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

Nilesh Mahajan, MD

Individual provider Internal Medicine Physician · NPI 1568195865

Nilesh Mahajan, MD is an Internal Medicine in Tulsa, Oklahoma. Qualified in 2021, 5 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
5
Licensed in
OK
In the registry since
2022
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

1923 S Utica Ave
Tulsa, OK 74104-6520
Phone: (918) 744-3131
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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 44996 (OK)

Record details

NPI number1568195865
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 5, 2022
Last updated in NPPESJuly 18, 2025
Certification dateJuly 18, 2025

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2021 (5 years in practice)
Group practice Usacs Observation Medicine Services Of Oklahoma, Llc — 200 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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