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

Dr. David Nelson Gilbert, MD

Individual provider Internal Medicine Physician · NPI 1225176779

Dr. David Nelson Gilbert, MD practises Internal Medicine in Tulsa, Oklahoma. Graduated from University of Oklahoma College of Medicine in 2005, 21 years ago. Practices with Usacs Observation Medicine Services of Oklahoma, LLC, a 200-clinician group and accepts Medicare assignment. Licensed in Oklahoma.

Years since qualifying
21
Trained at
University of Oklahoma College of Medicine
Licensed in
OK
In the registry since
2007
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

4502 E 41st St
Tulsa, OK 74135-2553 Not confirmed with CMS for 11 years — call before visiting
Phone: (800) 435-9845
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 24621 (OK)

Record details

NPI number1225176779
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedFebruary 4, 2007
Last updated in NPPESApril 21, 2015

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF OKLAHOMA COLLEGE OF MEDICINE
Graduated 2005 (21 years in practice)
Group practice Usacs Observation Medicine Services Of Oklahoma, Llc — 200 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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 patients315
Services billed 956 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. Those with a page here are linked.

Colleagues at Usacs Observation Medicine Services of Oklahoma, LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 200 clinicians in the practice; 12 are shown here.

Other providers in Tulsa