MIHIR MAJMUNDAR M.D.
NPI 1417932955
Specialist in Oak Lawn, IL

Q: What is Mihir Majmundar's NPI number?

The NPI number for Mihir Majmundar is 1417932955. It was assigned to this individual provider in the NPPES registry on December 7, 2005.

Q: What is Mihir Majmundar's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Q: When was this NPI record last updated?

The NPPES record for Mihir Majmundar was last updated on April 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.

Active since December 07, 2005PECOS EnrolledAccepts Medicare Assignment

9921 SOUTHWEST HWY, OAK LAWN, IL 60453(708) 499-5678(708) 499-5685 Get Directions Write a Review

NPPES record last updated: April 2, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Apr 2, 2025, Dec 26, 2024 (2 updates tracked since 2024).

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About Mihir Majmundar M.d. NPPES

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

MIHIR MAJMUNDAR M.D. (NPI 1417932955) is an individual specialist in Oak Lawn, Illinois, licensed in Illinois (036-088879) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS, is affiliated with Advocate Christ Hospital & Medical Center, and maintains a secondary practice location in Yuma.

NPPES Registry Identity

NPI1417932955

Entity TypeIndividualMale

Primary Taxonomy174400000X

Provider Legal NameMIHIR MAJMUNDARCredential: M.D.

Location Address9921 SOUTHWEST HWYOak Lawn, IL 60453-3767

Mailing Address9921 Southwest HwyOak Lawn, IL 60453-3767 · (708) 499-5678 · Fax (708) 499-5685

Phone(708) 499-5678

Fax(708) 499-5685

Sole ProprietorNo

Medical School CMSOtherGraduated 1991

Enumeration DateDecember 7, 2005

Last NPPES UpdateApril 2, 20252 updates tracked since enumeration

NPPES CertifiedApril 2, 2025

✔ NPI 1417932955 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySpecialistOther Service Providers

Taxonomy Code174400000X

License✔ Licensed in IL · 036-088879

Definition

An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

Also ListedInternal Medicine · GastroenterologyTaxonomy 207RG0100X · License 75757 (AZ)

9921 SOUTHWEST HWY, Oak Lawn, IL 60453

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Secondary Practice Location 1

Location 11390 W 16th StYuma, AZ 85364-4430 · Phone (928) 344-4325

Other Identifiers 2

Medicaid036088879IL

Other1622260IL · Bcbs Il

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mihir Majmundar 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 ID143115386

PECOS Enrollment IDI20040223000362

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.

Medicare Billing Reassignments

Medicare enrollment records show Mihir Majmundar reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Mihir Majmundar Mdsc

15 mi

Gastroenterology

4849 W FULLERTON AVE
Chicago, IL 60639

Reassigned Medicare billing, Illinois enrollment

NPI 1982173381 (630) 952-1400

Gi Partners Of Illinois, PLLC

42 mi

Gastroenterology

1880 W WINCHESTER RD, #201
Libertyville, IL 60048

Reassigned Medicare billing, Illinois enrollment
74 clinicians in this Medicare group

NPI 1548613995 (847) 247-0187

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 7

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

43 services36 patients

Biopsy of large bowel using a flexible endoscope 45380

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

34 services34 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

28 services28 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

25 services25 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

23 services22 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

21 services20 patients

Hospital Affiliations CMS Care Compare

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

Advocate Christ Hospital & Medical Center

Acute Care Hospitals · Oak Lawn, IL

2/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number140208

Location4440 W 95th StreetOak Lawn, IL 60453 · Cook County

Emergency services Birthing friendly

Other Providers at the Same Location NPPES 19

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

VINCENT MUSCARELLO MD

Internal Medicine (Gastroenterology)