Phil is a venture partner at Third Rock Ventures and has served as Chief Medical Officer of Goldfinch Bio, co-founder of Fulcrum Therapeutics, co-founder and Chief Medical Officer of Voyager Therapeutics, Chief Medical Officer of Bluebird Bio, co-founder of Edimer, among other startup roles. He served as Chairman and CEO of Interleukin Genetics. He earned his medical degree at the Yale School of Medicine.