Catherine Reilly, MD

Dr. Ronald Sweren is an assistant professor of dermatology at the Johns Hopkins University School of Medicine. His areas of clinical expertise include cutaneous lymphoma/mycosis fungoides, phototherapy/ photopheresis and melanoma. Dr. Sweren also serves as director of the Phototherapy/Photopheresis Program in the Department of Dermatology.Dr. Sweren earned his M.D. from the University of Maryland School of Medicine. He completed his residency in dermatology at University of Maryland Medical Center and in pediatrics at Sinai Hospital of Baltimore.