Bayard D. Clarkson American physician, hematologist and oncologist dead at age 99
an American physician, hematologist and oncologist, died on December 20, 2025. Born in New York City on July 15, 1926, he graduated from Yale and earned his M.D. from the Columbia University College of Physicians and Surgeons in 1952. He… · 20 December 2025 · December 2025