Marlana S Ottinger, MD, earned her medical degree from the Drexel University College of Medicine in Philadelphia. Following an internship at Bryn Mawr Hospital in Bryn Mawr, PA, she completed a residency program in radiation oncology at Georgetown University in Washington, D.C. Dr Ottinger served as a clinical assistant professor of radiation oncology at the University of Pennsylvania School of Medicine and as clinical Director of Penn Radiation Oncology at the Chester County Hospital in Chester County, PA. Dr Ottinger is board certified in radiation oncology by the American Board of Radiology and is a member of the American Society for Therapeutic Radiology and Oncology and the Maryland State Medical Society.