To deliver world-class dermatology and skin care to the entire Hamptons community, in a safe, clean, and comfortable practice,
led and owned by physicians.
To fortify our role as the leading general, cosmetic, procedural, and pediatric dermatology practice on Eastern Long Island, working in collaboration with other health care providers in the community.
Dr. Mark Halsey, MD is a double board-certified dermatologist practicing general, cosmetic, and pediatric dermatology on the South Fork. Dr. Halsey received his undergraduate degree in Mathematics from the Massachusetts Institute of Technology. He graduated from the University of South Florida College of Medicine, where he was a member of the Alpha Omega Alpha medical honor society, and served as president of his medical school class.
Dr. Halsey completed his internship at the world-renowned Massachusetts General Hospital (Harvard Medical School), followed by dermatology residency at the University of Massachusetts, where he served as Chief Resident in his final year. He then completed additional training in pediatric dermatology at Boston Children's Hospital (Harvard Medical School, Dept. of Dermatology) to obtain a second board certification in pediatric dermatology. He completed the American Society of Dermatologic Surgery Preceptorship program to gain additional expertise in cosmetic dermatology, and minimally invasive procedures of the skin.
He holds a faculty appointment at the Ronald O. Perelman Department of Dermatology at NYU, where he has taught residents and medical students as an Assistant Clinical Professor of Dermatology since 2016, and previously held a training appointment at Harvard Medical School.
Dr. Halsey is a Diplomate of the American Board of Dermatology, with dual board certifications in Dermatology and Pediatric Dermatology. He is a Fellow of the American Academy of Dermatology and the American Society for Dermatologic Surgery, and a member of the Society for Pediatric Dermatology.
His practice interests are in procedural, cosmetic, pediatric, and general dermatology. He maintains a clinically focused and patient-centered practice. He has multiple publications in peer-reviewed research journals, and currently serves as a reviewer for the Journal of the American Academy of Dermatology.
Mark Halsey has deep ties to the south fork, with family living in the Hamptons for the past 13 generations. He lives in Water Mill, with his wife, June, and his 3 children.
Ashton Wilson, MSPAS, PA-C is a board-certified New York-licensed Physician Assistant specializing in medical and cosmetic dermatology. She received her Masters Degree from Pace University’s PA program, receiving clinical training at many of NYC’s top medical centers including NYU Langone Health, Lenox Hill Hospital and Maimonides Medical Center.
Ashton is a Diplomate Fellow with the Society of Dermatology Physician Assistants, qualified to evaluate and treat a wide range of skin conditions for patients of varying ages, cultural backgrounds, and skin types. She is a member of the Society of Dermatology Physician Assistants, New York State Society of Physician Assistants, as well as the American Academy of Physician Assistants.
Ashton attended the University of Florida on fully paid presidential merit-based scholarship, graduating with her Bachelor’s degree in Health Sciences, with minor degrees in both Health Disparities in Society and Public Health. Born and raised in the panhandle of Florida, Ashton is well-versed in the long-term effects of sun exposure and strongly believes in the power of prevention and patient education regarding sun protection and skin cancer screenings.
Aimee Drexel is a licensed esthetician, with advanced certification in laser hair removal. She completed the esthetics program at New York Institute of Beauty in Islandia, NY followed by additional training at Berkowits School in Forest Hills, NY. She is a member of the Associated Skin Care Professionals and is always looking to further advance her knowledge and skills through continuing education.
Aimee is a local to the East End. She provides beauty and makeup product expertise, and helps advise patients on skincare routines. In addition to providing facial and esthetic treatments, she serves as our cosmetic patient concierge and liaison, enhancing the experience of patients receiving cosmetic treatments in our office.
Since starting our independent practice in 2018, we have been embraced by the Hamptons community, and proudly choose to give back to local arts and health organizations. In 2023 alone, Halsey Dermatology has provided over $20,000 in direct monetary support and sponsorships to community organizations including the Watermill Center, LongHouse, Bay Street Theatre, Hamptons International Film Festival, Southampton Hospital Foundation, and Bellevue Hospital dermatology education programs in NYC. Halsey Dermatology has provided thousands more in donations in-kind to support other local organizations at charity auctions and other events.
Dr. Mark Halsey regularly volunteers at Bellevue Hospital Center in NYC, treating recent child immigrants and other children who are underinsured or have limited access to healthcare. He is one of only roughly 300 fellowship-trained board-certified pediatric dermatologists in the entire United States, with his pediatric training occurring at arguably two of the most respected hospitals in the world, Massachusetts General Hospital and Boston Children's Hospital. His volunteer clinics in NYC allow him to share his knowledge and experience in pediatric dermatology with dermatology and pediatrics residents.Assistant Extraordinaire
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Our team of assistants is eager to help you get the best possible dermatology care. They help with scheduling your appointment, taking care of you while you visit our office, coordinating insurance coverage, and arranging follow-up care.
We strive to make our services accessible to the community. Our goal is to accept all insurance willing to offer us fair rates for the services we offer. Nonetheless, for those with a "narrow network" or who do not have insurance, we offer competitive self-pay rates. Please call our office at (631) 731-1099 to find out more! Dr. Mark Halsey has current contracts with the following companies:
We do not accept insurance as payment in full for plans in which we do not participate.
Prior to your appointment, please call our office or speak to your insurance company to determine if our practice participates with your particular plan. We do not participate with "health share" plans or other non-insurance entities, but patients may still see us using our self-pay rates, with payment due at time of service.
For those whose plans require a referral to see a specialist, it is each patient's responsibility to request a referral from their primary care physician in advance to ensure coverage for the visit.
For patients requiring an additional measure of privacy, Halsey Dermatology offers dermatology appointments offsite at a private home, office, or estate. Patients utilizing this service must agree to pay for travel expenses. For more information, or to schedule a home visit, please call our office at (631) 731-1099 and ask for Aimee.
Our providers have extensive knowledge and experience in cosmetic dermatology and laser and device-based therapeutics. We offer cosmetic consultations to patients who desire to enhance the quality and appearance of their skin.
During a cosmetic consultation, we listen to your cosmetic concerns and suggest products and treatments that would help you to reach your aesthetic goals. Using the latest Vectra H2 technology by Canfield Scientific, we are able to plan and simulate procedures in 3D, and track treatment results. We curate the best and most suitable treatments for each candidate with our wide range of offerings.
Dr. Halsey and Ashton Wilson have extensive experience in using Botox and other brands of botulinum toxin to address facial wrinkles. Halsey Dermatology offers Daxxify, Botox, Xeomin, Dysport, and Jeuveau. As a Revance Prestige Partner, we now offer Daxxify, the newest toxin to become FDA approved.
For deeper wrinkles, sagging skin, flattened lips, and other forms of volume loss, Dr. Halsey is an expert in the use of facial fillers, including hyaluronic acids such as Juvéderm, Restylane, RHA, Versa, and Belotero. Most importantly, his office purchases only authentic products directly from the manufacturer's offical US representative, never any knock-offs or imports. The safety and comfort of our patients always comes first and foremost.
In addition to botulinum toxin and hyaluronic acid fillers, we offer other cosmetic treatments for hair and skin rejuvenation including Kybella, Asclera, Regenlabs PRP, and minoxidil/dutasteride injectables.
Dr. Halsey offers in-office treatments using a number of laser and devices to address pigment, wrinkles, skin irregularities, blood vessels, birthmarks, benign skin lesions, unwanted hair, and other skin issues. Device-based treatments for male and female pattern hair loss are also available.
All patients and providers are invited to call us at (631) 731-1099
Existing patients may use our Patient Portal to communicate with staff, request refills, see results, and update medical history information.
Our Sag Harbor office is conveniently located at 3350 Noyack Rd, in the Burkeshire Court development. As you enter the Burkeshire Court complex, go left and follow the driveway to the rear building (Building A) where plentiful parking is available onsite.
From our beautiful new office in Sag Harbor, we serve the entire Hamptons community, including Riverhead, Westhampton, Westhampton Beach, Quogue, East Quogue, Hampton Bays, Southampton, North Sea, Noyack, Water Mill, Sag Harbor, North Haven, Shelter Island, Bridgehampton, Sagaponack, Northwest Harbor, Wainscott, East Hampton, Springs, Amagansett, Napeague, and Montauk.
Patients seeing us virtually should kindly complete their forms online, while patients who visit our office will be asked to complete their forms on-site.