Meet Our Physician

Stefan Lowenstein, M.D.

As a double board-certified dermatologist, Mohs surgeon, and Mill Valley native, Dr. Lowenstein is proud to assume the role of owner and CEO of Aesthetic Dermatology and Skin Cancer — a practice that has provided world-class dermatologic care for decades.

Dr. Lowenstein brings years of experience in private practice dermatology and is board-certified in both dermatology and Mohs surgery through the American Board of Dermatology. With thousands of successful surgical cases, he is known for his meticulous technique and exceptional patient outcomes.

A proud alumnus of Tamalpais High School, Dr. Lowenstein vividly recalls walking past Aesthetic Dermatology and Skin Cancer daily during lunch breaks, never imagining that one day this would be his place of work.

He pursued his undergraduate degree in Biological Sciences at the University of California, Santa Barbara, before returning to the Bay Area to complete medical school and dermatology residency at the University of California, San Francisco — one of the nation’s most prestigious training programs. He then completed a fellowship in Mohs skin cancer surgery at California Skin Institute under the direction of Dr. Greg Morganroth, where he gained expertise in advanced facial reconstruction and all aspects of Mohs surgery.

Following his training, Dr. Lowenstein worked in multiple dermatology practices, specializing in Mohs surgery, general dermatology, and cosmetic dermatology. Over the years, he has developed expertise in a range of cosmetic treatments, including Botox, fillers, and various laser procedures. Notably, he has become one of the few dermatologists with specialized proficiency in full-face laser resurfacing, a highly sought-after treatment.

Dr. Lowenstein looks forward to continuing to deliver high-quality dermatologic care while enhancing the overall patient experience. With his dedication to excellence, patients can trust that the practice’s longstanding reputation for outstanding medical and aesthetic dermatology will continue for years to come.

Mira Noble, N.P.

Mira Noble is a board-certified Nurse Practitioner with a strong clinical foundation and a passion for helping patients feel confident in their skin.

A Marin County native, Mira grew up in Mill Valley and attended high school in San Rafael – and is now proud to be caring for the community she calls home. She earned her undergraduate degree in Public Health from UC Irvine before completing her nursing degree at Samuel Merritt University.

Mira then spent nearly seven years as a Registered Nurse at UCSF, specializing in pediatric oncology and bone marrow transplant care – an experience that shaped her deep commitment to compassionate, patient-centered care and an exacting standard of clinical excellence. She went on to complete her Master’s degree as a Nurse Practitioner at the University of Michigan.

That blend of rigorous medical training and genuine attentiveness to each patient allows Mira to create personalized treatment plans that deliver natural, refreshed results her patients love.

When she’s not in the office, Mira can be found hiking, reading, or planning her next adventure.