Mark A. Halsey MD, Dermatologist (Pediatric)

Mark A. Halsey MD

Dermatologist | Procedural Dermatology

3350 Noyack Rd Bldg A Sag Harbor NY, 11963



Dr. Mark Halsey is a dermatologist practicing in Sag Harbor, NY. Dr. Halsey specializes in skin care. Dermatologists evaluate and manage both common and uncommon skin conditions. These conditions include acne, psoriasis, warts, skin infections, atopic dermatitis, herpes simplex and more. Dermatologists are also experts in more complex skin diseases like impetigo, hidradenitis and milaria. Dr. Halsey diagnoses skin problems and develops unique treatments plans for each individual patient.

Education and Training

University of South Florida College of Medicine M.D. 2011

Massachusetts Institute Of Technology Bachelor of Science

Board Certification

American Board of Dermatology

Pediatric Dermatology (Dermatology)

DermatologyAmerican Board of DermatologyABD- Pediatric Dermatology- 2015

Provider Details


Areas of expertise and specialization

Medical Dermatology, Surgical Dermatology, Cosmetic Dermatology, Pediatric Dermatology

Faculty Titles & Positions

  • Clinical Assistant Professor NYU 2016 - Present


  • General Dermatology
  • Medical Dermatology
  • Dermatologic Surgery
  • Cosmetic Dermatology

Professional Memberships

  • Professional Member American Academy of Dermatology 
  • Professional Member American Medical Association 
  • Professional Member Society for Investigative Dermatology 
  • Professional Member Greater New York Dermatologic Association 


  • University of Massachusetts   2015


  • Harvard/Boston Childrens Hospital   2016

Mark A. Halsey MD's Practice location

Halsey Dermatology

3350 Noyack Rd Bldg A -
Sag Harbor, NY 11963
Get Direction
New patients: 631-731-1099

Request An Appointment With Mark A. Halsey MD | Dermatologist | Procedural Dermatology

Please note that this request is not considered final until you receive email notification confirming the details.

In the event the doctor is not yet registered with FindaTopDoc, we will contact the office on your behalf in an effort to secure your appointment.

Mark A. Halsey MD's reviews

Write Review

Patient Experience with Dr. Halsey


Based on 1 reviews

Mark A. Halsey MD has a rating of 5 out of 5 stars based on the reviews from 1 patient. FindaTopDoc has aggregated the experiences from real patients to help give you more insights and information on how to choose the best Dermatologist in your area. These reviews do not reflect a providers level of clinical care, but are a compilation of quality indicators such as bedside manner, wait time, staff friendliness, ease of appointment, and knowledge of conditions and treatments.

Recommended Articles

  • 5 Tips to Avoid Melanoma

    Melanoma is a very common type of skin cancer. In some countries, melanoma rates are increasing despite the fact that it is one of the most preventable cancers. Some people face more risk of melanoma than others. Once you understand your risk, you will be more inclined to take preventive measures to...

  • Eating Fruits and Vegetables for Radiant Skin

    According to a new study, eating more fruits and vegetables is a natural way to have a healthy skin hue. Researchers suggest that the different shades of red and yellow noticed in the skin of white people are based on the number of servings of fruit and vegetables they eat daily. Fruits and...

  • What is Scabies?

    Scabies is a skin disease caused by the infestation of the mite, Sarcoptes scabiei. These organisms are too small to be seen with naked eye. Infestation by this mite is common worldwide. People of all age groups may be affected by this skin condition and is very common in areas that are congested,...

  • What are the Topical Treatments for Psoriasis?

    The most popular treatment options for psoriasis are topical applications, like creams, lotions, and foams. These formulations are applied on the skin or scalp directly to reduce the symptoms. There are a number of options available for the treatment of psoriasis are unique to each individual who...

  • Protect Your Skin from the Cold Winter Air

    Winter, characterized by cold winds and low humidity, is a nightmare for beautiful skin whether you have eczema, psoriasis, or seborrheic dermatitis. Ella L. Toombs, MD, a board-certified dermatologist and director of Aesthetic Dermatology of Dupont Circle, in Washington, D.C, says that it is a...

  • How Is Sarcoidosis Diagnosed?

    What is sarcoidosis?Sarcoidosis is an inflammatory disease, which is characterized by the growth of granulomas or tiny collections of inflammatory cells in various parts of the body. When the immune system is slowed down and when these numerous clumps form, they tend to interfere with the organ’s...

Nearby Providers

Nearest Hospitals



3350 Noyack Rd, Sag Harbor, NY 11963, USA
Head northwest on P Rd toward Noyack Rd
459 ft
Turn right onto Noyack Rd
0.7 mi
Turn left onto Noyack-Long Beach Rd
1.6 mi
Continue onto Short Beach Rd
0.2 mi
At the traffic circle, continue straight onto Ferry Rd
2.0 mi
Take the South Ferry to Shelter Island
0.4 mi
Continue straight onto S Ferry Rd
1.4 mi
At the traffic circle, take the 3rd exit and stay on S Ferry Rd
1.0 mi
At the traffic circle, take the 1st exit onto NY-114 N/N Ferry Rd
1.6 mi
Turn right onto Cedar Ave/N Ferry Rd
0.1 mi
Continue onto Clinton Ave
0.2 mi
Clinton Ave turns left and becomes Summerfield Pl
0.1 mi
Take the North Ferry to GreenportToll road
1.0 mi
Continue straight to stay on North FerryToll road
85 ft
Turn right onto NY-114 N
0.1 mi
Turn right onto Front St
0.2 mi
Front St turns left and becomes Main Rd
0.6 mi
Turn right onto Manor Pl
0.1 mi
Turn right
230 ft
201 Manor Pl, Greenport, NY 11944, USA



3350 Noyack Rd, Sag Harbor, NY 11963, USA
Head northwest on P Rd toward Noyack Rd
459 ft
Turn left onto Noyack Rd
6.4 mi
Noyack Rd turns left and becomes N Sea Rd
1.4 mi
Slight right onto Sandy Hollow Rd
0.9 mi
Continue straight onto Southampton Bypass
0.7 mi
Continue straight onto NY-27 W/Southampton BypassContinue to follow NY-27 W
10.1 mi
Take exit 64N for County Road 104 N toward Riverhead
0.5 mi
Merge onto Quogue Riverhead Rd
1.1 mi
At the traffic circle, take the 1st exit and stay on Quogue Riverhead Rd
2.0 mi
Continue onto Riverleigh Ave
0.9 mi
At the traffic circle, take the 1st exit onto Peconic Ave
0.2 mi
Turn right onto E Main St
115 ft
Turn left onto Roanoke Ave
1.3 mi
At the traffic circle, take the 1st exit onto Old Country Rd
449 ft
Turn leftDestination will be on the left
348 ft
1300 Roanoke Ave, Riverhead, NY 11901, USA



3350 Noyack Rd, Sag Harbor, NY 11963, USA
Head northwest on P Rd toward Noyack Rd
459 ft
Turn left onto Noyack Rd
0.8 mi
Turn left onto Millstone Rd
3.3 mi
Turn right onto Scuttle Hole Rd
466 ft
At the traffic circle, continue straight to stay on Scuttle Hole Rd
2.3 mi
Continue straight to stay on Scuttle Hole Rd
335 ft
Turn right onto NY-27 W/State Rte 27 W/Montauk Hwy/POW/MIA Memorial Highway W
2.2 mi
Continue straight onto NY-27A
0.7 mi
Turn left onto Old Town Rd
0.4 mi
Turn right onto Meeting House Ln
269 ft
Turn left
72 ft
Turn rightDestination will be on the left
184 ft
240 Meeting House Ln, Southampton, NY 11968, USA