Mark D. Davis, PA-C
NPI 1679580435ActiveIndividual· Physician Assistant, Medical· Fort Worth, TX
Physician Assistant, Medical (PA-C) with Texas Oncology PA, practicing in Fort Worth, Texas. Their prescriptions cost Medicare Part D more than their services did: $238,610 for 537 claims, against $61,565 paid for services in 2024. Janssen Biotech, Inc. was the largest of 43 companies reporting payments in 2025, $227,035 in all, mostly speaking and faculty fees. Lists Texas Health Harris Methodist Hospital Southwest F as a hospital affiliation.
Overview
| NPI | 1679580435 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Aug 2, 2006 |
| Last updated in NPPES | Jun 1, 2023 |
| Certified by provider | Jun 1, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant, Medical Primary | 363AM0700X | PA06442 | TX |
| Physician Assistant | 363A00000X | 5601004142 | MI |
| Physician Assistant | 363A00000X | PA06442 | TX |
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 - Physician Assistant (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 278 |
|---|---|
| Services billed | 2,613 across 39 procedure codes |
| Paid by Medicare | $61,565 |
Part D prescriptions in 2024
| Prescriptions (claims) | 537 · 612 30-day fills |
|---|---|
| Patients | 132 |
| Total drug cost | $238,610 |
| Generic share | 92% of claims |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Texas Oncology PAPlano, TX · 1,014 clinicians
Hospital affiliation
- Texas Health Harris Methodist Hospital Southwest FFort Worth, TX
Industry payments (Open Payments)
- 2025$227,035 · 523 payments from 43 companies
- 2024$219,155 · 463 payments from 39 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $44,748 | 79 |
| Jazz Pharmaceuticals Inc. | $38,708 | 91 |
| Sobi, Inc | $34,036 | 57 |
| Glaxosmithkline, LLC. | $32,235 | 43 |
| Geron Corporation | $19,288 | 25 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$148,583 · 66 payments
- Travel and Lodging$55,480 · 226 payments
- Consulting Fee$13,087 · 9 payments
- Food and Beverage$9,524 · 218 payments
- Education$361.91 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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