Sameer Ansar, M.D.
Endocrinology, Diabetes & Metabolism Physician · Rockford, IL
Sameer Ansar, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Rockford, Illinois, and NPI 1942485735, issued on Dec 31, 2007. Check the license (Illinois 036-119752, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Sameer Ansar
- Credential
- M.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License numbers
- 036-119752 IL
036119752 IL
40260 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 5668 E State St, Rockford, IL 61108
- Phone
- (815) 381-7790
- Enumerated
- Dec 31, 2007
- Record last updated
- Sep 13, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100423000450); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 5668 E State St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Sameer Ansar 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 036-119752Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.5 times the Medicare Part D claims of the average endocrinology, diabetes & metabolism physician in 2024
9,084 Medicare Part D claims for 990 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 49% of claims.
Most prescribed
- Levothyroxine Sodium1,473 claims
- Metformin Hcl488 claims
- Ozempic478 claims
- Lantus Solostar409 claims
- Mounjaro314 claims
- Jardiance276 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: $95.11
3 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 5,661 providers of this specialty with any payment received $5,742.15 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 one group practice
- Osf Multi-Specialty GroupRockford, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Illinois
There are 436 endocrinology, diabetes & metabolism physician records in Illinois.
Other endocrinology, diabetes & metabolism physician records in Illinois
- Maha Abboud, MD FACEMelrose Park, IL1346208956
- Sara Abdelaziz, MDChicago, IL1598258089
- Jumana Abdelkarim, MDSpringfield, IL1154815363
- Toufic Abdo, MDChampaign, IL1962497032
- Caroline Abe, MD, MPHChicago, IL1316574122
- Issa Abedmahmoud, MDHerrin, IL1528042975
- Makarem Abulimon, M.D.Springfield, IL1699207381
- Lily Agrawal, M.D.Oakbrook Terrace, IL1922110394
- Maria Aguilera Astudillo, MDSycamore, IL1164040887
- Ayesha Akbar, M.D.Frankfort, IL1407809064
Common questions
What is Sameer Ansar, M.D.'s NPI number?
Sameer Ansar, M.D.'s National Provider Identifier (NPI) is 1942485735, issued on Dec 31, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Sameer Ansar, M.D. located?
The NPPES record lists a practice address at 5668 E State St, Rockford, IL, 61108. Phone: (815) 381-7790. Providers update this record themselves, so call before visiting.
How can I verify Sameer Ansar, M.D.'s license?
NPPES lists Illinois license number 036-119752, 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 Sameer Ansar, M.D. prescribe under Medicare Part D?
In 2024, Sameer Ansar, M.D. had 9,084 Medicare Part D claims for 990 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.