About
George Cotsarelis, MD chairs the Department of Dermatology at Penn Medicine and holds the Milton Bixler Hartzell Professorship of Dermatology. He trained entirely within the Penn Medicine system, completing two residencies and a fellowship at the University of Pennsylvania Health System.
He earned his medical degree from the University of Pennsylvania School of Medicine. His first residency took place at Geisinger Community Medical Center before he returned to Penn for additional training. Dr. Cotsarelis sees patients age 18 and up at Penn Dermatology Radnor and a second location.
Education & Training
Medical School
University of Pennsylvania School of Medicine
Residency
Geisinger Community Medical Center; University of Pennsylvania Health System
Fellowship
University of Pennsylvania Health System
Conditions Treated
Who is Dr. Cotsarelis right for?
Dr. Cotsarelis is a strong fit for adults 18 and older seeking dermatologic care. Patients looking for a physician with deep institutional expertise in dermatology will find his background compelling. He sees patients at Penn Dermatology Radnor and a second location, offering convenient access in the Philadelphia region.
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Frequently Asked Questions
Dr. Cotsarelis specializes in dermatology. He chairs the Department of Dermatology at Penn Medicine and holds the Milton Bixler Hartzell Professorship of Dermatology.
Dr. Cotsarelis sees patients age 18 and older. He practices at Penn Dermatology Radnor and a second location in the Philadelphia region.
Dr. Cotsarelis earned his medical degree from the University of Pennsylvania School of Medicine. He completed his first residency at Geisinger Community Medical Center, then returned to the University of Pennsylvania Health System for a second residency and a fellowship.
Dr. Cotsarelis sees patients at Penn Dermatology Radnor and a second Penn Medicine location in the Philadelphia area.
Yes, Dr. Cotsarelis is a senior leader within Penn Medicine. He chairs the Department of Dermatology and holds an endowed professorship within the system.
Doctor profile last updated March 21, 2026