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We provide a wide range of the highest dermatologic care to patients throughout the greater New York City and Long Island area. At our practice in the Hamptons, you can find a comfortable and relaxing environment while you enjoy the extensive experience of our board-certified dermatologists and skin care experts. With expertise in a variety of medical, surgical, and cosmetic dermatology, we can offer each patient a comprehensive experience for their most pressing skin problems and aesthetic goals.

Our Hamptons Office

Our brand-new, state-of-the-art Hamptons office is centrally located in Water Mill, NY, only five miles from Southampton, three miles from Bridgehampton, and 10 miles from East Hampton. Each spacious exam room features windows with treetop views providing privacy while bringing in the outside serenity of Water Mill. The office opens up to a private, landscaped parking lot exclusively for our patients. We provide a luxurious and serene environment so that you can fully relax during your skin treatments, consultations, and medical procedures.

We also offer two locations in the heart of Manhattan: Union Square and Central Park, serving patients across the five boroughs of New York City, and the entire Tri-State area.

Our Services and Treatments

Our board-certified dermatologists provide medical, surgical, and cosmetic dermatology services for the face, neck, and body at our Hamptons location. During a consultation, our physicians will assess your skin concerns and work with you to develop a personalized treatment plan.

Skin Conditions

We offer dermatological expertise for a variety of concerns and skin types. Anti-aging and skin conditions we treat include sun damage, age spots, facial wrinkles, volume loss, sagging skin, and dark spots. Other conditions we treat are acne, rosacea, melasma, hair loss, spider veins, and scars, among many other common skin conditions. Our physicians are also highly trained in skin cancer diagnosis and medicine, and perform skin cancer screenings regularly. In the event of a skin cancer diagnosis, our physicians can perform different procedures, such as excisions or Mohs micrographic surgery, depending on the precise diagnosis.

Cosmetic Skin Rejuvenation

We offer the latest treatments in skin rejuvenation including microneedling with platelet-rich plasma (PRP) therapy to boost collagen production or reverse hair loss, as well as cutting-edge injectable treatments such as SkinVive to hydrate the skin and improve skin texture. You can also find a variety of medical-grade skin care products designed to treat wrinkles, acne, and much more. Our physicians will help you develop a tailored regimen including the skin rejuvenation procedure or treatment that fits your skin goals.

Cosmetic Laser Treatments

We offer advanced laser technologies using various energies that can provide a flexible, customizable treatment experience based on your unique skin needs. If you’re struggling with concerns such as dull skin, sun spots, or skin laxity, lasers can help improve your skin health and appearance. Our technologies include:
Clear + Brilliant
Fraxel Restore Dual
Alex TriVantage
Intensif Radiofrequency Microneedling
Photodynamic Therapy

Whether you desire skin tightening, boosted collagen production, pigment removal, or treatment for a specific skin condition, your dermatologist can help you select the ideal option to help you achieve your desired results.

Dermal Fillers

You can find several of the leading names in hyaluronic acid dermal fillers at our Hamptons office. Designed to add volume to aging skin, fillers are one of the best ways to enhance the lips, contour the jaw and neck, lift the cheeks and jowls, and much more. Our knowledgeable and highly skilled dermatologists can help you achieve your ideal appearance with natural, long-lasting results.


Industry-leading injectables such as Botox and Daxxify are some of the most popular options at our practice. These FDA-approved injectables are the best way to rejuvenate your appearance by preventing and reducing wrinkles. Botox and other botulinum toxins can be used in a variety of ways by our experienced physicians, helping you tailor your ideal treatment to your needs. We are a leading provider of Botox and cosmetic injectables for the greater Eastern Long Island area.

Our Physicians

Our dermatology providers are some of the leading experts in the greater New York City and Long Island area. Led by Dr. Anne Chapas and dedicated to ongoing education and expertise, they regularly contribute to the latest research, clinical trials, and dermatological studies. They are prominent experts in cosmetic dermatology across the country, offering unparalleled professional care to our patients.

We also offer a fellowship program accredited by the American Society of Dermatologic Surgery designed to give post-residency dermatologists in-depth knowledge of cosmetic dermatology and dermatologic cosmetic surgery. We regularly train dermatology residents in the most state-of-the-art skin treatments, products, and technologies, as well as their cosmetic use. This extremely unique program takes place in the heart of New York City, allowing fellows to train under some of the leading cosmetic dermatology experts and access the latest lasers and devices.

Click the links below to learn more about each dermatologist and their impressive qualifications. For medical dermatology services, you can see insurance information by physician here.

Our physicians who practice in the Hamptons are:
Anne Chapas, M.D.
Rishi Chopra, M.D.
Tatyana Petukhova, M.D.
Jeanette Black, M.D.
Mitchell Kline, M.D.

Frequently Asked Questions

Do you offer skin cancer treatment?

Your knowledgeable dermatologist can perform a thorough skin cancer screening as well as assess any problematic spots you may be concerned about. We also offer skin cancer treatments such as Mohs surgery and can talk with you about your specific next steps after a skin cancer biopsy.

Where are you located?

We are located at 728 Montauk Hwy, Water Mill, NY 11976.

Will I be seeing a physician assistant?

At UnionDerm, only our highly-skilled, board-certified dermatologists perform all treatments and procedures. We do not have any physician extenders such as nurse practitioners or physician assistants on the team.

What cosmetic procedures do you offer?

We are thrilled to provide one of the most extensive cosmetic procedure offerings in all of Eastern Long Island across skin tightening, skin resurfacing, injectables, and body contouring. Current devices include Fraxel, RF Microneedling, Sofwave, Alex Trivantage, and Vbeam—along with several fillers and Botox.



728 Montauk Hwy,
Water Mill, NY 11976


We offer private parking on-site.


We are currently seeing patients on Mondays, Tuesdays and Thursdays.

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