Thomas Dee Callahan, M.D.
NPI 1043328123ActiveIndividual· Family Medicine· St George, UT
Family Medicine (M.D.) in St George, Utah, trained at University of Utah School of Medicine (class of 1975). Their prescriptions cost Medicare Part D more than their services did: $575,844 for 8,166 claims, against $92,128 paid for services in 2024. Pfizer Inc. was the largest of 17 companies reporting payments in 2025, $563.89 in all, mostly food and beverage.
Overview
| NPI | 1043328123 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Aug 28, 2006 |
| Last updated in NPPES | Jan 8, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 159420-1205 | UT |
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 - Family Practice (UT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 331 |
|---|---|
| Services billed | 2,333 across 45 procedure codes |
| Paid by Medicare | $92,128 |
Part D prescriptions in 2024
| Prescriptions (claims) | 8,166 · 16,611 30-day fills |
|---|---|
| Patients | 563 |
| Total drug cost | $575,844 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | University of Utah School of Medicine |
|---|---|
| Graduation year | 1975 |
| Medicare specialty | Family Practice |
Medical group
- Callahan Clinic, PCSt George, UT · 4 clinicians
Hospital affiliations
- Mesa View Regional HospitalMesquite, NV
- St. George Regional HospitalSt George, UT
Other facilities
- Applegate HomecareHome health agency · South Ogden, UT
- Intermountain Health Home Health - St. GeorgeHome health agency · St George, UT
- Zion's Way Home HealthHome health agency · St. George, UT
- Applegate Hospice St. GeorgeHospice · St. George, UT
Industry payments (Open Payments)
- 2025$563.89 · 29 payments from 17 companies
- 2024$536.90 · 32 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $84.45 | 5 |
| Amgen Inc. | $63.54 | 3 |
| Boston Scientific Corporation | $61.72 | 3 |
| Novartis Pharmaceuticals Corporation | $49.45 | 2 |
| Otsuka America Pharmaceutical, Inc. | $36.72 | 2 |
What the 2025 payments were for
- Food and Beverage$563.89 · 29 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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