Mariam Khan, DO
Internal Medicine Physician · Chicago, IL
Mariam Khan, DO is an internal medicine physician with a practice address in Chicago, Illinois, and NPI 1437851201, issued on Mar 17, 2023. Check the license (Illinois 125084973, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Mariam Khan
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 125084973 IL
Self-reported in NPPES; status is on the state search - Practice location
- 5145 N California Ave, Chicago, IL 60625
- Phone
- (773) 878-8200
- Enumerated
- Mar 17, 2023
- Record last updated
- Jul 1, 2024
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 5145 N California Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mariam Khan 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 125084973Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
23 Medicare Part D claims for 11 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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.
Mariam Khan among 7,238 internal medicine physician records in Illinois
Mariam Khan, DO 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 2023, is newer than 82% of them.
- NPI issued2023 · 82% of these records are older, 13% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- 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).
2,867 internal medicine physician records list a practice address in Chicago
They are 2,867 of the 63,379 NPPES records with a practice address in Chicago, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Chicago → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Zareena Abbas, MDChicago, IL 606251427078872
- Basava Ancha, MDChicago, IL 606251265488647
- Walten Baba, M.DChicago, IL 606251649217985
- Basheeruddin Farooki, MDChicago, IL 606251720038979
- Demetrios Giokaris, MDChicago, IL 606251871501825
- Brijmohan Malani, M.D.Chicago, IL 606251588633192
- Stephen Miff, MDChicago, IL 606251366435901
- Jeffrey Olson, M.D,Chicago, IL 606251952374795
Common questions
What is Mariam Khan, DO's NPI number?
Mariam Khan, DO's National Provider Identifier (NPI) is 1437851201, issued on Mar 17, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Mariam Khan, DO located?
The NPPES record lists a practice address at 5145 N California Ave, Chicago, IL, 60625. Phone: (773) 878-8200. Providers update this record themselves, so call before visiting.
How can I verify Mariam Khan, DO's license?
NPPES lists Illinois license number 125084973, 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 Mariam Khan, DO prescribe under Medicare Part D?
In 2024, Mariam Khan, DO had 23 Medicare Part D claims for 11 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.