Medicare | $78,678 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,820 · 15,356 30-day fills |
|---|---|
| Patients | 844 |
| Total drug cost | $790,009 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | Creighton University School of Medicine |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Regents of the University of CaliforniaSacramento, CA · 567 clinicians
Hospital affiliations
- Sutter Davis HospitalDavis, CA
- University of California Davis Medical CenterSacramento, CA
Other facilities
- American River Home CareHome health agency · Sacramento, CA
- Sutter Care at HomeHome health agency · Sacramento, CA
- University Retirement Community at DavisNursing home · Davis, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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