Mark Nasr Youssef, M.D.
Internal Medicine Physician · Cincinnati, OH
Mark Nasr Youssef, M.D. is an internal medicine physician with a practice address in Cincinnati, Ohio, and NPI 1508203209, issued on Jun 4, 2013. Check the license (Ohio 35.125383, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Mark Nasr Youssef
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 35.125383 OH
19488 NH
Self-reported in NPPES; status is on the state search - Practice location
- 1508 John Street, Cincinnati, OH 45214
- Phone
- (513) 598-3900
- Enumerated
- Jun 4, 2013
- Record last updated
- Sep 11, 2025
- Fax
- (513) 598-3919
- Medicaid ID
- 3117394 NH
- Medicare enrollment
- Enrolled (PECOS I20151006000819); accepts Medicare assignment
- Medical or professional school
- University Of Louisville School Of Medicine, 2013
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 5,277 in Ohio → Look up another NPI →
Verify Mark Nasr Youssef in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35.125383Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% fewer Medicare Part D claims than the average internal medicine physician in 2024
971 Medicare Part D claims for 118 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Memantine Hcl210 claims
- Topiramate82 claims
- Naratriptan Hcl69 claims
- Nortriptyline Hcl61 claims
- Gabapentin57 claims
- Propranolol Hcl Er56 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 practice group's MIPS final score for 2023 (Medicare payment program): 76.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $4,595.94
44 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Mercy Health Physicians Cincinnati LLCCincinnati, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Nasr Youssef among 5,277 internal medicine physician records in Ohio
Mark Nasr Youssef, M.D. is one of 5,277 internal medicine physician records with a practice address in Ohio. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 65% of them.
- NPI issued2013 · 65% of these records are older, 32% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2013 · median 2006 among the 3,414 with a school on file
- Record last updated2025 · 58% 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 Ohio practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
566 internal medicine physician records list a practice address in Cincinnati
They are 566 of the 31,362 NPPES records with a practice address in Cincinnati, and 5,277 internal medicine physician records in Ohio.
All 5,277 in Ohio → Every provider in Cincinnati → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Shazia Chaudhry, M.D.Cincinnati, OH 452151336115039
- Charles Eger, M.DCincinnati, OH 452151629032925
- Lisa Fioretti, MDCincinnati, OH 452131548792252
- Natalie Jacobs, M.D.Cincinnati, OH 452131508000498
- Jennifer JonesCincinnati, OH 452131952005449
- Christopher Martindale, MDCincinnati, OH 452131114422581
- Theodore Marty, MDCincinnati, OH 452151477517118
- Renate Thomas, MDCincinnati, OH 452151457389124
Common questions
What is Mark Nasr Youssef, M.D.'s NPI number?
Mark Nasr Youssef, M.D.'s National Provider Identifier (NPI) is 1508203209, issued on Jun 4, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Mark Nasr Youssef, M.D. located?
The NPPES record lists a practice address at 1508 John Street, Cincinnati, OH, 45214. Phone: (513) 598-3900. Providers update this record themselves, so call before visiting.
How can I verify Mark Nasr Youssef, M.D.'s license?
NPPES lists Ohio license number 35.125383, as entered by the provider. Search the State Medical Board of Ohio at https://elicense.ohio.gov/oh_verifylicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark Nasr Youssef, M.D. prescribe under Medicare Part D?
In 2024, Mark Nasr Youssef, M.D. had 971 Medicare Part D claims for 118 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Mark Nasr Youssef, M.D.'s MIPS final score?
The 2023 MIPS final score is 76.8 of 100, reported for the practice group. 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.