MaryAnne Ost, MD has more than 27 years experience providing comprehensive health care to families living in the Chester County area. Dr. Ost was an Associate Clinical Instructor of Family Practice Medicine on the faculty of the University of Pennsylvania Medical School and earned their Excellence in Clinical Management award in 1999.

Dr. Ost is board-certified in family practice and geriatrics. She received degrees from the University of Pennsylvania, Temple University and her medical degree from the American University of the Caribbean School of Medicine.

She is a member of the American Academy of Family Practice, American Medical Association and both the Pennsylvania and Chester County Medical Societies. Her special interests are in the areas of disease prevention and management, geriatrics, women's health management and pediatrics.

Sharon Jarrett, CRFNP graduated from the Chester County Hospital School of Nursing as a registered nurse. She received her Bachelors of Science in Nursing from Immaculata College and her Master of Science in Nursing/Family Practitioner at Wilmington College. She is a certified nurse practitioner and a member of the American Academy of Nurse Practitioners.

For ten years, Sharon cared for patients in the oncology/ medical/surgical unit at Chester County Hospital and gained experience as a nurse supervisor at an extended care facility. Sharon's special interests include disease prevention with a holistic approach, the management of chronic disease and depression, and women's health issues.