David Ryan Markes, DO
NPI 1154985869ActiveIndividual· Family Medicine· Tahlequah, OK
Family Medicine (DO) in Tahlequah, Oklahoma, trained at Oklahoma State University College of Osteopathic Medicine (class of 2019). Their prescriptions cost Medicare Part D more than their services did: $373,211 for 4,071 claims, against $15,764 paid for services in 2024.
Overview
| NPI | 1154985869 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Apr 28, 2019 |
| Last updated in NPPES | Nov 21, 2023 |
| Certified by provider | Nov 21, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 7070 | 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 - Family Practice (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 109 |
|---|---|
| Services billed | 389 across 14 procedure codes |
| Paid by Medicare | $15,764 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,071 · 5,777 30-day fills |
|---|---|
| Patients | 170 |
| Total drug cost | $373,211 |
| Generic share | 78% of claims |
Education and affiliations
| Medical school | Oklahoma State University College of Osteopathic Medicine |
|---|---|
| Graduation year | 2019 |
| Medicare specialty | Family Practice |
Medical group
- Cherokee NationTahlequah, OK · 449 clinicians
Hospital affiliation
- Cherokee Nation W W Hastings Indian HospitalTahlequah, OK
Other facilities
- Cherokee Nation Home Health Services, Inc.Home health agency · Tahlequah, OK
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 49 family medicine physicians in Tahlequah · All family medicine physicians in Oklahoma