Longtime American Heart Association volunteer Kenneth Daniel Bloch, M.D., 58, died Saturday after a long illness. Bloch had served on the association’s national board of directors and as vice chairman of the committee that planned Scientific Sessions, the association’s largest annual science meeting.

“With the passing of Ken Bloch, the American Heart Association has lost a superb scientist, a dedicated volunteer and a beloved gentleman,” said AHA President Elliott Antman, M.D.

“Ken has played a vital role in the governance and leadership of the American Heart Association over a number of years,” said Nancy Brown, CEO of the American Heart Association. “In every volunteer situation Ken provided thoughtful and inspiring leadership. His loss saddens us all.”

Bloch chaired the AHA’s Research Committee and Cardiopulmonary, Critical Care, Perioperative and Resuscitation (3CPR) Council and was a member of the AHA Science Advisory and Coordinating Committee, the highest scientific body of the organization.

He received the AHA’s 2013 Meritorious Achievement Award and the 2014 Distinguished Achievement Award from the association’s 3CPR Council.

He received a joint appointment with Massachusetts General Hospital’s department of anesthesia, critical care and pain medicine and received Harvard Medical School’s William T. G. Morton Professorship in 2007.

Bloch began his career at Massachusetts General Hospital in Boston in 1981 as a medical resident, joined the cardiology division in 1990, and became a principal investigator in the Cardiovascular Research Center in 1992. He focused his research on cardiopulmonary diseases and congestive heart failure.

Dedicated to mentoring three generations of cardiac fellows, he took a deep personal interest in their career development.

Born in New York City, Bloch grew up in Brookline, Massachusetts. He earned his undergraduate and medical degrees from Brown University in 1978 and 1981.

He is survived by his father, Kurt Bloch, M.D.; his mother, Margot Bloch; his brother Donald Bloch, M.D.; and sister-in-law Lisa Diller, M.D. His father and brother are both longtime Massachusetts General Hospital physicians, according to a statement from the hospital.

A funeral service for Bloch was held Monday at the Stanetsky Memorial Chapel in Brookline, Massachusetts.

The Kenneth D. Bloch Memorial Fund at the American Heart Association has been established to honor Bloch. Donations may be directed to this fund at The American Heart Association, 7272 Greenville Ave., Dallas, TX 75231.

“Please join me in expressing our sympathy to Ken’s family, and please consider a donation to the Kenneth D. Bloch Memorial Fund,” Antman said.