About Your Doctors

Dr. Jane T. Nguyen, M.D.


Dr. Jane T. Nguyen, M.D. is a board-certified dermatologist and co-founder of Dermatology Center of Loudoun. Her areas of special interest are skin cancer and pediatric dermatology. Her professional memberships include the American Academy of Dermatology and the Medical Society of Virginia.

Dr. Smeena Khan, M.D.


Dr. Smeena Khan, M.D. is a board-certified dermatologist. Her areas of special interest are cosmeceuticals and anti-aging treatments, acne and auto-immune skin diseases. She is a Fellow of the American Academy of Dermatology and a member of the prestigious Alpha Omega Alpha Honor Medical Society.

Dr. Khoa Tran, M.D.


Dr. Khoa Tran, M.D. is a co-founder of Dermatology Center of Loudoun. He received his medical degree at New York Medical College in 1999 and completed his residency training in internal medicine at the Hospital of the University of Pennsylvania.

Sofia Hanger, PA-C

Sofia Hanger, PA-C is a board-certified Physician Assistant who completed her undergraduate degree from James Madison University in Harrisonburg, Virginia. She went on to earn her Master’s degree in Physician Assistant studies from Emory University in Atlanta, Georgia.

Keri Church, PA-C


Keri Church, PA-C is our newest addition to the clinical team at Dermatology Center of Loudoun. She received her BA in Psychology at Georgetown University and completed both a Masters in Management at Wake Forest University School of Business along with her Physician Assistant degree at Wake Forest University School of Medicine.

Farhaad Riyaz, MD, FAAD,


DCL is proud to offer the Mohs expertise of Dr. Farhaad Riyaz, MD, FAAD, to our patients. After completing an exceptional training career in the midwest — obtaining multiple degrees, leadership and research roles — Dr. Riyaz practiced in Washington, DC and has earned the respect of his patients and peers as a Washingtonian Top Doctor.

“Just wanted to compliment the office on the professionalism… Each time I have come in, its’s been a great experience; doesn’t even feel like I’m going to a doctor’s office. Thank you so much! And, this is why I recommend your office more than others. It’s the quality of care!”

– George King
“Sofia’s radiant smile shows a person that loves her profession. She makes me happy when I see her and she is helping me get better. I trust her completely to make any decisions regarding my treatment because she is knowledgeable, competent and most important – caring”.

– Barbara O., psoriasis

Get In Touch

Follow Us

Call Us


Locate Our Office

Click here for more information on our locations