Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Mark Nasr Youssef, MD

Individual provider Hospitalist Physician · NPI 1508203209

Dr. Mark Nasr Youssef, MD is an Internal Medicine in Cincinnati, Ohio. Graduated from University of Louisville School of Medicine in 2013, 13 years ago. Practices with Mercy Health Physicians Cincinnati LLC, a 192-clinician group and accepts Medicare assignment. Licensed in New Hampshire and Ohio.

Years since qualifying
13
Trained at
University of Louisville School of Medicine
Licensed in
NH, OH
In the registry since
2013
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1508 John St Ste B
Cincinnati, OH 45214-4104
Phone: (513) 598-3900
Fax: (513) 598-3919
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 35.125383 (OH)
Hospitalist Physician Taxonomy 208M00000X · Licence 35.125383 (OH)
Internal Medicine Physician Taxonomy 207R00000X · Licence 19488 (NH)

Record details

NPI number1508203209
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 4, 2013
Last updated in NPPESSeptember 11, 2025
Certification dateSeptember 11, 2025
Mailing address1508 John Street, Ste B, Cincinnati, OH 45214-4104

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Also practisesHOSPITALIST
Medical schoolUNIVERSITY OF LOUISVILLE SCHOOL OF MEDICINE
Graduated 2013 (13 years in practice)
Group practice Mercy Health Physicians Cincinnati Llc — 192 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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