Mahmoud Yassin-Kassab, M.D.
Internal Medicine Physician · Indianapolis, IN
Mahmoud Yassin-Kassab, M.D. is an internal medicine physician with a practice address in Indianapolis, Indiana, and NPI 1144281486, issued on Mar 28, 2006. Check the license (Indiana IN01057007, as entered in NPPES) on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.
- Name
- Mahmoud Yassin-Kassab
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- IN01057007 IN
Self-reported in NPPES; status is on the state search - Practice location
- 1400 N Ritter Ave, Indianapolis, IN 46219
- Phone
- (317) 355-9370
- Enumerated
- Mar 28, 2006
- Record last updated
- Jun 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (317) 621-5678
- Medicaid ID
- 200425720 IN
- Medicare enrollment
- Enrolled (PECOS I20050902000532); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,109 in Indiana → Look up another NPI →
Also registered at 1400 N Ritter Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mahmoud Yassin-Kassab in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of Indiana
Search for license IN01057007Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.4 times the Medicare Part D claims of the average internal medicine physician in 2024
13,939 Medicare Part D claims for 474 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 31 claims were for opioids.
Most prescribed
- Atorvastatin Calcium1,034 claims
- Amlodipine Besylate829 claims
- Gabapentin569 claims
- Metformin Hcl484 claims
- Lisinopril424 claims
- Tamsulosin Hcl414 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
- Community Physicians OF Indiana IncIndianapolis, IN
- Westview Delivery System IncFishers, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mahmoud Yassin-Kassab among 2,109 internal medicine physician records in Indiana
Mahmoud Yassin-Kassab, M.D. is one of 2,109 internal medicine physician records with a practice address in Indiana. 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 2006, is newer than 13% of them.
- NPI issued2006 · 13% of these records are older, 54% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1989 · median 2005 among the 1,448 with a school on file
- Record last updated2021 · 43% 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 Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
699 internal medicine physician records list a practice address in Indianapolis
They are 699 of the 30,493 NPPES records with a practice address in Indianapolis, and 2,109 internal medicine physician records in Indiana.
All 2,109 in Indiana → Every provider in Indianapolis → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Philip Bemiller, M.D.Indianapolis, IN 462191023435245
- Tyler Blakley, M.D.Indianapolis, IN 462191346506540
- David Cherro, M.D.Indianapolis, IN 462191114458692
- Kimberly Gatzimos, MDIndianapolis, IN 462191174510127
- Hongwei Liu, M.D.Indianapolis, IN 462191215340898
- Tony Mercho, M.D.Indianapolis, IN 462191942287099
- Enanore Okumagba, M.D.Indianapolis, IN 462191588991855
- Guy Perry, M.D.Indianapolis, IN 462191134222177
Common questions
What is Mahmoud Yassin-Kassab, M.D.'s NPI number?
Mahmoud Yassin-Kassab, M.D.'s National Provider Identifier (NPI) is 1144281486, issued on Mar 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mahmoud Yassin-Kassab, M.D. located?
The NPPES record lists a practice address at 1400 N Ritter Ave, Indianapolis, IN, 46219. Phone: (317) 355-9370. Providers update this record themselves, so call before visiting.
How can I verify Mahmoud Yassin-Kassab, M.D.'s license?
NPPES lists Indiana license number IN01057007, as entered by the provider. Search the Medical Licensing Board of Indiana at https://www.in.gov/pla/professions/physicians-home/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mahmoud Yassin-Kassab, M.D. prescribe under Medicare Part D?
In 2024, Mahmoud Yassin-Kassab, M.D. had 13,939 Medicare Part D claims for 474 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.