Our Doctors

Our doctors provide the highest quality of medical and ethical standard in an environment that nurtures the spirit of caring for every woman.

Our team has been serving the greater Frederick community for over three decades. It has been our mission to provide our patients with outstanding obstetric and gynecologic care.

Dr. Jie Gao

Dr. Jie Gao received his medical degree from China Medical University in 1985. He completed his first OB&GYN residency training at the second affiliated hospital of China Medical University in 1990. As an OB&GYN attending physician, Dr. Gao had actively practiced over ten years in China. He finished his second OB&GYN resident training in Grand Rapids Medical Education & Research Center for Health Professions, Michigan in June 2008. He has been practicing at the OB&GYN Center since August 2008. He became a board certified Obstetrician and Gynecologist in 2011. Dr. Gao and his wife enjoy vegetable gardening, being outdoors, and spending time with their children.

Dr. Edwin Chen

Dr. Edwin Chen received his medical degree from National Taiwan University in Taiwan in 1975. He completed resident training in OB & GYN in Cathay General Hospital in Taipei, Taiwan in 1981. In 1992, he finished his second residency in OB & GYN in New York Medical College in Valhalla, New York. He became board certified in Obstetrics and Gynecology in 1994. He began practicing in Frederick in 1992. In 2016, after almost 25 years of delivering babies, Dr. Chen made the difficult decision to retire from OB.
He still serves the Frederick community by providing outstanding GYN care. Dr. Chen and his wife enjoy long walks together and spending time with their family.

Dr. Debra Acerenza

Dr. Debra Acerenza received her medical degree from Nova Southeastern University in Fort Lauderdale, Florida. She completed her Obstetrics and Gynecology residency at Sinai Hospital in Baltimore, Maryland, and has been practicing at the OB&GYN Center since July 2002. She became a board certified Obstetrician and Gynecologist in 2005. In her spare time, Dr. Acerenza and her husband enjoy spending time with their two boys, biking, and running.

Nurse Practitioners

Dawn R. Mossburg, CRNP

Dawn R. Mossburg, CRNP, completed her Bachelor of Science Degree in Nursing in 1990 at University of Maryland and Master of Science in the specialty of Women’s Health Nurse Practitioner in 2003 at the University of Maryland in Baltimore County. She joined the OB&GYN Center in 2004. Dawn went on to continue her education and became a Licensed Massage Therapist in 2015 with special attention being focused on prenatal massage. She enjoys reading during her spare time.

Caroline 'Carrie' Bergstresser, WHNP

Carrie Bergstresser is a certified registered Nurse Practitioner specializing in Women’s Health. Originally from Virginia Beach, VA, she received her Bachelor of Science in Nursing from the University of Virginia in 2011. She received her Master of Science in Nursing from Georgetown University in 2014. She is certified as a Women’s Health Nurse Practitioner through the National Certification Corporation for Obstetric, Gynecologic, and Neonatal nursing specialties. She has been caring for women of all ages while working in an outpatient obstetrics and gynecology setting. Carrie joined the OB&GYN Center in August 2018. In her free time, she enjoys reading, traveling and spending time with her husband.