Dr. C. Willard Camalier Jr., 63, chief of surgery at Sibley Memorial Hospital and a delegate of the American Medical Association who had been president of the Medical Service of D.C., died of a heart ailment Saturday at Georgetown University Hospital.

Dr. Camalier had been a member of the executive board of the Medical Society of Washington and the AMA's house of delegates for the past 16 years.

He had chaired a number of panels for the AMA, including its council on medical service since 1974. He earlier had chaired the committee on health care financing.

As a Washington delegate to the AMA in 1964, he had called for "a realistic" medical health care program for senior citizens, and called on the AMA to soften its opposition to what later became Medicare.

Dr. Camalier was a consultant to the AMA on National Health Insurance.

He was president of the Medical Service of D.C., the local Blue Shield Plan, from 1966 to 1967.

In 1960, he received the Certificate of Meritorious Service from the Medical Society of the District of Columbia for his services to the medical profession.

Dr. Camalier had maintained a practice in general surgery in the area since 1942. In addition to serving as surgery chief at Sibley for about five years, he had been a clinical associate professor of surgery at Georgetown University's medical school for more than 10 years.

He was a native of Washington and a graduate of George Washington University. He earned his medical degree at Duke University in 1938.

He served as an Army surgeon in Europe during World War II.

Dr. Camalier was a diplomate of the American Board of Surgery, and a member of the American College of Surgeons. His other professional memberships included the Southern Medical Association.

He was a 33rd degree Mason, member of the Scottish Rite, Royal Order of Jesters, and Almas Temple.

He belonged to the Congressional Country Club.

Dr. Camalier taught Sunday school at serveral churches in the Washington area for a number of years.

He is survived by his wife, the former Virginia Yates, of the home in Bethesda; three sons, C. Willard III, of Winston-Salem, N'C., George R., of Burke, Va., and Richard F., of Frederick, Md.; a daughter, Beverly, of Bethesda; a brother, Robert P., of Altamonte Springs, Fla., and three grandchildren.