Frederick Sillman

 Frederick Sillman of Cambridge, MA, formerly of New York City, passed away at age 89, on January 14, 2026. He was the cherished husband of Jane Sillman as well as a loving father and grandfather. Fred was a warm and kind person who had a great sense of humor. Born in 1936, Fred grew up in New York City with a pioneering physician mother, Sophie Kleegman, and a calm multi-talented father, Jack Sillman. Fred attended many illustrious institutions (Deerfield Academy, Princeton University, Harvard Medical School), and loved them all, yet he remained humble and informal throughout his life. He appreciated what each school offered and built lasting friendships along the way. Fred was an innovative gynecological oncologist who cared deeply about his patients. He worked at SUNY Downstate in Brooklyn, NY, and later at Mass General Brigham in Boston, MA. Fred treated numerous patients while mentoring fellows, residents, and medical students. His contributions to the field of women’s health included research on cervical cancer, HPV, and pre-cancerous lesions. Beyond work, Fred had many interests that he eagerly pursued. Fred loved sports of all kinds, especially cycling in multi-colored spandex outfits. Fred marched to the beat of his own drum, was a relentless optimist and loved adventures. In addition to his wife, Fred is survived by his children, Kathryn (Ray) and Eric (Rebecca), grandchildren, Sophie, Theo, Jules, Toby, and Lena, and sister Anne. Should you feel moved to donate in Fred’s honor, please consider Planned Parenthood or a AdoptaStation.