Diana H. Griffiths, MD, is a medical oncologist at Ascension Saint Agnes in Baltimore, MD. Dr. Diana Griffiths has pioneered the treatment of cancer at Ascension Saint Agnes, establishing the Ascension Saint Agnes Cancer Center in 1978 as Chief of Medical Oncology and later founding the Ascension Saint Agnes Breast Center in 1994 as the Medical Director. The Ascension Saint Agnes Breast Center was one of the first national programs to receive full accreditation in 2007.