About COHEN, BERGMAN & KLEPPER M.D.'S P.C. Cohen, Bergman & Klepper M.d.'s P.c. is an internal medicine provider established in Huntington, New York specializing in internal medicine (cardiovascular disease) . The NPI number of Cohen, Bergman & Klepper M.d.'s P.c. is 1457451379 and was assigned on September 2006. The practitioner's primary taxonomy code is 207RC0000X..