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Call us: (914) 269-1900


Gastroenterology


​Digestive health is important to your overall health and well being. Our expert gastroenterologists promote digestive health as well as diagnose and treat diseases of the digestive tract.  Westchester Gastroenterology at Phelps Hospital has expertise in managing the full spectrum of gastroenterology and hepatology, which includes gastrointestinal, digestive, and liver disorders. Learn More



Floyd C. Byfield M.D.
Office Location: 777 North Broadway 3rd Floor Suite 305, 
Sleepy Hollow, NY 10591

Phone: (914) 366-5420

Barry E. Field, M.D.

Office Location: 777 North Broadway 3rd Floor Suite 305, Sleepy Hollow, NY 10591
Phone: (914) 366-5420


Christopher A. Martin, M.D.

Office Location: 777 North Broadway 3rd Floor Suite 305, Sleepy Hollow, NY 10591
Phone: (914) 366-5420


Peter H. Stein, M.D.

Office Location: 777 North Broadway 3rd Floor Suite 305, Sleepy Hollow, NY 10591
Phone: (914) 366-5420


Diana Winston-Comartin, M.D., M.P.H.

Office Location #1: 777 North Broadway, 3rd floor, Suite 305, Sleepy Hollow, NY 10591
Phone #1: 
(914) 366-5420
Office Location #2: 
440 South Riverside Ave, Croton On Hudson, NY 10520
Phone #2: 
 (914) 269-1700
Office Location #3: 
11 Ashford Ave, 2nd floor (above Walgreens), Dobbs Ferry, NY 10522
Phone #3: 
(914) 269-1990