Mahum Mirza, DO
Rheumatology Physician · Westmont, IL
Mahum Mirza, DO is a rheumatology physician with a practice address in Westmont, Illinois, and NPI 1992333686, issued on Mar 30, 2020. Check the license (Illinois 036-162479, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Mahum Mirza
- Credential
- DO
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License numbers
- 036-162479 IL
125.075884 IL
Self-reported in NPPES; status is on the state search - Practice location
- 801 N Cass Ave Ste 150, Westmont, IL 60559
- Phone
- (630) 268-0200
- Enumerated
- Mar 30, 2020
- Record last updated
- May 18, 2026
- Fax
- (630) 963-6579
- Medicare enrollment
- Enrolled (PECOS I20250918001965); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 340 in Illinois → Look up another NPI →
Also registered at 801 N Cass Ave Ste 150
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Anna Stanislaus, M.D.Rheumatology Physician1699921353
Verify Mahum Mirza 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 036-162479Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average rheumatology physician in 2024
212 Medicare Part D claims for 45 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Prednisone66 claims
- Actemra Actpen23 claims
- Methotrexate22 claims
- Pantoprazole Sodium15 claims
- Hydroxychloroquine Sulfate14 claims
- Allopurinol12 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.
Bills Medicare through one group practice
- Dupage Medical Group LtdWestmont, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mahum Mirza among 340 rheumatology physician records in Illinois
Mahum Mirza, DO is one of 340 rheumatology physician records with a practice address in Illinois. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 93% of them.
- NPI issued2020 · 93% of these records are older, 5% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2020 · median 2003 among the 244 with a school on file
- Record last updated2026 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in Illinois
There are 340 rheumatology physician records in Illinois.
All 340 in Illinois → Every provider in Westmont → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Carmelita Colbert, MDWestmont, IL 605591720206790
- Lee Graham, M.D.Westmont, IL 605591619932027
- Albert Iammartino, M.D.Westmont, IL 605591699730184
- Darcy Majka, MDWestmont, IL 605591831206580
- Nicole Richman, M.D.Westmont, IL 605591841451747
- Anna Stanislaus, M.D.Westmont, IL 605591699921353
- Angelica Gierut, M.D.Warrenville, IL 605551518115252
- Brinda Joshi, DONaperville, IL 605631134390750
Common questions
What is Mahum Mirza, DO's NPI number?
Mahum Mirza, DO's National Provider Identifier (NPI) is 1992333686, issued on Mar 30, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Mahum Mirza, DO located?
The NPPES record lists a practice address at 801 N Cass Ave Ste 150, Westmont, IL, 60559. Phone: (630) 268-0200. Providers update this record themselves, so call before visiting.
How can I verify Mahum Mirza, DO's license?
NPPES lists Illinois license number 036-162479, 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 Mahum Mirza, DO prescribe under Medicare Part D?
In 2024, Mahum Mirza, DO had 212 Medicare Part D claims for 45 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
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.