Thomas L. Mertz, DO, PHARMD.
NPI 1942495825ActiveIndividual· Allergy & Immunology· Pittsburgh, PA
Allergy & Immunology (DO, PHARMD.) in Pittsburgh, Pennsylvania, trained at Lake Erie College of Osteopathic Medicine, Erie (class of 2004). Their prescriptions cost Medicare Part D more than their services did: $392,215 for 1,591 claims, against $41,874 paid for services in 2024.
Overview
| NPI | 1942495825 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO, PHARMD. |
| Sole proprietor | No |
| NPI issued | Sep 13, 2007 |
| Last updated in NPPES | Jun 5, 2023 |
| Certified by provider | Jun 5, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Allergy & Immunology Primary | 207K00000X | OS015695 | PA |
| Internal Medicine | 207R00000X | 046528 | CT |
| Pediatrics | 208000000X | 046528 | CT |
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 (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 196 |
|---|---|
| Services billed | 3,681 across 22 procedure codes |
| Paid by Medicare | $41,874 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,591 · 2,748 30-day fills |
|---|---|
| Patients | 332 |
| Total drug cost | $392,215 |
| Generic share | 76% of claims |
Education and affiliations
| Medical school | Lake Erie College of Osteopathic Medicine, Erie |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Internal Medicine |
Medical group
- Allergy and Asthma Associates of PittsburghPittsburgh, PA · 2 clinicians
Hospital affiliations
- Upmc PassavantPittsburgh, PA
- Upmc St MargaretPittsburgh, PA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Allergy & Immunology providers in Pittsburgh
- 1821084617
- 1629029186
- 1174875892
- 1548228083
- 1992936611
- 1750373171
- 1386804037
- 1003253477
- 1104039783
- 1477081370
- 1548828973
- 1538157060