Dr. Mark Halsey, MD is a double board-certified dermatologist practicing general, cosmetic, and pediatric dermatology in 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.
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.
Dr. Mark Halsey chose his career as a path to serving the members of his community. Twice a month, he travels to Manhattan to volunteer at Bellevue Hospital Center, offering his unique expertise as a double board-certified dermatologist in general and pediatric dermatology. 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 teach dermatology and pediatrics residents at NYU, and share his unique training and skillset with the community, including children in need who may be otherwise unable to access care.
Our Amazing Team
Our team of assistants is ready to take your call and help you have a fantastic appointment.
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.
Halsey Dermatology offers expert care in a variety of dermatology disciplines
Skin cancer, moles, acne, rashes, and more
Expert skin surgery done comfortably in our office
Pediatric dermatology from one of the foremost experts in the country
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! Our practice has current contracts with the following companies:
Blue Cross Blue Shield (Empire BCBC)
Empire Plan (NY State)
Humana (Choice Care)
Capital District Health Plan (Medcal)
Oxford (Freedom, Liberty, and Medicare)
Suffolk County Teachers / Island Group
UnitedHealthcare Community Plan
Prior to your appointment, please call our office or speak to your insurance company to determine if our practice participates with your particular plan.
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. All patients are screened for coronavirus risk prior to their home visit. For more information, or to schedule a home visit, please call our office at (631) 731-1099 and ask for Emma.
Cosmetic Dermatology and Laser
World class aesthetics and laser, with a portfolio featuring the latest brands and devices
Dr. Mark Halsey, MD has extensive knowledge and experience in cosmetic dermatology and laser and device-based therapeutics. He offers cosmetic consultations to patients who desire to enhance the quality and appearance of their skin.
At a cosmetic consultation appointment, Dr. Halsey listens to each patient's cosmetic concerns and offers suggestions as to which products and methods would work best for them. Using the latest Vectra H2 technology by Canfield Scientific, Dr. Halsey is 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 has extensive experience in using Botox and all other brands of botulinum toxin to address facial wrinkles. Halsey Dermatology offers Botox, Xeomin, Dysport, and Jeuveau. As a Revance Prestige Partner, we will be offering Daxi, the newest toxin to become FDA approved, as soon as it becomes available in early 2021.
Simply put, botulinum toxins like Botox soften facial wrinkles by reducing the tone and strength of the muscles that are causing them. When these muscles are relaxed the wrinkles become less prominent or are eliminated.
The exact length of the effect depends on the patient, but most patients get between 3-4 months of benefit. We anticipate that Daxi, when it becomes available will have a longer approved duration. Our office will be one of the first to offer this new product.
Dr. Mark Halsey will discuss the risks, benefits, and alternatives to botulinum toxin with you at your consultation. Nonetheless, most patients experience little to no side effects and are quite pleased with their results.
That’s a great question. Our office carries all brands of cosmetic use botulinum toxin as a convenience to our patients, knowing that patients who have experience with botulinum toxin may already have a preference. Dr. Halsey has experience with all four brands of toxin approved for cosmetic use, and can help you select what’s best for you.
Hyaluronic Acid Fillers
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.
Hyaluronic acid is a naturally occurring substance made by cells in our bodies. It has a remarkable ability to hold onto water, making it useful to plump up skin and restore lost volume.
In aesthetics, hyaluronic acid picks up where botulinum leaves off. Hyaluronic acids address wrinkles and sagging skin that occur when facial fat and volume is lost. These remarkable gels can also be used to rehydrate the surface of the skin with a microdroplet technique.
While it may vary, hyaluronic acid fillers generally last between 8 months and 2 years, depending on the exact product and the location it is placed.
The selection of the product depends on the location the product is being placed. We carry a wide selection of products, from Juvederm, Restylane, Belotero, Versa, and RHA. We will gladly help the selection of the product that would best address any particular issue.
One of the greatest things about hyaluronic acid fillers is that the result is immediate — a response is seen with each injection.
Hyaluronic acid fillers are FDA approved, and generally considered safe. All medical procedures have risks, and while patients may experience some discomfort and potential bruising, significant side effects are rare. A thorough discussion of risks, benefits and alternatives will be part of your hyaluronic acid filler visit.
Lasers and Devices
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 provided.
Fractional laser rejuvenation is a technique whereby a laser delivers energy to fractions or columns of the skin, leaving surrounding skin spared. The advantage of this technique is that with surrounding unaffected skin, these small treated columns of skin heal quickly, reducing unwanted downtime and leading to a more comfortable and manageable recovery.
Our practice offers both types of fractional laser rejuvenation — ablative and non-ablative, both of which we recommend depending on the needs of each patient. Our ablative rejuvenation technology is able to stimulate new columns of skin to form by breaking through the surface of the skin and penetrating as deep as the dermis (the second layer of skin). Ablative lasers create more dramatic effects, but with a longer recovery. Meanwhile, non-ablative technology stimulates new skin to form in a similar fashion, but without breaking the stratum corneum (the uppermost barrier layer of the skin). This technology often allows for a shorter recovery period.
Intense Pulsed Light is a rejuvenating treatment for the skin utilizing white (visible) light to treat unwanted brown pigment and fine vessels / redness in the skin.
IPL treats unwanted pigment and redness with minimal downtime. Most patients have temporary facial redness that lasts approximately 24 hours. Brown spots are typically somewhat darker until flaking off one to two weeks later.
Similar to most medical procedures, laser and device-based treatments do carry risks and benefits. These will be discussed with you at length at your consultation to empower you to make sound choices for treating your skin.
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.
Sag Harbor Office
3350 Noyack Rd
Sag Harbor, NY 11963
(Enter Burkeshire Court and take the driveway on the left as you enter)
(For submitting payments to our billing company)
Halsey Dermatology MSC#666
PO Box 830529
Birmingham, AL 35283-0529
All patients and providers are invited to call us at: (631) 731-1099.
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.
Our patient forms are available online for the convenience of our patients.
Your skin is important to us, and so is your health and the health of our employees. We remain open to provide dermatology services to our patients during this health crisis. We diagnose and treat 30+ skin cancers each month, treat precancerous skin conditions, and manage acute and chronic rashes with substantial effects on quality of life. To meet the needs of the community during this difficult time, we have taken the following additional safety measures to protect our patients and staff:
We offer online "virtual visits" with live/synchronous 2-way video and audio to allow patients to receive care while in the comfort and safety of their homes
All our staff will be wearing masks at all times while patients are in the office. Patients are required to wear masks while in the office, and may remove them as needed during their examination.
HEPA filters with UV sterilizers installed in all patient rooms and common areas.
Patients are screened for fever and coronavirus exposure risk upon arrival.
Patients will be isolated from each other in patient rooms to the greatest extent possible. Our goal is to have every patient in a private room within 2 minutes of arrival.
Skin cancer, moles, rashes, and more
Dr. Mark Halsey, MD is an expert at identifying and treating skin disease. He works hand-in-hand with primary care providers and specialists to assist in the most complex of cases.
He has expertise in diagnosing and treating:
Dry skin (xerosis)
Freckling and dyspigmentation
Hair loss (alopecia)
among many others
He performs skin biopsies to assist in diagnosis when medically necessary, and regularly discusses cases with dermatopathologists to determine the best course of management as needed for his patients.
Dr. Halsey is a skilled surgeon and procedural dermatologist, able to customize treatment plans for patients needing intervention for skin cancers and other growths. He is able to offer the latest treatments including PRP (platelet rich plasma) for male and female pattern hair loss, having been trained to use same RegenLabs technology innovated by his world-renowed colleagues at the Ronald O. Perelman Department of Dermatology at NYU.
Procedural dermatology that meets your needs
Dr. Mark Halsey has extensive experience with procedural dermatology having preformed thousands of dermatology procedures during his career. He offers excisions of everything from skin cancers to cysts using techniques to minimize scarring.
Procedures routinely offered include
Electrodessication and Curettage
Curettage and CO2 laser
Botox and Xeomin for hyperhidrosis (excess sweating)
Cryotherapy (freezing spray)
Skin tag removal
Foreign body removal
and much more!
World class treatment of male and female pattern hair loss
Dr. Mark Halsey, MD has the latest technology to offer platelet rich plasma to treat male and female pattern hair loss from the comfort of his office
His approach is patient centered. Rather than have a vision for how every patient's skin should be, he patiently collects information on the cosmetic interests and desires of each patient and formulates a custom plan and skin care regimen for each patient. He prefers subtlety and nuance to enhance the skin to provide a well-rested and youthful look, and tends to discourage patients from any procedure or treatment that would look overdone.
During residency, he received additional training in cosmetic dermatology, participating in the American Society for Dermatologic Surgery's Preceptorship Program under the supervision of world-renowned dermatologist, Dr. Thomas Rohrer, MD of SkinCare Physicians of Chestnut Hill. Dr. Halsey has extensive experience in using all brands of neurotoxins to address facial wrinkles. 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 all brands of hyaluronic acids. At a cosmetic consultation appointment, Dr. Halsey listens to each patient's cosmetic concerns and offers suggestions as to which products would work best for the desired result. His office purchases only authentic products directly from the manufacturer's offical US representative, never any knock-offs or imports.
Dr. Halsey's approaches are minimally invasive, but he understands that some patients require more extensive treatments. When appropriate, he refers patients to local plastic surgeons, and remains actively engaged in their care.
Child-friendly dermatology from one of the foremost experts in the country
Dr. Mark Halsey, MD completed fellowship in Pediatric Dermatology at the Boston Children's Hospital / Harvard University Department of Dermatology program.
He is an expert in skin disease in children, and is able to both relate to children, and communicate effectively with their families.