Dr. N Hennessey, MD

Dr. N Hennessey, MD

Dermatology •  Male • Age 72

  
Accepting new patients
Telehealth services available
(212) 677-5555

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.


Locations

Hennessey Dermatology

Hennessey Dermatology161 Madison Ave Rm 6se New York, NY 10016
1
  • Call
  • Fax
  • Hours
    • Mon: closed
    • Tue: 10:00am - 7:00pm
    • Wed: 10:00am - 7:00pm
    • Thu: 12:00pm - 7:00pm
    • Fri: closed
    • Sat: 8:00am - 3:00pm
    • Sun: closed
  • Directions
Hennessey Dermatology386 Montauk Hwy Wainscott, NY 11975
2
  • Call
  • Fax
  • Hours
    • Mon: 9:00am - 5:00pm
    • Tue: closed
    • Wed: 11:00am - 6:00pm
    • Thu: 10:00am - 6:00pm
    • Fri: 9:00am - 6:00pm
    • Sat: 9:00am - 3:00pm
    • Sun: closed
  • Directions

At a Glance

  • Explains Conditions Well Patients said this doctor explains conditions well. See reviews
  • Hospital Satisfaction Patients said they were highly satisfied at this doctor's hospital. See hospitals
  • Practices at Top Hospital America's 250 Best Hospitals Award™ See hospitals

Dr. Hennessey's Reviews

Likelihood to recommend Dr. Hennessey

4.8

Based on 50 ratings

5 Stars
92%
(46)
4 Stars
4%
(2)
3 Stars
0%
(0)
2 Stars
0%
(0)
1 Star
4%
(2)
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My experience with Dr. Hennessey is extrordinaiuly positive
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D. M. – Mar 10, 2019
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Have been a patient for at least 10 years for various procedures and all have been successful
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M. M. – Mar 10, 2019
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Very compassionate and caring doctor who is always here for my needs.
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Anonymous – Dec 04, 2018
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Very kind, compassionate, and professional. Takes the time to spend with his patients with a high level of care. Always makes you feel comfortable and he has a fabulous bedside manner.
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M. F. – Dec 01, 2018
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He Knows what he is doing .
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Anonymous – Nov 06, 2018
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dr. hennessey was always informative and caring in all procdures performed on me.his medical capabilities are without question as well as his fealing of caring.
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James M. – Oct 19, 2018
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I've been a patient for years and have had many procedures - always with great skill and compassion !!!!
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Anonymous A. – Oct 09, 2018
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Dr. Hennessey is the best dermatologist I have ever experienced. Very detailed examination and excellent communication skills.
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Eileen W. – Oct 08, 2018
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Always willing to spend time with you and listen to issues. Does not dramatize, but clearly explains skin issues and what needs to be done.
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Anonymous – Oct 06, 2018
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I always feel i'm in expert hands.
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Rhoda M. – Sep 21, 2018
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I have been seeing Dr. Hennessey for almost twenty years. He is extremely professional and knowledgable. I have always had 100% confidence in his assessments of my conditions. I highly recommend Dr. Hennessey!
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Anonymous – Sep 11, 2018
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very helpful and pleasent staff
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Anonymous – Sep 09, 2018
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very good
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Anonymous – Sep 08, 2018
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Dr Hennessey's attention to detail and thoughtfulness make this a very satisfying experience.
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Anonymous – Sep 07, 2018
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I have been a patient for 10+ years and have a;ways been given outstanding care.
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Vernon F. – Jun 05, 2018
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Pleasant and trusting.
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Anonymous – Jun 04, 2018
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Dr. Hennessey is one of the best physicians I have ever met. He is smart, capable, friendly, communicative, and responsive. He is simply one of the best.
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Jun 04, 2018
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I have been a patient of Dr. Hennessey's since I was 21 years old, and I'm now almost 53 years old. Dr. Hennessey cleared up my acne in my 20's, diagnosed melanoma on my chest in my 30's (I have a family history of skin cancer, my maternal Grandmother died of melanoma). Now in my early 50's Dr. Hennessey is helping me with age related sun spots and other aging skin issues.
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Apr 25, 2018
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very good
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Apr 20, 2018
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complete
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Apr 09, 2018
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Insurance Check

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Dr. Hennessey accepts

Accepted insurance can change. Please double-check when making an appointment.

(212) 677-5555

Dr. Hennessey accepts the following insurance:

1199SEIU
Aetna
Aetna HMO
Choice Plus POS II
Anthem
Blue Access (Select Network)-NY
Empire (Select Network)-NY POS
National (BlueCard Basic) PPO
National (BlueCard) PPO
Blue Cross Blue Shield
Blue Card PPO
Blue Cross Blue Shield of Louisiana
BlueConnect HMO
Blue Cross Blue Shield of Massachusetts
Preferred Blue PPO
CareFirst Blue Cross Blue Shield
HealthyBlue 2.0
HealthyBlue Advantage
Cigna
EmblemHealth
GHI
Health Insurance Plan of Greater New York (HIP) PPO
Empire Blue Cross Blue Shield
Empire Blue Cross Blue Shield HMO
Fidelis Care
First Health (Coventry Health Care)
Humana
Choice Care PPO
Medicare
MultiPlan
MultiPlan PPO
PHCS Network PPO
Oxford Health Plans
Tricare
UnitedHealthCare
United Healthcare
WellCare

Background Check

No malpractice claims found for New York
No disciplinary actions found for the years we collect data
No board actions found for the years we collect data
Learn more about background checks

Practice Areas

Dermatologic Care

Dermatologists diagnose, treat and screen for conditions affecting the skin, including skin cancer, psoriasis, eczema, acne, rosacea, and hair loss.Compare with other Dermatologic Care specialists.

Typically treats 64% more than their peers

Based on claims data for 29 conditions and procedures

TreatmentsTreatment Frequency
Skin Infections
very high
very high

Treatment Frequency

Dr. Hennessey treats Skin Infections more than 99% of their peers

Dr. Hennessey treats this condition more than 99% of their peers

Nail and Nail Bed Infection
very high
very high

Treatment Frequency

Dr. Hennessey treats Nail and Nail Bed Infection more than 99% of their peers

Dr. Hennessey treats this condition more than 99% of their peers

Ringworm
very high
very high

Treatment Frequency

Dr. Hennessey treats Ringworm more than 98% of their peers

Dr. Hennessey treats this condition more than 98% of their peers

Cosmetic Dermatology

Cosmetic dermatologists diagnose and treat condition of the skin that affect appearance, such as age spots, wrinkles, unwanted hair, and acne scars.Compare with other Cosmetic Dermatology specialists.

Typically treats 63% more than their peers

Based on claims data for 7 conditions and procedures

TreatmentsTreatment Frequency
Acne
very high
very high

Treatment Frequency

Dr. Hennessey treats Acne more than 95% of their peers

Dr. Hennessey treats this condition more than 95% of their peers

Hair Loss
normal
normal

Treatment Frequency

Dr. Hennessey treats Hair Loss more than 83% of their peers

Dr. Hennessey treats this condition more than 83% of their peers

Excision of Skin Lesion
normal
normal

Treatment Frequency

Dr. Hennessey performs Excision of Skin Lesion more than 74% of their peers

Dr. Hennessey performs this procedure more than 74% of their peers

Check Dr. Hennessey's experience treating your condition or procedure

Dr. Hennessey's conditions and procedures:

  • Abscess or Cyst Drainage or Aspiration
  • Abscess or Fluid Incision and Drainage
  • Acanthosis Nigricans
  • Acne
  • Acne Surgery
  • Actinic Keratosis
  • Allergic Reaction
  • Athlete's Foot
  • Atopic Dermatitis (Eczema)
  • Autoimmune Diseases
  • Basal Cell Carcinoma
  • Benign Tumor
  • Birthmark
  • Boil
  • Breast Diseases
  • Burn Injuries
  • Cancer
  • Candidiasis of Skin and Nails
  • Canker Sore
  • Cellulitis
  • Cold Sore
  • Dermatitis
  • Dermatitis Due to Drugs
  • Destruction of Benign Skin Lesion
  • Destruction of Malignant Skin Lesion
  • Destruction of Penile Lesion
  • Dry Skin
  • Eczema and Contact Dermatitis Due to Cosmetics
  • Erythema Multiforme
  • Excessive Sweating
  • Excision of Benign Skin Lesion
  • Excision of Skin Cancer
  • Excision of Skin Lesion
  • Excision, Shaving, or Destruction of Skin and Subcutaneous Tissue (incl. Mohs Micrographic Surgery), Tissue Transfer
  • Folliculitis
  • Foot Conditions
  • Fungal Infections
  • Fungal Nail Infection
  • Genital Herpes
  • Genital Warts
  • Granuloma of Skin
  • Hair Loss
  • Henoch–Schönlein Purpura (HSP)
  • Herpes Simplex Infection
  • Hidradenitis
  • Hives
  • Impetigo
  • Incision and Removal of Foreign Object
  • Intertrigo
  • Itchy Skin
  • Jock Itch
  • Kaposi's Sarcoma
  • Keloid Scar
  • Leg and Foot Ulcers
  • Lice
  • Lichen Planus
  • Lipomas
  • Lyme Disease
  • Lymphangioma
  • Melanoma
  • Moles (Benign Skin Lesions)
  • Molluscum Contagiosum Infection
  • Nail and Nail Bed Infection
  • Non-Cosmetic Chemodenervation
  • Parapsoriasis
  • Pemphigoid
  • Pityriasis Rosea
  • Plantar Wart
  • Poison Ivy, Poison Oak, or Poison Sumac Poisoning
  • Psoriasis
  • Psoriatic Arthritis
  • Purpura
  • Rash
  • Ringworm
  • Rosacea
  • Scabies
  • Seborrheic Dermatitis
  • Seborrheic Keratosis
  • Shaving of Skin Lesion
  • Shingles
  • Skin Cancer
  • Skin Discoloration
  • Skin Infections
  • Squamous Cell Carcinoma
  • Sunburn
  • Telogen Effluvium
  • Tinea Versicolor
  • Ulcer
  • Varicose Veins
  • Warts

About Me

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.

Specialties

  • Dermatology

Education

New York University Medical Center
Fellowship Hospital
Harvard University's The Deaconess/Brigham Hospital
Residency Hospital
1976
Beaumont Hospital - Royal Oak Campus
Internship Hospital
1975
Michigan State University
Medical School
1971
Aquinas College
Undergraduate School

Languages

  • Romanian
  • Spanish
  • Greek
  • English

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Please call the office to learn more. (212) 677-5555

Frequently Asked Questions

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Affiliated Hospitals

Check the quality of care at hospitals where Dr. Hennessey treats patients.

Learn more

NYU Langone Health Tisch Hospital

New York, NY

74% Patient experience rating, 5% higher than the national average

  • America's 250 Best Hospitals Award™ (2020, 2019)

Stony Brook Southampton Hospital

Southampton, NY
  • America's 100 Best Hospitals Award™ (2020)
  • America's 250 Best Hospitals Award™ (2020)