Board-Certified Dermatologist & Mohs Surgeon

Dr. Abraham is a board-certified dermatologist and one of Philadelphia’s most senior Mohs Surgeons. After attaining his undergraduate degree at Temple University, Dr. Abraham attended Jefferson Medical College.  He completed his ​internship at Thomas Jefferson University and his ​dermatology training at​ the​ Temple University Skin and Cancer Hospital. Dr. Abraham ​is a fellow of the American Society for Mohs Surgery.

Dr. Abraham maintains the highest levels of accreditation and pursues ongoing education to stay abreast of the latest trends in dermatology.  He provides a full range of dermatologic care with a special interest in skin cancer screening/treatment and treatment of psoriasis using various modalities including phototherapy and various new biologic therapies. Dr. Abraham treats patients of all ages.

In addition to his love of dermatology and caring ​of patients, Dr. Abraham enjoys the theater and visual arts with his wife Ellen, who is a prolific ​artist. 

Board-Certified Dermatologist

 
Irving D. Wolfe, MD, is a distinguished board-certified dermatologist based in Owings Mills, MD, with five decades of dedicated service in the medical field. With a profound commitment to excellence, Dr. Wolfe specializes in all areas of dermatology, including skin cancer detection and treatment, wielding extensive expertise in the field. He retired from the field of dermatology on June 26, 2025. 

A proud alum of the University of Maryland, Dr. Wolfe earned his medical degree in 1974, laying the foundation for his illustrious career. He then served as chief resident of the Department of Dermatology at the University of Maryland School of Medicine. He also served in the military, where he completed an internship, one year of medical residency, and one year as a general medical officer at the United States Public Health Service’s hospital in Baltimore, MD, as well as on the United States Coast Guard Cutter Mendota. Throughout his journey, he has remained at the forefront of dermatological advancements, continually enhancing his skills and knowledge to provide optimal patient care.

Dr. Wolfe held several faculty and hospital positions in dermatology at both the University of Maryland and Johns Hopkins University. A published author, he is a member of the American Board of Dermatology and the Maryland Dermatologic Society and is affiliated with LifeBridge Health Hospital in Maryland.

Board-Certified Dermatologist 

Steven R. Weasen, MD grew up in the Bronx, NY. Dr. Weasen attended the Bronx High School of Science and Stony Brook University. He graduated from Ohio State University School of Medicine followed by a general internship in dermatology at the Cleveland Clinic Hospital.

Dr. Weasen is board certified in dermatology and is a fellow of the American Academy of Dermatology. He is a member of the Pennsylvania Academy of Dermatology and Philadelphia Dermatologic Society. Dr. Weasen has a special interest in skin cancer screening and treatment. He practices general medical dermatology and enjoys treating both children and the elderly.

Dr. Weasen is an avid sports fan and enjoys playing basketball and tennis. He met his wife, Stephanie Knapp (Allergist) at his Cleveland Clinic Dermatology Residency. He has 3 adult children.

Board-Certified Dermatologist 

Dr. Karen Deasey graduated from Dickinson College with a Bachelor’s degree in Biology before going on to attend the Medical College of Pennsylvania. She completed her internship at Abington Memorial Hospital and her dermatology residency at the Hospital at the University of Pennsylvania in Philadelphia. Dr. Deasey opened her Dermatology practice in Bryn Mawr in 1980. She has also served as Chief of Service for Dermatology for the Main Line Health System.

Dr. Deasey is a board-certified dermatologist with an active practice in Bryn Mawr. She enjoys all aspects of skin diseases, particularly complex rashes, psoriasis, atopic dermatitis, and the diagnosis and treatment of skin cancers and melanoma. She believes in treating the whole patient, always asking questions about their overall health in addition to treating their skin concerns. She sees patients of all ages and strives to provide a warm and welcoming environment from the minute patients walk into her office.

Dr. Deasey is an active member of the PA Academy of Dermatology, PA Medical Society, American Academy of Dermatology, the Philadelphia Dermatology Society, and the Philadelphia Medical Club of Women.

She lives with her husband, Frank, and has two adult sons. In her free time, Dr. Deasey is an avid gardener and attempts to play golf. She loves to travel with her husband and is an active member of her church, singing in the church choir.

Board Certified Dermatologist 

Dr. Stephanie A. Mackey was born and raised in Williamsport PA and graduated magna cum laude from Penn State University honors college with a biology degree. She received her medical degree from the Penn State College of Medicine and was a member of the Alpha Omega Alpha Medical Honor Society.

She then completed her internal medicine internship at Hershey Medical Center and dermatology residency at Geisinger Medical Center in Danville, PA.

She is a board-certified member of the American Academy of Dermatology, and also has memberships in the Pennsylvania Academy of Dermatology and the Lancaster County medical society, having served as president of both the state and local societies.

Dr. Mackey practices general medical dermatology and enjoys treating patients of all ages.  Diagnosing and treating skin cancer is particularly meaningful due to the impact it has on a patient’s life. Educating family practice residents from Lancaster General Hospital has been a passion of hers for many years and she has received numerous teaching awards.  She was named the top dermatologist by the Lancaster County Magazine’s reader’s poll in 2019, 2020, and 2021.

She is an avid outdoor enthusiast and enjoys biking rail-trails around the country, as well as hiking and teaching Body Pump classes at her local rec center. For the past two decades, she has rescued retired greyhounds, having a special affinity for the senior hounds. 

Dr. Deirdre Wood received her medical degree from Hahnemann University/Medical College of Pennsylvania in 1996. She continued with an internship in International Medicine at both the Medical College of Pennsylvania Hospital and the Philadelphia Veteran's Administration. Afterward, she began a Dermatology Residency at Hahnemann. She completed four additional years of training including a specialty fellowship in cutaneous lymphomas. She was Chief Resident during her final year.

Board-Certified Dermatologist

Linda Leventhal, MD, PhD, is board-certified by the American Academy of Dermatology. She practices medical, surgical, and cosmetic Dermatology. She treats children and adults with a wide variety of skin conditions.

Dr. Leventhal earned her MD and PhD at Drexel University College of Medicine in Philadelphia, PA. Special recognition was awarded to her with selection to the Alpha Omega Alpha Medical Honor Society in her junior year of medical school, and she was chosen to serve as president.

She completed her internship in Internal Medicine at Albert Einstein Medical Center in Philadelphia, PA. She went on to receive her Dermatology Residency training at the Hospital of the University of Pennsylvania in Philadelphia, PA.  She was selected to serve as Chief Resident during her final year.

Dr. Leventhal is a Fellow of the American Academy of Dermatology and is a member of the Women’s Dermatology Society, the Philadelphia Dermatology Society, the Pennsylvania Medical Society, the Bucks County Medical Society, and the Pennsylvania Academy of Dermatology.