Jack practiced internal medicine with the Williamstown Medical Associates, a multi-specialty group of 22 physicians in western Massachusetts for nearly thirty years. He left clinical practice to enroll in the graduate program at Antioch University New England, and received a MS degree in management in l996. A graduate of Williams College, he received a medical degree from Johns Hopkins University in 1957, and post-graduate training at the Johns Hopkins Hospital and New York Hospital-Cornell Medical Center. He was a Rockefeller Foundation Fellow in Preventive Medicine at Makerere Medical College in Kampala, Uganda, in 1963-64. He is a Fellow of the American College of Physicians, and continues to maintain active membership in the Massachusetts Medical Society and the American Geriatrics Society.
Currently he is Chairman of CSR Corporation operating a long-term care facility in Bennington Vermont. He was a Trustee of Williamstown Savings Bank for 28 years, and Founding Chairman of MountainOne, a mutual holding company with three banks plus insurance and brokerage interests. Jack has served as a Founding Director of the Fund for Williamstown (an endowment for the town) and the SEE Fund (‘Sustaining Educational Excellence’ at the regional public high school). He served as a Selectman in Williamstown for six years, a Director of the New Hampshire Lakes Association, and is currently a Trustee of the Lakes Region Conservation Trust.
Jack is the author of several scientific papers, wrote a weekly column on geriatric health issues for the Berkshire Eagle, and is a contributing author/editor of Bear Island Reflections, a history of an island community in New Hampshire.