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Internal Medicine

Kelly E. Natarajan, DO

Works at hospitals in Tulsa, OK · Owasso, OK · Oklahoma

Summary

Kelly E. Natarajan, DO (Internal Medicine) is listed by Medicare at 2 hospitals in Tulsa, OK and Owasso, OK. NPI 1346780988. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Kelly E. Natarajan, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Internal MedicinePrimary specialty
YesAccepts Medicare assignment
9Years since medical school (graduated 2017)
Lake Erie College Of Osteopathic Medicine, ErieMedical school
FemaleGender (as listed)
Usacs Observation Medicine Services of Oklahoma, LLCGroup practice

Quick answers

Which hospitals does Kelly E. Natarajan work at?
Medicare's official clinician data lists Kelly E. Natarajan at 2 hospitals: Ascension St John Medical Center and St John Owasso. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Kelly E. Natarajan see patients?
Medicare's clinician data lists 2 practice locations, including Tulsa, OK and Muskogee, OK. Call before your visit to confirm the address.
What is Kelly E. Natarajan's specialty?
Medicare lists Internal Medicine as the primary specialty.
Does Kelly E. Natarajan accept Medicare assignment?
Yes. Medicare's clinician data says Kelly E. Natarajan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Kelly E. Natarajan?
(918) 744-3131, as listed in official Medicare / NPI Registry data.
What is Kelly E. Natarajan's NPI number?
1346780988. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Kelly E. Natarajan works

Medicare's Facility Affiliation Data lists Kelly E. Natarajan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Kelly E. Natarajan is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Kelly E. Natarajan as a member of this group (CMS data updated 2026-10-02).

  • Usacs Observation Medicine Services of Oklahoma, LLC210 clinicians in the group

Specialties

Find other Internal Medicine doctors in Oklahoma →

Other internal medicine doctors in Tulsa

Clinicians with the same Medicare primary specialty in Tulsa, OK — not a recommendation.

All internal medicine doctors in Tulsa →

Clinician information

CredentialDO
Medical schoolLake Erie College Of Osteopathic Medicine, Erie
Graduation year2017
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1346780988
CorrectionsReport 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

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians