The Nathaniel Witherell
70 Parsonage Road
Greenwich, CT 06830
(203) 618-4200

George Cossifos, Director of Admissions – 203-618-4232
Nicole Roselle-Smith, Admissions Manager – 203-618-4314
Ann Callahan, Admissions Representative – 203-413-6812

Executive Staff

Allen Brown, Executive Director
Francis Walsh, MD, Medical Director
Edward Omondi, RN, Director of Nursing
Margaret Wayne, RN, Assoc. Director of Nursing
Ailinh Tu, OTR, Rehabilitation Manager
George Cossifos, Admissions Manager
Justine Vaccaro, LMSW, Director of Social Work
Carissa Ronish, Therapeutic Recreation Director
Kyle Cimiotti, Dietary Director
Tom Ellis, Director of Financial Operations

For more information or to schedule a tour or a consultation please use the form below:

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Faces of Witherell

Fredson Hamlet

Fredson Hamlet

Food Service Worker
A cherished Witherell employee for the past 32 years, Fredson is a past recipient of the "Outstanding Team Player Award" from the Town of Greenwich for his great service.