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DR. NIRAJ CHANDRAKANT MAHAJAN M.D.
NPI 1285825331
Internal Medicine in Chicago, IL

Active since August 05, 2007PECOS EnrolledAccepts Medicare Assignment
1653 W CONGRESS PKWY, CHICAGO, IL 60612(312) 942-5000 Get Directions Write a Review

NPPES record last updated: November 4, 2021. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Niraj Chandrakant Mahajan M.d. NPPES

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

DR. NIRAJ CHANDRAKANT MAHAJAN M.D. (NPI 1285825331) is an individual internal medicine provider in Chicago, Illinois, licensed in Illinois (36114440) and active in the NPI registry since August 2007. He is enrolled in Medicare PECOS and is a graduate of Other (1999).

NPPES Registry Identity

NPI1285825331
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. NIRAJ CHANDRAKANT MAHAJANCredential: M.D.
Location Address1653 W CONGRESS PKWYChicago, IL 60612-3833
Mailing Address1448 W Montrose Ave, Apt 2wChicago, IL 60613-5460
Phone(312) 942-5000
Sole ProprietorYes
Medical School CMSOtherGraduated 1999
Enumeration DateAugust 5, 2007
Last NPPES UpdateNovember 4, 2021
NPPES CertifiedNovember 4, 2021
✔ NPI 1285825331 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in IL · 36114440
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.
1653 W CONGRESS PKWY, Chicago, IL 60612
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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

Dr. Niraj Chandrakant 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 ID446391213
PECOS Enrollment IDI20100114000411
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60612 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
$138.86 typical visit price
range $60.08 – $183.39
Typical copayment $34.71 (range $15.02 – $45.84)
Most-billed visit code 99204
Established Patient
$105.70 typical visit price
range $18.97 – $148.12
Typical copayment $26.42 (range $4.74 – $37.03)
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.

DR. SARAH ELIZABETH RIMAR M.D.
Internal Medicine
1653 W CONGRESS PKWY
CHICAGO, IL 60612
Cook County (312) 942-5000
KAITLIN ROBLING MD
Radiology (Diagnostic Radiology)
1653 W CONGRESS PKWY
CHICAGO, IL 60612
Cook County (312) 942-5000
LAUREN ELIZABETH ARSENAULT MD
Radiology (Diagnostic Radiology)
1653 W CONGRESS PKWY
CHICAGO, IL 60612
Cook County (312) 942-5781
ALEX MICHAEL JAMES
Student in an Organized Health Care Education/Training Program
1653 W CONGRESS PKWY
CHICAGO, IL 60612
Cook County (888) 352-7874
WERNER MEIER M.D.
Pediatrics (Neonatal-Perinatal Medicine)
1653 W CONGRESS PKWY
CHICAGO, IL 60612
Cook County (312) 942-7154
UNIVERSITY PATHOLOGISTS P C
Pathology (Anatomic Pathology & Clinical Pathology)
1653 W CONGRESS PKWY
CHICAGO, IL 60612
Cook County (312) 942-5700
RUSH UNIVERSITY MEDICAL CENTER
Clinical Medical Laboratory
1653 W CONGRESS PKWY, ROOM 1188-JELKE
CHICAGO, IL 60612
Cook County (312) 942-2054
DR. PATOULA PANAGOS-BILLIRIS MD
Pediatrics (Neonatal-Perinatal Medicine)
1653 W CONGRESS PKWY, 3 PAVILLION
CHICAGO, IL 60612
Cook County (312) 942-3306

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 Niraj Mahajan's NPI number?

The NPI number for Niraj Mahajan is 1285825331. It was assigned to this individual provider in the NPPES registry on August 5, 2007.

Where is Niraj Mahajan located?

Niraj Mahajan practices at 1653 W Congress Pkwy, Chicago, IL 60612. The listed phone number is (312) 942-5000.

What is Niraj Mahajan's specialty?

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

Is Niraj Mahajan enrolled in Medicare?

Yes. Niraj 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.

When was this NPI record last updated?

The NPPES record for Niraj Mahajan was last updated on November 4, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.