Zachary Griffin, DO
NPI 1922685049ActiveIndividual· Internal Medicine· Tulsa, OK
Internal Medicine (DO) in Tulsa, Oklahoma, trained at Oklahoma State University College of Osteopathic Medicine (class of 2021). Their prescriptions cost Medicare Part D more than their services did: $335,819 for 412 claims, against $12,174 paid for services in 2024. Viiv Healthcare Company was the largest of 23 companies reporting payments in 2025, $1,577 in all, mostly food and beverage.
Overview
| NPI | 1922685049 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Mar 25, 2021 |
| Last updated in NPPES | May 14, 2025 |
| Certified by provider | May 14, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 7768 | OK |
| General Practice | 208D00000X | 7768 | OK |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Internal Medicine (OK) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 97 |
|---|---|
| Services billed | 149 across 19 procedure codes |
| Paid by Medicare | $12,174 |
Part D prescriptions in 2024
| Prescriptions (claims) | 412 · 663 30-day fills |
|---|---|
| Patients | 131 |
| Total drug cost | $335,819 |
| Generic share | 64% of claims |
Education and affiliations
| Medical school | Oklahoma State University College of Osteopathic Medicine |
|---|---|
| Graduation year | 2021 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | General Practice |
| Telehealth | Offers telehealth |
Medical groups
- Oklahoma State UniversityTulsa, OK · 108 clinicians
- Osumc Professional Services LLCTulsa, OK · 21 clinicians
Hospital affiliations
- Cleveland Area HospitalCleveland, OK
- Oklahoma State University Medical CenterTulsa, OK
Industry payments (Open Payments)
- 2025$1,577 · 67 payments from 23 companies
- 2024$317.76 · 11 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Viiv Healthcare Company | $304.82 | 4 |
| Abbvie Inc. | $233.05 | 14 |
| Pfizer Inc. | $145.32 | 8 |
| Astrazeneca Pharmaceuticals LP | $137.75 | 9 |
| Emd Serono, Inc. | $125.13 | 4 |
What the 2025 payments were for
- Food and Beverage$1,577 · 67 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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