Dr. Mihir Majmundar, MD
- Medicare services, 2024
- 194
- Medicare patients, 2024
- 143
- Part D claims, 2024
- 241
- Hospital affiliations
- 1
- Industry payments
- $4,552
- Practice address
- 9921 Southwest Highway, Oak Lawn, IL 60453
- Practice phone
- Call (708) 425-2552
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Oak Lawn Endoscopy Center
Surgery Center - Medicare-Certified · Oak Lawn, Illinois
Find Dr. Majmundar's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Mihir Majmundar is a gastroenterologist in Oak Lawn, Illinois
Dr. Majmundar practices at Oak Lawn Endoscopy Center in Oak Lawn, Illinois.
Dr. Majmundar's NPI, 1417932955, was assigned on December 7, 2005. Dr. Majmundar holds Arizona license 75757.
- NPI
- 1417932955NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0143115386
- NPI enumeration date
- December 7, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (708) 425-2552
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mihir Majmundar practices at Oak Lawn Endoscopy Center in Oak Lawn, Illinois
Dr. Majmundar's primary practice is Oak Lawn Endoscopy Center, at 9921 Southwest Highway, Oak Lawn, IL 60453. The practice phone is (708) 425-2552.
- Oak Lawn Endoscopy Center9921 Southwest Highway, Oak Lawn, IL 60453Phone(708) 425-2552
Source: Dmand AI Affiliation Data
Dr. Mihir Majmundar is affiliated with 4 sites of care and 3 medical groups
Dr. Majmundar's primary practice is Oak Lawn Endoscopy Center in Oak Lawn, Illinois. Dr. Majmundar is also affiliated with Advocate Christ Medical Center. The medical group on file is GI Partners of Illinois. Dmand AI also links Dr. Majmundar to 2 more medical groups, 1 physician office and 1 ambulatory surgery center, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mihir Majmundar's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Majmundar practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Oak Lawn Endoscopy Center | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mihir Majmundar is one of 771 gastroenterologists in Illinois
Gastroenterology is Dr. Majmundar's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dmand AI has Dr. Majmundar's licenses on file in 2 states: Arizona and Illinois.
Specialties and state licenses
- Gastroenterology, ArizonaPrimary
- Specialist, Illinois
Gastroenterologists near Dr. Majmundar
Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Mihir Majmundar billed Medicare for 194 services in 2024
CMS data shows 194 Medicare services from Dr. Majmundar across 7 procedure codes in 2024, for 143 Medicare patients. Medicare paid $21,065 for them.
Dr. Majmundar's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 962024: 11722%
- Surgery
- 2023: 992024: 7722%
Where Dr. Majmundar's Medicare services took place, 2024
- In an office6835%
- In a facility12665%
Dr. Majmundar compared with the Illinois median for gastroenterologists, 2024
- Dr. Majmundar
- Illinois median
- Medicare services
- 194vs 49861% below
- Medicare patients
- 143vs 30753% below
- Part D claims
- 206vs 37044% below
Medians across 757 gastroenterologists in Illinois with Dmand AI profiles that report each measure.
Dr. Majmundar's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Majmundar and other gastroenterologists in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mihir Majmundar treated 143 Medicare patients in 2024, average age 73
CMS counts 143 Medicare patients who saw Dr. Majmundar in 2024. The largest group is 65 to 74, with 87 patients. 75% of them have high blood pressure, and 70% have high cholesterol. 27% are also on Medicaid. Their average risk score is 1.70, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Majmundar's median patient age at 71, with 57% women.
Dr. Majmundar's Medicare patients by age, 2024
Dr. Majmundar's Medicare patients by sex, 2024
- Women8862%
- Men5538%
Chronic conditions among Dr. Majmundar's Medicare patients, 2024
- High blood pressure75%
- High cholesterol70%
- Arthritis43%
- Diabetes37%
- Chronic kidney disease36%
- Ischemic heart disease32%
- Heart failure27%
- COPD24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Majmundar's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women57%
- Men42%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mihir Majmundar wrote 241 Medicare Part D claims in 2024
In 2024, Dr. Majmundar wrote 241 Medicare Part D claims for 85 patients. 94% of them were for generic drugs. CMS names the drug for 206 of them, across 6 drugs with 11 or more claims each, at $1,872 in total drug cost. In 2023, CMS named 187 claims across 7 drugs.
Dr. Majmundar's Part D claims by kind of drug, 2024
- Generic227 claims94%
- Brand-name14 claims6%
Dr. Majmundar's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Majmundar's Part D claims, 2024
- Antibiotics55%133 of 241 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1872024: 20610%
Drugs named by CMS: 6 in 2024, 7 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Mihir Majmundar ranks in the 73rd percentile for colonoscopy in Medicare
Dr. Majmundar accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 75 procedures of colonoscopy by Dr. Majmundar, more than 73% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Majmundar ranks in Medicare procedure volume
- Colonoscopy
- 73rd percentile75 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 58th percentile36 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Mihir Majmundar received $4,552 in industry payments from 2016 to 2025
CMS Open Payments shows 138 general payments to Dr. Majmundar from 30 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 85% of the total. Abbvie Inc. paid the most, $752.
General payments to Dr. Majmundar by program year, 2016 to 2025
General payments to Dr. Majmundar by kind, 2016 to 2025
- Food and beverage$3,88285%
- Travel and lodging$63314%
- Education$381%
Companies that paid Dr. Majmundar the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Mihir Majmundar's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Mihir Majmundar
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Mihir Majmundar's NPI number?
Dr. Mihir Majmundar's NPI number is 1417932955. It was assigned on December 7, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Mihir Majmundar?
Dr. Mihir Majmundar is a gastroenterologist in Oak Lawn, Illinois. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Mihir Majmundar practice?
Dr. Majmundar practices at 9921 Southwest Highway, Oak Lawn, IL 60453. Dr. Majmundar's primary practice is Oak Lawn Endoscopy Center in Oak Lawn, Illinois. Dmand AI also links Dr. Majmundar to 2 medical groups, 1 physician office and 1 ambulatory surgery center.
What is Dr. Mihir Majmundar's office phone number?
The practice phone on file for Dr. Majmundar is (708) 425-2552.
What is Dr. Mihir Majmundar's medical license number?
Dr. Majmundar holds Arizona license 75757, one of the licenses on file in 2 states.
Which states has Dr. Mihir Majmundar been licensed in?
Dmand AI has state licenses on file for Dr. Majmundar in Arizona and Illinois.
Which hospitals is Dr. Mihir Majmundar affiliated with?
Dr. Majmundar is affiliated with Advocate Christ Medical Center.
What medical group is Dr. Mihir Majmundar part of?
Dr. Majmundar is linked to GI Partners of Illinois. Dmand AI links Dr. Majmundar to 2 more medical groups.
Does Dr. Mihir Majmundar accept Medicare?
Yes. CMS data shows Dr. Majmundar billed Medicare for 194 services in 2024, and Dr. Majmundar accepts Medicare assignment.
How many Medicare patients does Dr. Mihir Majmundar see?
CMS counts 143 Medicare patients who saw Dr. Majmundar in 2024, with an average age of 73.
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What services does Dr. Mihir Majmundar bill to Medicare?
In 2024, Dr. Majmundar's most billed Medicare services were office visit, established patient (99214), surgery: digestive system (45380) and hospital inpatient care (99222).
What drugs does Dr. Mihir Majmundar prescribe most?
In 2024 Medicare Part D data, Dr. Majmundar's most prescribed drugs by claims were Omeprazole, Amoxicillin and Clarithromycin.
Has Dr. Mihir Majmundar received payments from drug or device companies?
CMS Open Payments shows $4,552 in general payments to Dr. Majmundar from 30 companies from 2016 to 2025. The largest total came from Abbvie Inc.
How long has Dr. Mihir Majmundar been practicing?
Dr. Majmundar graduated from medical school in 1991, 35 years ago.
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