Dr. Francis P. Hannan, 68, who had maintained a general practice of medicine in Washington since 1937, died Wednesday at his home in Washington after an apparent heart attack.

Born in Washington, he was a graduate of St. John's College High School and Catholic University. He earned a degree from the Georgetown University Medical School in 1935 and went into private practice after serving his residency at Georgetown University Hospital.

During World War II, Dr. Hannan served as an officer with the Army Medical Corps and was attached to the 5th Infantry Division of the Third Army in Europe.

He was discharged with the rank of major in 1945 and returned to private practice in Washington. His office was at 1511 17th St. NW for many years.

Dr. Hannan was a member of the D.C. Medical Society, the Georgetown Clinical Society and St. Luke's Medical Guild.

He was a member for many years of the Holy Name Society of St. Matthew's Cathedral and of the John Carroll Society.

At the time of his death, Dr. Hanna was on the board of directors of the National Permanent Savings and Loan Association.

He is survived by his wife, Rose, of the home, and five brothers, Archbishop Philip M. Hannan, of New Orleans, and William T., Thomas K., Denis T., and Patrick J. Hannan, all of the Washington.