Skin tightening
XERF skin tightening: is it a laser, and what should I expect?
How radiofrequency differs from a laser, what it can realistically address, and questions to bring to your consultation.
Dermatology,personally delivered.
Medical, surgical and cosmetic dermatology from Maren Gaul, DO — serving Rapid City and the Black Hills with thoughtful, evidence-based care.
Rapid City Dermatology & Mohs
Great dermatology starts with knowing the person behind the skin.
Skin concerns are personal. The care should be too.
Rapid City Dermatology & Mohs was created to provide thoughtful, relationship-driven dermatologic care without losing the clinical expertise patients expect from a specialist.
From routine skin concerns and complex rashes to skin cancer surgery and advanced cosmetic treatments, Dr. Maren Gaul and her team take time to understand the person, the concern and the goal before recommending a treatment.
Areas of care
Four ways we care for skin.
Meet Dr. Maren Gaul
Expertise matters.
So does being heard.
Dr. Maren Gaul is board-certified in Internal Medicine, Dermatology and Mohs Micrographic Dermatologic Surgery. She has been performing Mohs surgery since 2018.
Her path into dermatology became deeply personal when, while still in medical school, she identified a melanoma on her father.
Years later, after practicing dermatology and Mohs surgery in Alaska and South Dakota, she created Rapid City Dermatology & Mohs around a simple belief: patients deserve excellent medicine without losing the human relationship that makes excellent care possible.
- Internal Medicine
- Dermatology
- Mohs Surgery
A different kind of dermatology practice.
More personal
Care begins with listening. Treatment recommendations should reflect the patient — not simply the condition.
Honest recommendations
If the best treatment is something we do not provide, we will tell you, and help you find who does.
Advanced care
Evidence-based medicine combined with thoughtfully selected technology and treatments.
Relationships that last
Dermatology often requires follow-up over years. Continuity matters, and so does knowing your history.
Cosmetic philosophy
The goal isn’t to look different.
Good cosmetic dermatology should respect your features, your age and your individual definition of looking your best.
Dr. Gaul approaches aesthetic treatments conservatively and transparently, combining dermatologic expertise with technologies selected around skin health, anatomy and realistic goals.
Sometimes the right recommendation is treatment. Sometimes it is skincare. Sometimes it is waiting. And sometimes the right solution is something another specialist does better.
The recommendation should always come before the sale.
Rapid City & the Black Hills
Care built for how people live here.
High elevation, long summers outdoors and dry winters are hard on skin. Our patients hike, ride, ranch, ski and work outside, and their skin shows it. That reality shapes how we screen for skin cancer, how we protect skin and how we treat it.
Skin Journal · October 2026 edition
The questions patients ask.
Visit the blog
Laser & light
AVAVA laser: skin tones, recovery and the questions worth asking
A patient-first guide to fractional laser treatment, individualized candidacy and planning a realistic recovery window.
Skin health
Is it dry skin or eczema? Cooler-weather questions
Why itch and dryness deserve attention, what to discuss at a visit, and when a rash needs prompt care.
In our patients’ words
“Dr. Gaul is the most caring, listening, and skilled dermatologist I have ever had. She cares about her patients and wants the best for them. She does her own Mohs surgeries; every other dermatologist I’ve had refers patients out to someone who is a stranger to me. It means a lot to have someone I know and trust doing surgery when it’s necessary.”
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Let’s take care of your skin.
Whether something has changed, something has been bothering you for years, or you simply want expert guidance on keeping your skin healthy, we’re here to help.