Rockville Office:
6163 Executive Boulevard, Rockville, MD 20852
Call: 855-314-1424
Frederick Office:
7101 Guilford Drive #105, Frederick, MD 21704
Call: 855-314-1425

Meet the Team

Ronald B. Prussick, MD, FRCPC

Ronald B. Prussick, MD, FRCPCDr. Prussick is our medical director at The Washington Dermatology Center, where he has assembled the latest in technology and products for specialized medical and cosmetic dermatological care. Our state-of-the-art facilities, which are HIPAA compliant, are designed to successfully treat diseases that affect the hair, skin, and nails.

An Assistant Clinical Professor at George Washington University, Dr. Prussick has been published many times, and he frequently speaks at medical conferences around the country and internationally. He has served a variety of community organizations by volunteering as a committee member, such as the Chairman of the Adverse Drug Reactions Sub-Committee at Suburban Hospital.

Dr. Prussick has been voted one of the top doctors by the Washingtonian Magazine time after time, and has been repeatedly named one of America’s Top Physicians by the Consumers Research Council. Board certified by the American Board of Dermatology in 1991, he received extensive training in the specialization of laser treatments as well as the treatment for psoriasis.

Academic appointments of Dr. Prussick, a Fellow of the American Academy of Dermatology, include:

  • Completed fellowship, and clinical consultant for the Dermatology Branch of the National Cancer Institute, National Institutes of Health.
  • Assistant Clinical Professor of Dermatology, George Washington University School of Medicine.
  • Clinical Instructor, Division of Dermatology & Pharmacology, Dept. of Medicine, University of Toronto (1992 – 1995).
  • Studied medicine at McGill University in Montreal, Canada.

Dr. Prussick has served as an advisory board member or speaker for companies including AbbVie, Allergan, Amgen, Biogen/Idec, Genentech, Janssen, Leo Pharma, Medicis/Valeant, Merk, L’Oreal, Medimetriks and has worked in the capacity of cosmetic trainer for Allergan and Medicis/Valeant.

He has served on the Medical Board for the National Psoriasis Foundation and helped create the Elasense Skin Care line for Immunotec,Inc .

He has also been a Clinical researcher for Novartis, Genentech, Gene Logic Corporation, Galderma, Dow Pharmaceuticals, Astra Pharma, Amgen, and 3M.

Dr. Prussick’s Staff:

Mary Piazza Maiberger M.D.

Dr. Mary Piazza Maiberger is native to the Washington area. She graduated Phi Beta Kappa and Magna Cum Laude from Princeton University, receiving her Bachelor’s Degree in English before attending medical school at the Medical College of Virginia/Virginia Commonwealth University in Richmond, Virginia. Earning her medical degree, she was recruited into the Alpha Omega Alpha Honor Society. Dr. Maiberger completed an internship in Internal Medicine as well as her Dermatology Residency at MCV/VCU where, in her last year, she was Chief Resident.

With an early affection for dermatology, beginning during medical training, Dr. Maiberger was keenly aware of the signs internal disease would show on the skin. She also sympathized with those suffering from skin conditions, understanding that quality of life can be severely impacted by skin disease. Dr. Maiberger has extensively researched both skin cancer and tanning behaviors, and has published research and presented at major medical conferences on inflammatory skin conditions.

Dr. Maiberger, who lives in Maryland with her husband and daughters, provides general dermatological care, with a focus on acne/rosacea, skin cancer prevention, and inflammatory skin disorders. She is a member of the American Academy of Dermatology as well as the Women’s Dermatologic Society.

Jennifer Nguyen M.D.

Jennifer Nguyen M.D.

Dr. Nguyen received her M.D. from the University of Pennsylvania in 2007 where she was inducted into the Alpha Omega Alpha Medical Honor Society. She completed her dermatology residency and dermatopathology fellowship at the University of Pennsylvania. After her training, she served on the teaching faculty at the University of Pennsylvania as an Assistant Professor in Clinical Dermatology. Her clinical interests include skin cancer, medical dermatology, and autoimmune alopecia.

Erin McClure

Erin McClure grew up in Asheville, NC and received her Bachelor’s of Science degree from the University of North Carolina at Chapel Hill. After working at a dermatology clinic for several years, Erin went on to complete her Master’s of Physician Assistant Studies at East Carolina University and began her career in family practice & urgent care. She eventually transitioned into the field of dermatology and spent six years practicing medical & aesthetic dermatology in Florida. Erin is a Nationally Certified Physician Assistant as well as a Society of Dermatology Physician Assistants Diplomat. As a member of the Washington Dermatology Center team, Erin is excited to continue her passion of providing exceptional skin care to her patients.

Meryl Elyse Gudelsky, R.N., BSN

Meryl Elyse Gudelsky, R.N., BSNMeryl earned her Bachelor of Science in Nursing from Downstate Medical Center in 1982. Until 1993, she worked in the Operating Room at Sibley Memorial Hospital. She then became a skin care specialist, first working in plastic surgery before joining the staff at The Washington Dermatology Center in Rockville. In addition to providing personalized skin care treatment and guidance to our patients, Meryl performs laser hair removal and other laser treatments, as well as chemical peels, microdermabrasion, and photo facials.


Alexa Toohey, MSN, FNP-C

Alexa TooheyAlexa Toohey is a board-certified Nurse Practitioner. Alexa graduated Magna Cum Laude from Catholic University with a Master of Science, and was inducted into Sigma Theta Tau International Honors Society of Nursing, along with receiving the Dean’s Award for academic excellence. Alexa served as a Clinical Nurse for six years at Georgetown University Hospital after graduating with a Bachelor of Science in Nursing from James Madison University. She is a member of the National Academy of Dermatology Nurse Practitioners, American Academy of Nurse Practitioners, and Dermatology Nurses Association. Alexa is passionate about dermatology and will be seeing patients in both the Frederick and Rockville offices.

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