Toyin Ajayi is Chief Health Officer and co-founder of Cityblock Health, a New York-based healthcare company radically improving community health, block by block. Prior to Cityblock, Toyin served as Chief Medical Officer of Commonwealth Care Alliance, a nationally-renowned integrated health plan and care delivery system for individuals dually-eligible for Medicare and Medicaid. There, she led clinical operations, spearheaded care delivery innovations, and oversaw multi-disciplinary care teams serving more than 20,000 beneficiaries across the state of Massachusetts. Toyin received her undergraduate degree from Stanford University; an MPhil from the University of Cambridge; and her medical degree, with Distinction in Clinical Practice, from King’s College London School of Medicine. She is a board-certified Family Physician, and continues to practice medicine, focused on patients with chronic, complex and end-of-life needs.