Dr. Frank Lloyd Weaver Jr., 62, a physician in Washington and then in Salisbury, Md., died at his home in Salisbury Monday following a heart attack.

Dr. Weaver was born in Grosse Ile, Mich. He attended the University of Michigan and graduated from George Washington University. He was a navy pilot during World War II and saw service in the Pacific. He held the rank of lieutenant commander.

After the war, he entered George Washington University medical school and earned his degree in 1950. He interned in the Public Health Service hospital in Detroit, and then was chief of the public health service clinic in Washington.

In 1953, he entered the private practice of general medicine in Washington.

In 1968, he moved to Salisbury and practiced there until his death.

Dr. Weaver was a member of the American Medical Association.

His marriage to the former Kathryn Inberg ended in divorce.

Survivors include his wife, Mary; Three children by his first marriage, Kristine DeWitt of Mount Airy, Md.; Frankl Lloyd III of College Park, and Mark John of Laurel; and two grandsons.

The family suggests that expressions of sympathy be in the form of contributions to the Education Fund, Wicomico County Medical Society, P.O. Box 1771, Salisbury, Md., 21801. w