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

Elwood Fray Williams, MD

Individual provider Pulmonary Disease Physician · NPI 1366542896

Elwood Fray Williams, MD practises Sleep Medicine in Oklahoma City, Oklahoma. Graduated from University of Mississippi School of Medicine in 1984, 42 years ago. Practices with Oklahoma Sleep Institute Clinic Okc LLC Osi Clinic, a 6-clinician group and accepts Medicare assignment. Licensed in Oklahoma.

Years since qualifying
42
Trained at
University of Mississippi School of Medicine
Licensed in
OK
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

5401 N Portland Ave Ste 510
Oklahoma City, OK 73112-1670 Not confirmed with CMS for 11 years — call before visiting
Phone: (405) 604-4210
Fax: (405) 604-4241
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Sleep Medicine (Internal Medicine) Physician (primary) Taxonomy 207RS0012X · Licence 17492 (OK)
Pulmonary Disease Physician Taxonomy 207RP1001X · Licence 17492 (OK)

Record details

NPI number1366542896
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 24, 2006
Last updated in NPPESAugust 25, 2015

Medicare enrollment

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

Medicare specialtySLEEP MEDICINE
Also practisesINTERNAL MEDICINE, PULMONARY DISEASE
Medical schoolUNIVERSITY OF MISSISSIPPI SCHOOL OF MEDICINE
Graduated 1984 (42 years in practice)
Group practice Oklahoma Sleep Institute Clinic Okc Llc Osi Clinic — 6 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 patients388
Services billed 544 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.

Colleagues at Oklahoma Sleep Institute Clinic Okc LLC Osi Clinic

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 6 clinicians in the practice; 3 are shown here.

Other providers in Oklahoma City