BOSTON (AP) _ Dr. Joseph Stokes III, professor of medicine and public health at Boston University School of Medicine and the first dean of the University of California at San Diego, has died. He was 64.

He died Monday at University Hospital. The cause of death was not immediately available.

Stokes was graduated magna cum laude from Harvard Medical School and also studied epidemiology and biostatistics at the Harvard School of Public Health.

He joined the U.S. Public Health Service in 1951 and was assigned to the Framingham Heart Study.

He later served as chairman of the Department of Preventive Medicine at Harvard Medical School and directed the Family Health Program at Massachusetts General Hospital.

He served as a heart disease control officer for the Hawaii State Department of Health and conducted a study of coronary heart disease among native Hawaiian men and men of Japanese ancestry.

He became dean at UC-San Diego in 1964 and was affiliated with the school for 18 years.

He also was a member of the section of preventive medicine and epidemiology at the Evans Department of Clinical Research at University Hospital.

He recently received the Distinguished Service Award from the American College of Preventive Medicine and was a past president of both the Association of Teachers of Preventive Medicine and the Association of Behavioral Sciences and Medical Education.

He is survived by his wife, one daughter, three sons and three grandchildren.