Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

David Ryan Markes, DO

Individual provider Family Medicine Physician · NPI 1154985869

David Ryan Markes, DO is registered under Family Practice in Tahlequah, Oklahoma. Graduated from Oklahoma State University College of Osteopathic Medicine in 2019, 7 years ago. Practices with Cherokee Nation, a 448-clinician group and accepts Medicare assignment. Licensed in Oklahoma.

Years since qualifying
7
Trained at
Oklahoma State University College of Osteopathic Medicine
Licensed in
OK
In the registry since
2019
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

100 S Bliss Ave
Tahlequah, OK 74464-2512
Phone: (918) 458-3100
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 7070 (OK)

Record details

NPI number1154985869
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedApril 28, 2019
Last updated in NPPESNovember 21, 2023
Certification dateNovember 21, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolOKLAHOMA STATE UNIVERSITY COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 2019 (7 years in practice)
Group practice Cherokee Nation — 448 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients109
Services billed 389 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Cherokee Nation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 448 clinicians in the practice; 12 are shown here.

Other providers in Tahlequah