William Valentine Tamborlane Jr.

William V. (Bill) Tamborlane was born on August 25, 1946, in the Bronx, New York, to William and Eleanor Tamborlane. He attended Bergen Catholic High School in Oradell, New Jersey, and graduated Phi Beta Kappa in Chemistry from Georgetown University in 1968 and continued his education there through medical school and residency, completing his training as Chief Resident before being accepted into a Post-doctoral fellowship in Pediatric Endocrinology at Yale University in 1975. He and his wife, Kathleen, relocated to New Haven with their two daughters, and from the moment he arrived, Bill intended to remain at Yale for the entirety of his career — a commitment he honored fully. Moving to Madison in 1977 was a highlight of his family’s life and Bill volunteered to coach little league whenever he had time and he recruited fellow Yale faculty to play basketball at Surf Club during the summer months.

At Yale School of Medicine, he was named Section Chief of Pediatric Endocrinology in 1985 and went on to become a full professor in 1986. He dedicated himself to securing funding and assembling a multidisciplinary team of clinicians, researchers, social workers, and dietitians to build a type 1 diabetes program that would earn recognition in U.S. News & World Report’s “Best Of” rankings for many consecutive years. Dr. Tamborlane was among the most distinguished academic pediatric endocrinologists and diabetes researchers of his generation. He spearheaded, with his colleague Dr. Robert Sherwin, the concept of delivering insulin via a continuous pump. He was a key researcher in the landmark Diabetes Control and Complications Trial (DCCT), the results of which were published in the New England Journal of Medicine in 1979. At the time of his retirement, his curriculum vitae listed over one thousand articles, book chapters, and guidance documents. Throughout this period, he was grateful to acknowledge the profound dedication of his wife, Kathleen, who was raising their three children, Melissa, Amy, and James at home while simultaneously pursuing a graduate degree in School Psychology.

Bill accomplished more in his lifetime than most could aspire to — the result not only of his extraordinary energy and drive, but of his deep conviction that his work could improve lives. He was genuinely humble about his achievements and never lost sight of the fact that his success was inseparable from those around him. He cherished his wife and family, acknowledging the sacrifices that a career of this scope had sometimes required of them. As a grandfather to eight grandchildren, he found great joy in their company — noting with warmth and humor that loving them came easily, in part because they went home at the end of the evening. They treasured his wit and his stories, and they carry his memory as a source of pride and inspiration.

His family wishes it to be known that the final chapter of his life was one of profound difficulty. A diagnosis of dementia altered Dr. Tamborlane’s world in ways he could never have foreseen. He had long imagined that he would one day be wheeled from his Yale office simply because he had grown too old to continue — but he could not have anticipated that his remarkable career would conclude with a debilitating cognitive decline. Yale was his second home, and his family knows with certainty that he missed it deeply in his final years.

Dr. Tamborlane is survived by his beloved wife, Kathleen; his brother, Roger (Paula) Tamborlane; his daughter, Melissa (John) Wilson, and their children, Lilly, Miles, and Shea; his daughter, Amy (Mark) Steffen, and their children, Anna, Paige, and Luke; and his son, James (Brisa) Tamborlane, and their children, Davis and Mateo. He was preceded in death by his parents, William and Eleanor Tamborlane, and his brother, Jeffrey Tamborlane.

Services will be held at St. Margaret Church at 10am on 5/30/26.

In lieu of flowers, please consider a donation to either of the following:

RE: In Memory of William V. Tamborlane

Attn: Zsuzsuanna Somogyi (Director of Development)

Yale School of Medicine - Diabetes Research Program

P.O. Box 7611

New Haven, CT 06519

Checks payable to Yale University

OR

Hartford Health Care Hospice

81 Meriden Avenue

Southington, CT 06489