Thomas Callahan, D.O.
NPI 1164861027ActiveIndividual· Family Medicine· Phoenix, AZ
Family Medicine (D.O.) with Callahan Clinic, PC, practicing in Phoenix, Arizona. Their prescriptions cost Medicare Part D more than their services did: $1,122,687 for 12,142 claims, against $136,482 paid for services in 2024. Abbvie Inc. was the largest of 21 companies reporting payments in 2025, $1,048 in all, mostly food and beverage. Lists St. George Regional Hospital as a hospital affiliation.
Overview
| NPI | 1164861027 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | Yes |
| NPI issued | Jun 24, 2013 |
| Last updated in NPPES | Apr 12, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | R2288 | AZ |
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 | 498 |
|---|---|
| Services billed | 2,894 across 40 procedure codes |
| Paid by Medicare | $136,482 |
Part D prescriptions in 2024
| Prescriptions (claims) | 12,142 · 26,568 30-day fills |
|---|---|
| Patients | 974 |
| Total drug cost | $1,122,687 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 2013 |
|---|---|
| Medicare specialty | Family Practice |
Medical group
- Callahan Clinic, PCSt George, UT · 4 clinicians
Hospital affiliation
- St. George Regional HospitalSt George, UT
Other facilities
- Applegate HomecareHome health agency · South Ogden, UT
- Enhabit Home Health of Southern UtahHome health agency · St George, UT
- Intermountain Health Home Health - St. GeorgeHome health agency · St George, UT
- Applegate Hospice St. GeorgeHospice · St. George, UT
Industry payments (Open Payments)
- 2025$1,048 · 57 payments from 21 companies
- 2024$1,160 · 64 payments from 20 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $345.29 | 23 |
| Astrazeneca Pharmaceuticals LP | $72.70 | 4 |
| Lilly USA, LLC | $70.98 | 4 |
| Lundbeck LLC | $60.66 | 3 |
| Teva Pharmaceuticals USA, Inc. | $55.22 | 2 |
What the 2025 payments were for
- Food and Beverage$1,048 · 57 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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