Navy Capt. James Ivan Myers, 52, a health care administrator assigned to the Department of Defense who earlier held field and staff positions in this country and in Vietnam, died of cancer Wednesday at the National Naval Medical Center in Bethesda.

Capt. Myers enlisted in the Navy in 1945. After receiving a Medical Corps Commission in 1956, he was assigned to the Naval Hospital at Bethesda for three years. He subsequently served with the Bureau of Medcine and Surgery, at the Naval Hospital in Portsmouth, Va., with the Naval Support Activity in Danang, Vietnam, and with the Atlantic Fleet and on the staff of the Supreme Allied Commander for the Atlantic in Norfolk, Va.

Since 1976, he was assigned to the Tri-Service Medical Information System and the Uniform Chart of Accounts system at the Defense Department.

His military decorations include the Bronze Star medal with combat "V".

Capt. Myers, who lived in Arlington, was born in Jacksonville, Ill. He earned a bachelor's degree and a master's degree in personnel administration from George Washington University. He was a graduate of the Naval School of Hospital Administration.

He was a Mason and a member of the Kensington Lodge No. 198 and a member of the National Sojourners, the Retired Officers Association, the International Personnel Management Association, the Naval Institute, the American College of Hospital Administration and the Association of Military Surgeons of Uniformed Services.

His marriage to Elizabeth Jane Myers ended in divorce.

Survivors include his wife, Nancy Carol, and a stepdaughter, Christine Carol Synder, both of Arlington; five sons by his first marriage, Michael B., Jay D., and Jeffrey S., all of Portsmouth, and Lance S., on duty with the Navy in Sardinia, and Rodney A., of Kent, Ohio, and three grandchildren.