Sameer Mirza Mazhar, M.D.
Gastroenterology Physician · Aurora, IL
Sameer Mirza Mazhar, M.D. is a gastroenterology physician with a practice address in Aurora, Illinois, and NPI 1497932461, issued on Jan 22, 2008. Check the license (Illinois 036-114152, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Sameer Mirza Mazhar
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License numbers
- 036-114152 IL
95975 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1221 N Highland Ave, Aurora, IL 60506
- Phone
- (630) 859-8700
- Enumerated
- Jan 22, 2008
- Record last updated
- Nov 18, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 036-114152 IL
- Medicare enrollment
- Enrolled (PECOS I20060228000737); accepts Medicare assignment
- Medical or professional school
- Northwestern University Feinberg Medical School, 2002
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 887 in Illinois → Look up another NPI →
Also registered at 1221 N Highland Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lawrence Alberti, MDPulmonary Disease Physician1720015431
- Rovena AliajNurse Practitioner1871333120
- Seth Alper, M.D.Diagnostic Radiology Physician1689993768
- Mahmoud Amarna, MDPulmonary Disease Physician1538321518
- Jeffrey Anderson, PTPhysical Therapist1578598512
- Deborah Andras, PTPhysical Therapist1336246743
Verify Sameer Mirza Mazhar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036-114152Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
13% fewer Medicare Part D claims than the average gastroenterology physician in 2024
707 Medicare Part D claims for 296 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.
Most prescribed
- Omeprazole174 claims
- Pantoprazole Sodium110 claims
- Peg 3350-Electrolyte91 claims
- Gavilyte-G52 claims
- Ursodiol44 claims
- Peg-3350 And Electrolytes32 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 94.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $240.95
2 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Northwestern Medical Faculty FoundationWinfield, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sameer Mirza Mazhar among 887 gastroenterology physician records in Illinois
Sameer Mirza Mazhar, M.D. is one of 887 gastroenterology physician records with a practice address in Illinois. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 55% of them.
- NPI issued2008 · 55% of these records are older, 39% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2002 · median 2003 among the 643 with a school on file
- Record last updated2021 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Illinois
There are 887 gastroenterology physician records in Illinois.
All 887 in Illinois → Every provider in Aurora → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Rachna Arora, M.D.Aurora, IL 605061114187200
- Amar Bansal, M.D.Aurora, IL 605061710929716
- Ernesto Godoy-Romero, MDAurora, IL 605061124051198
- Ibrahim Habib, M.D.Aurora, IL 605061740589969
- Raza Hamdani, M. D.Aurora, IL 605061144207218
- Richard Hsu, M.D.Aurora, IL 605061679521827
- Kabir Julka, M.D.Aurora, IL 605061548473143
- Janaki PatelAurora, IL 605061205251113
Common questions
What is Sameer Mirza Mazhar, M.D.'s NPI number?
Sameer Mirza Mazhar, M.D.'s National Provider Identifier (NPI) is 1497932461, issued on Jan 22, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Sameer Mirza Mazhar, M.D. located?
The NPPES record lists a practice address at 1221 N Highland Ave, Aurora, IL, 60506. Phone: (630) 859-8700. Providers update this record themselves, so call before visiting.
How can I verify Sameer Mirza Mazhar, M.D.'s license?
NPPES lists Illinois license number 036-114152, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Sameer Mirza Mazhar, M.D. prescribe under Medicare Part D?
In 2024, Sameer Mirza Mazhar, M.D. had 707 Medicare Part D claims for 296 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Sameer Mirza Mazhar, M.D.'s MIPS final score?
The 2023 MIPS final score is 94.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.