Isaac Raymond Thomason, M.D.
NPI 1649282542ActiveIndividual· Internal Medicine, Transplant Hepatology· Salt Lake City, UT
Internal Medicine, Transplant Hepatology (M.D.) in Salt Lake City, Utah, trained at University of Texas Southwestern Medical School at Dallas (class of 1976). Medicare paid $1,561 for services to 210 patients in 2024. Madrigal Pharmaceuticals was the largest of 2 companies reporting payments in 2025, $295.56 in all, mostly food and beverage.
Overview
| NPI | 1649282542 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 12, 2006 |
| Last updated in NPPES | Dec 20, 2021 |
| Certified by provider | Dec 20, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Transplant Hepatology Primary | 207RT0003X | 161210-1205 | UT |
| Internal Medicine | 207R00000X | 161210-1205 | UT |
| Internal Medicine, Gastroenterology | 207RG0100X | 161210-1205 | UT |
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 - Gastroenterology (UT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 210 |
|---|---|
| Services billed | 214 across 1 procedure code |
| Paid by Medicare | $1,561 |
Education and affiliations
| Medical school | University of Texas Southwestern Medical School at Dallas |
|---|---|
| Graduation year | 1976 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical group
- University of Utah Adult ServicesFarmington, UT · 1,788 clinicians
Hospital affiliation
- University of Utah Hospital and ClinicsSalt Lake City, UT
Industry payments (Open Payments)
- 2025$295.56 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Madrigal Pharmaceuticals | $170.56 | 2 |
| Abbvie Inc. | $125.00 | 1 |
What the 2025 payments were for
- Food and Beverage$295.56 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Transplant Hepatology providers in Salt Lake City
- 1497989719
- 1619909314
All Internal Medicine, Transplant Hepatology providers in Utah →