Amit S. Grewal, MD
Geriatric Medicine (Internal Medicine) Physician · Chicago, IL
Amit S. Grewal, MD is a geriatric medicine (internal medicine) physician with a practice address in Chicago, Illinois, and NPI 1164124814, issued on Mar 20, 2023. Check the license (Illinois 036.179109, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Amit S. Grewal
- Credential
- MD
- Primary taxonomy
- Geriatric Medicine (Internal Medicine) Physician 207RG0300X
- License number
- 036.179109 IL
Self-reported in NPPES; status is on the state search - Practice location
- 5841 S Maryland Ave, Chicago, IL 60637
- Phone
- (773) 702-8840
- Enumerated
- Mar 20, 2023
- Record last updated
- May 17, 2026
- Entity
- Type 1 · individual
8 nearest geriatric medicine (internal medicine) physician records → All 179 in Illinois → Look up another NPI →
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Verify Amit S. Grewal 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 036.179109Check 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 geriatric medicine (internal medicine) physician in 2024
59 Medicare Part D claims for 19 beneficiaries, against an average of 4,246 among the 3,116 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.
Amit S. Grewal among 179 geriatric medicine (internal medicine) physician records in Illinois
Amit S. Grewal, MD is one of 179 geriatric medicine (internal medicine) physician records with a practice address in Illinois. 71% 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 95% of them.
- NPI issued2023 · 95% of these records are older, under 1% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileNo · 42% of these records are
- 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 207RG0300X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Geriatric Medicine (Internal Medicine) Physician providers in Illinois
There are 179 geriatric medicine (internal medicine) physician records in Illinois.
All 179 in Illinois → Every provider in Chicago → Geriatric Medicine (Internal Medicine) Physician nationwide →
The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes
- Kellie Campbell, M.D.Chicago, IL 606371720281611
- Lauren GleasonChicago, IL 606371780826560
- Thomas Haferkamp, MDChicago, IL 606371851913503
- Megan Huisingh-ScheetzChicago, IL 606371720273063
- Samantha IngChicago, IL 606371306328661
- Changgi Jung, MDChicago, IL 606371275054082
- Tia KostasChicago, IL 606371174722409
- Patricia Lee, MDChicago, IL 606371811525579
Common questions
What is Amit S. Grewal, MD's NPI number?
Amit S. Grewal, MD's National Provider Identifier (NPI) is 1164124814, issued on Mar 20, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Amit S. Grewal, MD located?
The NPPES record lists a practice address at 5841 S Maryland Ave, Chicago, IL, 60637. Phone: (773) 702-8840. Providers update this record themselves, so call before visiting.
How can I verify Amit S. Grewal, MD's license?
NPPES lists Illinois license number 036.179109, 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 Amit S. Grewal, MD prescribe under Medicare Part D?
In 2024, Amit S. Grewal, MD had 59 Medicare Part D claims for 19 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. 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.