McGregor J. Ferguson, an Annapolis veterinary cardiologist, died Sunday of undetermined causes at his Millersville home.
He was 41.
"We are waiting for a cause of death pending the results of an autopsy," said his father, Dr. Ray Ferguson of Federal Hill.
McGregor John Ferguson was born in Baltimore and raised in Arnold. He was a 1989 graduate of Severna Park High School, where he played lacrosse and football.
After earning a bachelor's degree in 1993 from Swarthmore College, where he was a member of the lacrosse team, he earned his veterinary degree in 1999 from Virginia-Maryland Regional College of Veterinary Medicine, which is part of Virginia Polytechnic Institute and State University in Blacksburg.
Dr. Ferguson completed a surgical internship at the Animal Medical Center in New York City, and since 2000 had been associated with Chesapeake Veterinary Cardiology Associates in Annapolis.
His areas of specialization included client education, cardiac surgery, cardiac catheterization. He was board-certified by the American College of Veterinary Internal Medicine, the College of Cardiology.
Dr. Ferguson was an avid Ravens, Orioles and Terps fan. He kept a boat on the Severn River and enjoyed fishing with his son and swimming. He also was a Little League coach.
A memorial service will be held at 7 p.m. Thursday at St. Martins-in-the Field Episcopal Church, 375 Benfield Road.
In addition to his father, Dr. Ferguson is survived by his wife of 10 years, the former Christina Marie Marselle, who is also a veterinarian; a son, Alexander Ferguson, 5; two daughters, Grace Ferguson, 9, and Claire Ferguson, 6; his mother, Jan Ferguson of Federal Hill; and a brother, Dr. Andrew Ferguson of Chestertown.