Meet Our Providers
Dr. Kenneth Mark
As a Cornell graduate, Dr. Mark completed his residency at the world-renowned NYU Department of Dermatology where he was a former 20+ year Clinical Professor. As a twice-voted “Best Doctor” in America by his peers, this prestigious clinical honor is the highest recognition a physician can receive inclusive of the top 5% of doctors.
Dr. Mark, who has offices in Southampton, East Hampton, New York City and Aspen, is a nationally recognized injectables expert, who specializes in Botox and fillers such as Juvéderm and Voluma. Dr. Mark says, “Voluma is the greatest filler ever invented for both adding volume and lifting the face! When done properly, the results are incredibly natural.”
Dr. Mark spent an additional two years of training after his dermatology residency to become an expert in Mohs’ skin cancer surgery, plastic reconstructive surgery, and cosmetic procedures – including lasers, peels, and injectables such as Botox and Fillers. Mohs skin cancer surgery, is a minimally invasive treatment for skin cancer that minimizes scarring and has the highest cure rate.
Dr. Mark prides himself on taking the knowledge of anatomy and precision he learned from his skin cancer and plastic reconstruction training and applying it to the cosmetic procedures he performs. A perfect example is the recently approved, non-invasive treatment for fat removal under the chin, called Kybella. “This is one of the most gratifying procedures I perform, as simple injections literally melt the fat away.”
During his fellowship, which had a focus on cosmetic procedures and appearance, Dr. Mark realized that patients wanted a regimen of products to use at home. Unlike, most “Dr.” lines of skincare products, his are not mass-produced and not “label-slapped.” Always striving to be the best and to offer the best products, Dr. Mark insisted on his skincare line being manufactured exclusively for him and YOU! This journey has taken longer and been more expensive, but was well worth the wait.
Dr. Mark is the pioneer of Astaxanthin – a Caroteniod up to 1,000 times as potent an antioxidant as Vitamin C. He was also one of the first to put Green Tea into his products.
The latest and greatest Dr. Kenneth Mark has to offer is his 5 new technologically advanced, cutting edge anti-aging skincare products. “Simply put, this is the most comprehensive and clinically active anti-aging line on the market,” states Dr. Mark. Within 7 days, your skin will undergo transformation from the unique blend of antioxidants, stem cells, peptides, exfoliating agents, and botanicals.
Christina DeMartino, PA-C
Christina DeMartino is a New York City-trained dermatology physician assistant with over 14 years of clinical experience. She specializes in aesthetics and has been working in cosmetic and medical dermatology in Manhattan and the Hamptons at various high-level practices since 2012. Christina also opened her own aesthetic practice on the North Fork of Long Island in the summer of 2025 where she lives. She graduated from Wagner College's accelerated physician assistant program, receiving both her bachelor's and master's degrees in just 5 years.
Christina has a natural ability to connect with patients and understand their aesthetic goals. She listens carefully and is able to formulate the right plan - one that delivers effective yet natural results. Due to her thoughtful approach, her patients leave feeling refreshed and still looking like themselves. Christina takes a holistic approach to aesthetic medicine, treating the face as a whole rather than individual features and educating her patients on preventative and at-home care. Christina is well-versed in virtually all cosmetic procedures, including injectables, microneedling, and laser treatments, and has particular expertise in Ultherapy skin tightening, for which she pioneered several innovative techniques.
Most recently, Christina was awarded Dan's Papers Best of the Best for Best Botox in 2024.
Christina is originally from the Boston area and now lives on the East End with her husband and daughter. In her spare time, she enjoys cooking, fashion, photography, traveling, interior design, and gardening.