Dr. David DeFries Jr. is a third generation Chiropractor following in the footsteps of his late grandfather Dr. William DeFries. Dr. W. DeFries practiced in Chester Pennsylvania until his death in 1968. His son, Dr. David DeFies Sr. took over the practice soon after located on west 23rd street. As the practice grew Dr David DeFries Sr. relocated an office on Providence Avenue. With the continued acceptance of Chiropractors within the community and by most insurance plans, additional space was needed and the office was moved once again to Edgemont Avenue in Brookhaven. Dr. Denise DeFries joined the practice after graduating from Life Chiropractic in 1989. The father and daughter teams of Dr's David Sr. and Denise continued to grow the practice in the Brookhaven location until once again DeFries Chiropractic was moved to a new location to better serve their patients. The new and current location of DeFries Chiropractic Center is located in Aston, Pennsylvania On Pennell Road. Dr David DeFries Jr Joined his father and sister in January of 2003 and worked along side his father and sister until January of 2007 and shortly thereafter opened the current office located in Boothwyn.