Physician Profiles

Douglas C. Semler, MD, FAAD

Dr. Semler is a board certified dermatologist and dermatologic surgeon. He is an active member of the American Academy of Dermatology.

Dr. Semler earned his Bachelor of Science degree, magna cum laude, from the University of Michigan. He obtained his medical degree from the University of Cincinnati College of Medicine, where he was a member of the Alpha Omega Alpha medical honor society. He completed his internship and dermatology residency at Case Western Reserve University, serving as Chief Resident in his final year.

Dr. Semler is a staff physician at INOVA Loudoun Hospital.


Shannon Whitlock, PA-C

Shannon Whitlock is a certified physician assistant (PA-C) specializing in dermatology. She is a member of the American Academy of Physician Assistants and the Society of Dermatology Physician Assistants.

Shannon received her Master of Health Science degree from The George Washington University graduating from its Physician Assistant Program with honors (Alpha Eta Honor Society).

As a physician assistant Shannon is certified to diagnose and treat dermatological conditions, order and interpret tests and prescribe medications. In addition to treating acute and chronic conditions she performs skin cancer screenings, biopsies, surgical excisions, cryotherapy and cosmetic procedures.