Dr. Bernstein then trained at the MGH McLean Psychiatry Residency Program in Belmont, Mass., where he served as chief resident. He remained at McLean Hospital after residency as a psychiatrist-in-charge and later served as assistant medical director of its schizophrenia and bipolar inpatient program. Dr. Bernstein has developed his passion for community-based care as the chief medical officer at Ellenhorn, a sister program of Accord, where he has pursued alternative ways (such as a focus on metabolism, nutrition, circadian-rhythm biology and exercise in brain function) to help individuals achieve their best levels of functioning without relying solely on traditional psychiatric approaches. In addition to serving on the clinical advisory board at Metabolic Mind, Dr. Bernstein is known for organizing the first-ever public conference on metabolic psychiatry in 2023.