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

Individual provider Internal Medicine Physician · NPI 1578589602

George Leonard Marks, MD is an Internal Medicine in Los Angeles, California. Graduated from Perelman School of Med at the University of Pennsylvania in 1976, 50 years ago. Practices as a sole proprietor. Licensed in California.

Years since qualifying
50
Trained at
Perelman School of Med at the University of Pennsylvania
Licensed in
CA
In the registry since
2006
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

866 N Vermont Ave Ste 3
Los Angeles, CA 90029-3587
Phone: (323) 906-0050
Fax: (323) 906-0060
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence C39879 (CA)

Record details

NPI number1578589602
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 14, 2006
Last updated in NPPESJune 20, 2011

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolPERELMAN SCHOOL OF MED AT THE UNIVERSITY OF PENNSYLVANIA
Graduated 1976 (50 years in practice)
Accepts Medicare assignment Not indicated

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