Dr. N Hennessey, MD is a Dermatologist in New York, NY and has over 45 years of experience in the medical field. Dr. Hennessey has more experience with Dermatologic Care and Cosmetic Dermatology than other specialists in his area. He graduated from Michigan State University medical school in 1975. He is affiliated with medical facilities NYU Langone Health Tisch Hospital and Stony Brook Southampton Hospital. He is accepting new patients and has indicated that he accepts telehealth appointments. Be sure to call ahead with Dr. Hennessey to book an appointment.