Born to David Richard Greene Clark and Ruth Marie (Merritt) Clark in Johnson City, New York.
Earns a Bachelor of Arts in biology from the State University of New York (SUNY) at Binghamton.
Marries Darlene Elizabeth Wombacher on August 22.
Obtains a Doctor of Medicine from SUNY, Upstate Medical Center.
Receives the Stewart Gurman Award from the State University of New York.
Is an assistant professor of pediatrics at SUNY Health Science Center at Syracuse until 1984.
Receives the Pediatrics Research Award from the American Academy of Pediatrics, of which he is a fellow.
Is an associate professor of pediatrics at the New York Medical College/Westchester County Medical Center until 1988.
Serves Louisiana State University as a professor of pediatrics and vice-chairman of pediatrics until 1998.
Is named Physician of Year by the Parent Care Association.
Receives the Seale Harris Award from the Southern Medical Association; Is an assistant scoutmaster with Boy Scouts of America New Orleans until 1998.
Is a member of neo/peri medicine of the American Board of Pediatrics in Chapel Hill, NC through 2004.
Serves the Albany Medical College as a professor of pediatrics and chairman of the Department of Pediatrics until retiring in 2019.
Is involved with the Boy Scouts Twin River Council until 2020.
Receives the American Academy of Pediatrics Special Achievement Award.
Holds the Jury Elliott Memorial Lecture for the Southern Association of Neonatologists.
Receives the American Academy of Pediatrics Advocacy Award.