Dr. N. Patrick Hennessey, MD

Dr. N. Patrick Hennessey, MD

Dermatologist (Skin Specialist)

49 Years of Experience


Accepting patients


    Dr. N. Patrick Hennessey is a Dermatologist serving the New York and Wainscott area for more than 40 years. Dr. Hennessey is experienced in Medical Dermatology, Dermatologic Surgery and Cosmetic Dermatology. He is a professional member of the American Academy of Dermatology, the American Medical Association and the Society for Investigative Dermatology.

    Medical Specialties and Areas of Expertise

    Dermatologist (Skin Specialist)

    Education & Training

    Harvard University's the Deaconess/Brigham Hospital (Residency)

    New York University Medical Center (Residency)

    New York University Medical Center (Fellowship)

    Doctorate - Michigan State University

    Board Certifications

    American Board of Dermatology





    Medical Conditions Treated

    conditions treated by a Dermatologist (Skin Specialist), like Dr. N. Hennessey, may include:

    Please contact Dr. Hennessey's office for more information or to schedule a consultation.


    Top Insurances

    • Aetna

    • Blue Cross Blue Shield (BCBS)

    • Bravo Health

    • Cigna

    • Medicare

    • UnitedHealthcare

    View All Insurances


    Hennessey Dermatology

    161 Madison Avenue

    Suite 6SE

    New York, NY 10016

    (212) 677-5555

    Get Directions | View Website

    Hennessey Dermatology

    386 Montauk Hwy.

    Wainscott, NY 11975

    (631) 537-6020

    Get Directions | View Website

    Ratings & Reviews

    Rating Star


    Overall rating

    Based on 45 reviews

    Check mark

    Office Experience

    98% of patients found the doctor and staff friendly and the office clean and modern

    Check mark


    99% of patients felt that their time spent with the doctor was meaningful and impactful and that any follow ups were addressed quickly

    Check mark

    Appointment Booking

    94% of patients found it easy to book an appointment

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    99% of patients were satisfied with the doctor's diagnosis and explanation of their condition

    Patients give Dr. N. Hennessey an Excellent overall experience rating of 5 out of 5 stars. Dr. Hennessey has been rated and reviewed by 45 patients. These ratings are based on a variety of factors, including the amount of time patients spent with Dr. Hennessey, his bedside manner, appointment waiting time, friendliness of the office staff, clarity of diagnosis, and more.

    Read Patient Reviews


    Memberships & Associations

    American Academy of Dermatology

    Professional Member

    American Medical Association

    Professional Member

    Society for Investigative Dermatology

    Professional Member

    Greater New York Dermatologic Association

    Professional Member

    Frequently Asked Questions

    Is N. Hennessey accepting new patients?

    Yes, N. Hennessey is accepting new patients at this time.

    Does N. Hennessey offer online booking?

    Please contact Dr. Hennessey's office at (212) 677-5555 for information about online booking, telehealth, or to schedule an appointment.

    Does N. Hennessey offer telehealth appointments?

    Please contact Dr. Hennessey's office at (212) 677-5555 for information telehealth appointment availability or for scheduling assistance.

    Which language(s) does N. Hennessey speak?

    N. Hennessey speaks English, Greek, Romanian and Spanish.

    Which board certifications does N. Hennessey have?

    N. Hennessey is certified by the American Board of Dermatology.

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