Clayton Wayne Flanary, DO
NPI 1740215680ActiveIndividual· Internal Medicine· Tulsa, OK
Internal Medicine (DO) with Creek Nation Hospital and Clinics, practicing in Tulsa, Oklahoma. Their prescriptions cost Medicare Part D more than their services did: $1,182,513 for 13,784 claims, against $21,394 paid for services in 2024. Lilly USA, LLC was the largest of 3 companies reporting payments in 2025, $79.09 in all, mostly food and beverage. Lists Council Oak Comprehensive Healthcare and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1740215680 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Jul 11, 2006 |
| Last updated in NPPES | Sep 8, 2025 |
| Certified by provider | Sep 8, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 3190 | OK |
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 (OK); Practitioner - General Practice (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 230 |
|---|---|
| Services billed | 602 across 29 procedure codes |
| Paid by Medicare | $21,394 |
Part D prescriptions in 2024
| Prescriptions (claims) | 13,784 · 28,214 30-day fills |
|---|---|
| Patients | 813 |
| Total drug cost | $1,182,513 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 1993 |
|---|---|
| Medicare specialty | General Practice |
| Telehealth | Offers telehealth |
Medical group
- Creek Nation Hospital and ClinicsOkmulgee, OK · 365 clinicians
Hospital affiliations
- Council Oak Comprehensive HealthcareTulsa, OK
- Creek Nation Community HospitalOkemah, OK
- Hillcrest Medical CenterTulsa, OK
- Saint Francis Hospital, IncTulsa, OK
Other facilities
- Fountain View Manor, IncNursing home · Henryetta, OK
Industry payments (Open Payments)
- 2025$79.09 · 5 payments from 3 companies
- 2024$248.55 · 16 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $45.93 | 3 |
| Pfizer Inc. | $17.50 | 1 |
| Exact Sciences Corporation | $15.66 | 1 |
What the 2025 payments were for
- Food and Beverage$79.09 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other internal medicine physicians in Tulsa
- 1003203662
- 1013974757
- 1033111547
- 1033262712
- 1033648951
- 1043445620
- 1043898562
- 1053529891
- 1063562981
- 1073053468
- 1073545885
- 1073592945
All 373 internal medicine physicians in Tulsa · All internal medicine physicians in Oklahoma