Dr. Weinberg was born in Kiev, Russia. His family immigrated to Chicago after World War I. He received his M.D. from the University of Illinois (1936), interned at St. Elizabeths Hospital in Chicago, and served a residency at the Chicago State Hospital (1937–40). He received psychoanalytic training in Chicago under Dr. Thomas French (1939–42). He served for a short time as Assistant Managing Officer at the Chicago State Hospital until he was appointed Psychiatrist-in-Chief of the Chicago Community Clinic (1990–93). He was on active duty in the U.S. Air Force during World War II. After the war, his interest in geriatrics became predominant in his professional life.
Dr. Weinberg spent some time in private practice and as a consultant, but returned to public service in many capacities. He was Clinical Director of the Illinois State Psychiatric Institute (1997–50), in charge of the residency training program at Michael Reese Hospital (1947–49), and a consultant to the Veterans Administration. His work touched many institutions and psychiatric training sites in Chicago, as well as serving on the boards of community organizations. He was a Professor of Psychiatry at the University of Illinois and contributed many papers and chapters to the psychiatric literature.
In 1970, Dr. Weinberg was awarded the Allen Award of the American Geriatric Society for his constant contributions, and in 1974, the Gerontology Society of America awarded him the Kent Award for his interpretation of gerontology for the larger society.
He served as President of the APA Illinois District Branch (1966–67) and as a member of the Group for the Advancement of Psychiatry and the American Association for the Advancement of Science.
Dr. Weinberg served as Treasurer of the American Psychiatric Association (1973) and as President (1977–78).