Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Roy Mack Greenway Jr., MD, FACS

Individual provider Orthopaedic Surgery Physician · NPI 1639219108

Roy Mack Greenway Jr., MD, FACS is a General Surgery in Oklahoma City, Oklahoma. Graduated from University of Oklahoma College of Medicine in 2004, 22 years ago. Practices with Chickasaw Nation Division of Health, a 243-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Oklahoma.

Years since qualifying
22
Trained at
University of Oklahoma College of Medicine
Licensed in
OK
In the registry since
2007
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
FACS — Fellow of the American College of Surgeons
A surgeon admitted as a fellow of the ACS.

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Practice location Address checks out

401 SW 80th St Ste 101
Oklahoma City, OK 73139-8123
Phone: (405) 601-5169
Fax: (405) 601-9095
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1800 W 1st St, Elk City, OK 73644-3133 — (580) 225-2517

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence 23986 (OK)
Orthopaedic Surgery Physician Taxonomy 207X00000X · Licence 23986 (OK)

Record details

NPI number1639219108
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , FACS
Sole proprietorNo
NPI enumeratedFebruary 7, 2007
Last updated in NPPESNovember 11, 2022
Certification dateSeptember 1, 2022

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Medical schoolUNIVERSITY OF OKLAHOMA COLLEGE OF MEDICINE
Graduated 2004 (22 years in practice)
Group practice Chickasaw Nation Division Of Health — 243 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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