Quick answers
- Does Nilesh Mahajan accept Medicare assignment?
- Yes. Medicare's clinician data says Nilesh Mahajan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Nilesh Mahajan's NPI number?
- 1568195865. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Nilesh Mahajan works
Medicare's Facility Affiliation Data lists Nilesh Mahajan at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Ascension St John Broken ArrowBroken Arrow, OK · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 370235
- Ascension St John Jane PhillipsBartlesville, OK · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 370018
- Ascension St John Medical CenterTulsa, OK · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 370114
Practice locations
Addresses where Nilesh Mahajan is enrolled with Medicare (CMS data updated October 2, 2026).
- 1923 S Utica AveTulsa, OK 74104 (918) 744‑3131
Group practices
Medicare enrollment lists Nilesh Mahajan as a member of this group (CMS data updated October 2, 2026).
- Usacs Observation Medicine Services of Oklahoma, LLC210 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Tulsa
Clinicians with the same Medicare primary specialty in Tulsa, OK — not a recommendation.
Other clinicians in Usacs Observation Medicine Services of Oklahoma, LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2021 (5 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1568195865 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians