Meet the Doctors


Mary Jo Massaro, DMD

 Dr. Massaro was born and raised in Havertown, Pennsylvania.  She attended Archbishop Prendergast High School where she graduated with top honors, studied in the Comprehensive Science Program at Villanova University, and graduated Magna Cum Laude from Temple University with a degree in Biology.  She then went on to Temple University School of Dentistry where she excelled in the academic and clinic aspects of dentistry.  She was treasurer of the Stomatognathic Honor Society and went on a mission trip in Haiti to perform dentistry on the underserved.  After earning her doctorate degree, she continued her dental training at Christiana Care Hospital in Wilmington, Delaware, where she was able to hone her skills in surgery, implants, and interdisciplinary care on medically compromised patients.  She was chosen to work under one of her attending doctors after graduation from the residency program, where she remained from 2010 until 2019.

 Dr. Massaro strives to keep up with current technology and techniques.  Throughout her career, Dr. Massaro has studied at the famous Pankey and Spear Institutes for advanced training in dental function, esthetics, and full mouth rehabilitation.   She is keenly aware of the mouth/body connection and how each patient’s unique situation contributes to their overall health, like how orthodontics can improve a patient’s sleep apnea, and treating periodontal disease can improve heart and vascular health. 

She practices mercury free, mercury safe dentistry and truly cares about her patient’s wellbeing.  She became S.M.A.R.T. certified in 2018 which means she safely removes silver “amalgam” fillings, compared to most dentists who do not use any precautions when working with mercury.  She delivers quality dental care and believes in educating her patients in being their own dental health advocate.

Dr. Massaro’s patients often remark what a light touch she has, and how pleasantly surprised they are with their dental experience.  She welcomes people of all ages at her practice, including those who are scared of the dentist.  It is not uncommon for the entire family to end up being patients of Dr. Massaro’s!

Dr. Massaro and her husband reside in Newtown Square with their 3 children.  In her free time, Dr. Massaro likes to read, learn to play tennis, and go to the shore.


Dr. John R. Sorge, Jr., DDS

Dr. Sorge was born and raised in the Philadelphia area. He attended Villanova University where he graduated magna cum laude with a Bachelor of Science Degree. Dr. Sorge attended Temple University's School of Dentistry, where he was appointed by the Dean as the first President of his class. While at Temple Dr. Sorge was a member of both the Oral Surgery Honors Society and the Periodontal Honors Society, and graduated with honors. After Dental School Dr. Sorge was accepted in the United States Navy Dental Corps. He spent the majority of his time serving as a Navy Lieutenant providing Dental care for the aviators and servicemen and women of the United States Marine Corps 2nd Division Air Wing. He received specialty training at Bethesda Naval Hospital, and was in the top 5% in his fitness reports. After his military service he returned to our area, and has been practicing Dentistry at his present location since 1986.

Dr. Sorge was among the first dentists in Chester County to provide implants for his patients, studying at the Institute for Facial Esthetics in the late 1980's. He attends continuing education courses on an ongoing basis that include Dentistry, Medicine, Nutrition, Healthy Living, Chronic Pain and Aging, and has completed courses at the John Hopkins University of Civilian Biodefense Strategies, and the U.S. Army Medical Research Institute of Infectious Diseases in Frederick Maryland. Dr. Sorge has been selected as one of "America's Top Dentists" every year since 2003.

Dr. Sorge is a gentle and caring Dentist, who uses the most advanced and painless techniques available to provide the highest level of comfort and quality dental care for his patients. He prides himself in creating a personal relationship with each patient. Dr. Sorge carefully listens and explains in detail the best options available for each patient's particular needs. Patient education is a priority, and patients make informed decisions. Dr. Sorge creates an element of trust with his patients that is not often found or expected. He creates a sense of security in knowing you are receiving the best Dental Treatment possible in a caring and painless manner.