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Your Trusted Dermatology Experts in Portsmouth, NH
Seacoast Dermatology has been a trusted provider of comprehensive dermatology services since its founding over 40 years ago. Our physician-led practice combines academic excellence with local expertise, offering medical, surgical, and cosmetic dermatology care across Portsmouth, Dover, and Exeter, NH. Our board-certified dermatologists and advanced practitioners deliver personalized treatment plans grounded in decades of clinical experience and ongoing contributions to dermatological research.

We maintain leadership in skin cancer detection and treatment, including Mohs surgery, while earning consistent recognition through patient and peer awards. Our commitment to community health is reflected in our locally operated model and accessible care approach.
Services
Medical Dermatology Mohs Surgery Cosmetic Dermatology Skin Cancer Treatment Botox Injections Laser Treatments Acne Treatment Psoriasis Care Surgical Dermatology Wart Removal
Highlights and features
  • Board-certified dermatologists with 40+ years of combined experience
  • Same-week surgical access including Mohs micrographic surgery
  • Personalized treatment plans tailored to individual patient needs
  • Multiple convenient locations across New Hampshire's seacoast region
  • Award-winning care recognized by patients and peers since 2012
What people say
Life-saving care Prompt service Friendly staff Excellent outcomes Highly recommended
Services
Mohs Surgery
Our fellowship-trained Mohs surgeons provide precise skin cancer removal with immediate microscopic analysis. This advanced technique ensures complete tumor removal while preserving healthy tissue. Patients benefit from same-day procedures and exceptional cure rates for basal cell and squamous cell carcinomas.
Botox Injections
FDA-approved Botox treatments address facial wrinkles by temporarily relaxing targeted muscles. Our certified providers create natural-looking rejuvenation plans for forehead lines, crow's feet, and frown lines. Results typically appear within days and last 3-4 months with proper maintenance.
Medical Dermatology
Comprehensive management of chronic skin conditions including acne, psoriasis, and eczema. Our evidence-based treatments combine topical therapies, systemic medications, and lifestyle modifications. Personalized care plans address both symptoms and underlying causes for long-term skin health.
Laser Treatments
Advanced laser technology addresses pigmentation, vascular lesions, and textural irregularities. Treatments improve sun damage, age spots, and uneven skin tone. Multiple laser options allow customized approaches for various skin types and aesthetic goals.
Skin Cancer Screening
Full-body skin exams detect early signs of melanoma and non-melanoma skin cancers. Our board-certified dermatologists perform thorough evaluations using dermatoscopy. High-risk patients receive individualized monitoring schedules and sun protection counseling to reduce cancer recurrence risks.
People
James Dinulos
MD
Board-certified dermatologist specializing in Mohs surgery with academic affiliations to Dartmouth Medical School. Recognized Castle Connolly Top Doctor since 2012, focusing on skin cancer detection and treatment.
Andrew Werchniak
MD
Dermatologist with expertise in medical and surgical dermatology. Provides comprehensive skin care with emphasis on early cancer detection and treatment of complex dermatological conditions.
Arthur Marka
MD
Experienced dermatologist offering personalized care for medical and cosmetic skin concerns. Specializes in diagnosing and managing chronic skin conditions while maintaining focus on patient education.
Jonathan Glass
MD
Dermatologist with advanced training in skin cancer treatment and cosmetic procedures. Committed to combining clinical excellence with compassionate care for optimal patient outcomes.
Moira Quinn
FNP-C, DCNP
Dermatology-certified nurse practitioner providing comprehensive skin care services. Specializes in medical dermatology and patient education with focus on preventive skin health measures.
Questions
What skin cancer detection services do you offer?
We provide full-body skin exams using dermatoscopy for early cancer detection. Our board-certified dermatologists perform biopsies and offer same-week surgical access for confirmed cases.
Do you treat cosmetic skin concerns?
Yes, our cosmetic services include Botox, dermal fillers, and laser treatments. These options address wrinkles, pigmentation, and skin texture improvements under medical supervision.
Are same-day appointments available?
We offer same-week surgical access for skin cancer treatment. For urgent medical concerns, our team prioritizes scheduling based on clinical need.
What makes your practice unique?
As a physician-led, locally operated practice with 40+ years of experience, we combine academic expertise with personalized care. Our team includes Castle Connolly award-winning dermatologists and advanced practitioners.
Do you accept insurance?
Medical dermatology services are typically covered by insurance. Cosmetic treatments are generally self-pay. Our billing team assists with verification and payment options.
Where are your locations?
We serve Portsmouth (two locations), Dover, and Exeter, NH. All offices provide comprehensive dermatology care with specialized surgical centers at select locations.
Reviews (5)
Jodi B.
Sep 28, 2021 Report
I've taken my family to Seacoast dermatology (Portsmouth) on and off for years, with three kids there is always something going on. Always had a good experience, until today. My son's primary doctor said to get appt first w/dermatologist then they will send referral. I made an appt online for seacoast dermatologist., that was easy, 10 min later a very rude office person called me. She told me she has to cancel the appt., that I need to get a referral then make the appt. She was very abrupt about it, didn't seem to care if I take my business else where. I told her the primary said
Laurie R.
Dec 07, 2020 Report
Have had many visits with this practice! Have had several precancerous and cancerous lesions on my face treated. Two needed the Mohrs procedure. Dr Dinulos performed the Mohrs procedures and did a fantastic job . The scars are minimal to none. All of the staff are professional without being stuffy. Dr Dinulos has excellent credentials as well as the group! I travel now up from RI to receive any treatments or concerns that need attention. I highly recommend them without hesitation!
Lisa M.
May 16, 2020 Report
Very unsatisfactory experience with this practice. At my annual exam, they identified several pre-cancerous spots on my face. Treatment would result in blisters that would take up to six weeks to heal. I have had this treatment twice before at another dermatologist in a different state, so I knew what to expect. I had to wait until I had a time when I had no important work meetings, travel or social engagements, and I returned for the treatment. A day later, I left a message because the treated areas were not reacting at all - no color change, no tenderness, even when I touched them. A tech returned
Paul L.
Jul 20, 2017 Report
Dr Dinulos is an excellent dermatologist and every time I go for my annual checkup he is friendly, professional and spends ample time listening to my concerns. His office is very efficient and I am consistently seen at my appointment time with no exceptions. I highly recommend Seacoast Dermatology.
Zoe S.
Jun 21, 2017 Report
The actual medical care is good and I have no complaints there but I have literally never been seen on time. I always end up sitting in the waiting room for at minimum 40 minutes and it is not unusual to wait for over an hour. I've seen other patients complain about their wait times more times than not and I have also given feedback to the receptionists. It would be nice if they would give the patient a call to inform them that they are running so far behind so that you can plan your day accordingly and perhaps come to your appointment later so that you don't waste so much time sitting