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NILESH MAHAJAN M.D.
NPI 1568195865
Internal Medicine in Tulsa, OK

Active since July 05, 2022PECOS EnrolledAccepts Medicare Assignment
1923 S UTICA AVE, TULSA, OK 74104(918) 744-3131 Get Directions Write a Review

NPPES record last updated: July 18, 2025. Verified against the NPPES registry weekly; last sync: October 04, 2026.

Record update history: Feb 9, 2023, Jul 5, 2022 (2 updates tracked since 2022).

About Nilesh Mahajan M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

NILESH MAHAJAN M.D. (NPI 1568195865) is an individual internal medicine provider in Tulsa, Oklahoma, licensed in Oklahoma (44996) and active in the NPI registry since July 2022. He is enrolled in Medicare PECOS, is affiliated with Ascension St John Jane Phillips, and is a graduate of Other (2021).

NPPES Registry Identity

NPI1568195865
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameNILESH MAHAJANCredential: M.D.
Location Address1923 S UTICA AVETulsa, OK 74104-6520
Mailing Address1923 S Utica AveTulsa, OK 74104-6520 · (918) 744-3131
Phone(918) 744-3131
Sole ProprietorNo
Medical School CMSOtherGraduated 2021
Enumeration DateJuly 5, 2022
Last NPPES UpdateJuly 18, 20252 updates tracked since enumeration
NPPES CertifiedJuly 18, 2025
✔ NPI 1568195865 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in OK · 44996
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
1923 S UTICA AVE, Tulsa, OK 74104
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Nilesh Mahajan M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID446751887
PECOS Enrollment IDI20250828001956
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Ascension St John Jane Phillips

Acute Care Hospitals · Bartlesville, OK
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number370018
Location3500 East Frank Phillips BoulevardBartlesville, OK 74006 · Washington County
Emergency services Birthing friendly

Ascension St John Medical Center

Acute Care Hospitals · Tulsa, OK
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number370114
Location1923 South Utica AvenueTulsa, OK 74104 · Tulsa County
Emergency services Birthing friendly

Ascension St John Broken Arrow

Acute Care Hospitals · Broken Arrow, OK
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number370235
Location1000 West Boise CircleBroken Arrow, OK 74012 · Tulsa County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 74104 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$123.06 typical visit price
range $53.00 – $162.61
Typical copayment $30.76 (range $13.25 – $40.65)
Most-billed visit code 99204
Established Patient
$94.27 typical visit price
range $16.68 – $132.40
Typical copayment $23.56 (range $4.17 – $33.10)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

AALOK DEEP BISHWAS MD
Internal Medicine
1923 S UTICA AVE
TULSA, OK 74104
Tulsa County (845) 420-0558
WILLIAM FREDERICK FITTER M.D.
Pathology (Anatomic Pathology & Clinical Pathology)
1923 S UTICA AVE
TULSA, OK 74104
Tulsa County (918) 744-2553
ST JOHN URGENT CARE CLINICS INC
Clinic/Center (Urgent Care)
1923 S UTICA AVE, DAVIS TOWER 200
TULSA, OK 74104
Tulsa County (918) 744-2345
MEGGIE FINLEY PHARMD
Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
1923 S UTICA AVE
TULSA, OK 74104
Tulsa County (918) 102-0057
STEPHANIE CAY HOLT M.D.
Pathology (Anatomic Pathology & Clinical Pathology)
1923 S UTICA AVE
TULSA, OK 74104
Tulsa County (918) 744-2553
ROBERT BLANKENSHIP MD
Thoracic Surgery (Cardiothoracic Vascular Surgery)
1923 S UTICA AVE
TULSA, OK 74104
Tulsa County (918) 712-3366
CHRISTOPHER THOMAS WARD CRNA
Nurse Anesthetist, Certified Registered
1923 S UTICA AVE
TULSA, OK 74104
Tulsa County (918) 744-2362
LINDSEY WEDLAKE APRN
Nurse Practitioner
1923 S UTICA AVE
TULSA, OK 74104
Tulsa County (918) 744-3131

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Nilesh Mahajan's NPI number?

The NPI number for Nilesh Mahajan is 1568195865. It was assigned to this individual provider in the NPPES registry on July 5, 2022.

Where is Nilesh Mahajan located?

Nilesh Mahajan practices at 1923 S Utica Ave, Tulsa, OK 74104. The listed phone number is (918) 744-3131.

What is Nilesh Mahajan's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Nilesh Mahajan enrolled in Medicare?

Yes. Nilesh Mahajan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Nilesh Mahajan affiliated with any hospitals?

According to CMS data, Nilesh Mahajan is affiliated with Ascension St John Jane Phillips, Ascension St John Medical Center and Ascension St John Broken Arrow.

When was this NPI record last updated?

The NPPES record for Nilesh Mahajan was last updated on July 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.