Tahir Mahmood, MD
Internal Medicine Physician · Lombard, IL
Tahir Mahmood, MD is an internal medicine physician with a practice address in Lombard, Illinois, and NPI 1598849895, issued on Oct 24, 2006. Check the license (Illinois 036108276, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Tahir Mahmood
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036108276 IL
Self-reported in NPPES; status is on the state search - Practice location
- 2500 S Highland Ave Ste 230, Lombard, IL 60148
- Phone
- (630) 429-9000
- Enumerated
- Oct 24, 2006
- Record last updated
- Mar 15, 2024
- Fax
- (630) 429-9060
- Medicaid ID
- 036108276 IL
- Medicare enrollment
- Enrolled (PECOS I20070403000076); 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 2500 S Highland Ave Ste 230
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Caseylin Cheng, PA-CMedical Physician Assistant1205557378
- Hiral PatelFamily Nurse Practitioner1619553856
- Sarangi Patel, MSN, APRN, FNP-CFamily Nurse Practitioner1801401088
- Tejalkumari Patel, APNFamily Nurse Practitioner1306479449
Verify Tahir 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 036108276Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
66% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,074 Medicare Part D claims for 76 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium119 claims
- Levothyroxine Sodium74 claims
- Lisinopril67 claims
- Metoprolol Tartrate58 claims
- Simvastatin54 claims
- Budesonide Dr52 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 2 group practices
- Mercy Health System CorporationWoodstock, IL
- Primary Care ServicesLombard, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tahir Mahmood among 7,238 internal medicine physician records in Illinois
Tahir 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 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 61% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated1991 · median 2003 among the 3,580 with a school on file
- Record last updated2024 · 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).
38 internal medicine physician records list a practice address in Lombard
They are 38 of the 1,347 NPPES records with a practice address in Lombard, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Lombard → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Kris Alloju, MDLombard, IL 601481760478671
- Julia Andreoni, M.D.Lombard, IL 601481184601148
- Carl Barsanti, M.D.Lombard, IL 601481861450637
- Ojash Bhagwakar, MDLombard, IL 601481740255298
- David Dungan, MDLombard, IL 601481558336057
- Catherine Grotelueschen, M.D.Lombard, IL 601481346208428
- Jacques Jentel, M.D.Lombard, IL 601481336115583
- Kathleen Kicsak, MDLombard, IL 601481235105396
Common questions
What is Tahir Mahmood, MD's NPI number?
Tahir Mahmood, MD's National Provider Identifier (NPI) is 1598849895, issued on Oct 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Tahir Mahmood, MD located?
The NPPES record lists a practice address at 2500 S Highland Ave Ste 230, Lombard, IL, 60148. Phone: (630) 429-9000. Providers update this record themselves, so call before visiting.
How can I verify Tahir Mahmood, MD's license?
NPPES lists Illinois license number 036108276, 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 Tahir Mahmood, MD prescribe under Medicare Part D?
In 2024, Tahir Mahmood, MD had 1,074 Medicare Part D claims for 76 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.