Rizwan Mahmood, MD
Internal Medicine Physician · Downers Grove, IL
Rizwan Mahmood, MD is an internal medicine physician with a practice address in Downers Grove, Illinois, and NPI 1699337683, issued on Jul 1, 2019. Check the license (Illinois 036-162350, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Rizwan Mahmood
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036-162350 IL
Self-reported in NPPES; status is on the state search - Practice location
- 3743 Highland Ave Ste 1001, Downers Grove, IL 60515
- Phone
- (630) 963-9667
- Enumerated
- Jul 1, 2019
- Record last updated
- Jan 28, 2025
- Fax
- (630) 963-9936
- Medicare enrollment
- Enrolled (PECOS I20221205002706); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 3743 Highland Ave Ste 1001
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Robert King, MDInternal Medicine Physician1104892041
- Monica Martin, MDInternal Medicine Physician1881693315
- Michelle Salerno-Shortt, RD,LDN,CDERegistered Dietitian1639233695
- Brian Sklar, M.D.Obstetrics & Gynecology Physician1740270024
- Matthew WilkinsFamily Medicine Physician1912467861
Verify Rizwan Mahmood 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 036-162350Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
49% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,609 Medicare Part D claims for 294 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 42 claims were for opioids.
Most prescribed
- Atorvastatin Calcium95 claims
- Losartan Potassium78 claims
- Amlodipine Besylate59 claims
- Levothyroxine Sodium55 claims
- Tamsulosin Hcl51 claims
- Metformin Hcl48 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.
Industry payments in 2024: $179.53
1 payment: food and beverage; the largest payer was Edwards Lifesciences Corporation. The 50,334 providers of this specialty with any payment received $1,303.06 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 2 group practices
- Advocate Health And Hospitals CorporationDowners Grove, IL
- Renovo Health IncLombard, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rizwan Mahmood among 7,238 internal medicine physician records in Illinois
Rizwan Mahmood, MD is one of 7,238 internal medicine physician records with a practice address in Illinois. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 68% of them.
- NPI issued2019 · 68% of these records are older, 29% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2016 · median 2003 among the 3,580 with a school on file
- Record last updated2025 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
33 internal medicine physician records list a practice address in Downers Grove
They are 33 of the 1,899 NPPES records with a practice address in Downers Grove, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Downers Grove → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Susan Badri, M.D.Downers Grove, IL 605151912985722
- Gigi Ip, MDDowners Grove, IL 605151376519777
- Robert King, MDDowners Grove, IL 605151104892041
- David Labotka, MDDowners Grove, IL 605151205803178
- Barbara Loeb, MDDowners Grove, IL 605151619976396
- Monica Martin, MDDowners Grove, IL 605151881693315
- Richard McPartlin, MDDowners Grove, IL 605151700853140
- Maziyar Mirhosseini, M.D.Downers Grove, IL 605151508870809
Common questions
What is Rizwan Mahmood, MD's NPI number?
Rizwan Mahmood, MD's National Provider Identifier (NPI) is 1699337683, issued on Jul 1, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Rizwan Mahmood, MD located?
The NPPES record lists a practice address at 3743 Highland Ave Ste 1001, Downers Grove, IL, 60515. Phone: (630) 963-9667. Providers update this record themselves, so call before visiting.
How can I verify Rizwan Mahmood, MD's license?
NPPES lists Illinois license number 036-162350, 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 Rizwan Mahmood, MD prescribe under Medicare Part D?
In 2024, Rizwan Mahmood, MD had 1,609 Medicare Part D claims for 294 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.