About Our Host

Headshot of Your Radio Doctor's host Dr. Marianne T. Ritchie.

Our host Marianne T. Ritchie, MD is a practicing Gastroenterologist with Jefferson University Hospital. Her career spans three decades.  She trained at Memorial Sloan Kettering Cancer Center, the world’s oldest and foremost all-cancer hospital.  After time in New York, Dr. Ritchie returned home to practice at the Lankenau Hospital in Wynnewood and was later a faculty member at Temple University Hospital..

Dr. Ritchie was the first female gastroenterologist practicing in the Philadelphia suburbs.  She has been a leading advocate for over thirty years. Ritchie developed the PINKPLUS triple cancer screening program for women, and she also launched the BLUE LIGHTS CAMPAIGN for Colon Cancer Awareness.

Marianne is married to Dr. Stuart Gordon.  They have three children and are avid dog lovers.  Dr. Ritchie is also a member of national and international medical societies, a board member of the Colorectal Cancer Alliance, and a recognized author and public speaker.