Dr. Marianne Ritchie is a graduate of Jefferson Medical College. After training in Gastroenterology at Memorial Sloan Kettering Cancer Center in New York, she returned to Philadelphia where she has practiced for over 30 years.
Dr. Ritchie founded the Blue Lights Campaign as a means of promoting awareness of colon cancer with the hope of increasing screenings through procedures like colonoscopies.
Dr. Ritchie is the host of Your Radio Doctor, the only all-medical radio show in Philadelphia each Sunday at 10 am. She is also the MEDICAL CONTRIBUTOR for another radio show, Women to Watch each Sunday at 7 pm. Both radio shows air on WPHT, radio 1210 AM.