Wahid Kassar, M.D.
Endocrinology, Diabetes & Metabolism Physician · Chicago, IL
Wahid Kassar, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Chicago, Illinois, and NPI 1144203647, issued on Nov 29, 2005. Check the license (Illinois 036107989, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Wahid Kassar
- Credential
- M.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- 036107989 IL
Self-reported in NPPES; status is on the state search - Practice location
- 7447 W Talcott Ave Ste 467, Chicago, IL 60631
- Phone
- (630) 866-3636
- Enumerated
- Nov 29, 2005
- Record last updated
- Oct 2, 2025
- Fax
- (773) 692-2035
- Medicaid ID
- 036107989 IL
- Medicare enrollment
- Enrolled (PECOS I20040310001340); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 436 in Illinois → Look up another NPI →
Also registered at 7447 W Talcott Ave Ste 467
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tonya Gollahalli, PA-CPhysician Assistant1588102305
Verify Wahid Kassar 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 036107989Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% more Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
4,339 Medicare Part D claims for 662 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 69% of claims.
Most prescribed
- Ozempic375 claims
- Mounjaro306 claims
- Metformin Hcl302 claims
- Nano 2nd Gen Pen Needle298 claims
- Jardiance254 claims
- Levothyroxine Sodium178 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.
The MIPS final score for 2023 (Medicare payment program): 15 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $108,489.15
334 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. 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 2 group practices
- Northshore Health Centers IncHammond, IN
- Wahid Kassar MD LtdChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Wahid Kassar among 436 endocrinology, diabetes & metabolism physician records in Illinois
Wahid Kassar, M.D. is one of 436 endocrinology, diabetes & metabolism physician records with a practice address in Illinois. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated1987 · median 2006 among the 295 with a school on file
- Record last updated2025 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in Illinois
There are 436 endocrinology, diabetes & metabolism physician records in Illinois.
All 436 in Illinois → Every provider in Chicago → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Alan Reich, MDChicago, IL 606311932207487
- Axa Maria Yosmar Anaya Noubleau, M.D.Chicago, IL 606321932518750
- A. Mathew, M.D.Chicago, IL 606321992817191
- Andree De Bustros, M.D.Chicago, IL 606291932108545
- Mahwash Siddiqui, M.DChicago, IL 606291396291183
- Rebecca Brown, M.D.Chicago, IL 606371336193671
- Maria Cardenas, MDChicago, IL 606251154408375
- Ronald CohenChicago, IL 606371437211463
Common questions
What is Wahid Kassar, M.D.'s NPI number?
Wahid Kassar, M.D.'s National Provider Identifier (NPI) is 1144203647, issued on Nov 29, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Wahid Kassar, M.D. located?
The NPPES record lists a practice address at 7447 W Talcott Ave Ste 467, Chicago, IL, 60631. Phone: (630) 866-3636. Providers update this record themselves, so call before visiting.
How can I verify Wahid Kassar, M.D.'s license?
NPPES lists Illinois license number 036107989, 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 Wahid Kassar, M.D. prescribe under Medicare Part D?
In 2024, Wahid Kassar, M.D. had 4,339 Medicare Part D claims for 662 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. Part D covers Medicare prescriptions only.
What is Wahid Kassar, M.D.'s MIPS final score?
The 2023 MIPS final score is 15 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.