Dr. Yngvar A. Hvistendahl

Dr. Yngvar A. Hvistendahl

Medical Director

Dr. Hvistendahl earned an Ivy League degree from Dartmouth College, where he helped lead the men’s soccer team to the league title. He then completed his medical degree at Case Western Reserve University in Ohio. At the University of California, San Francisco, he completed both an internship and residency in general surgery and a plastic surgery fellowship.
Dr. Hvistendahl is certified by the American Board of Plastic Surgery, and has served as chief of the plastic surgery division at Marin General Hospital, as well as chief surgeon at Marin County’s Plastic Surgery Center.

Sandi Selig Farney

R.N. B.S.N.

Sandi is the “heartbeat” and co-founder of Mt Tam Laser, established in 2004. With advanced certification in all laser treatments and unparalleled experience with injectable solution and skincare products, Sandi is able to customize and administer an individualized care plan to meet your aesthetic needs. Sandi and her husband have raised 3 children in Marin County, and you may find them all on the trails of Marin with their beloved Rottweiler, Eddy. Sandi invites you to visit us for the care and guidance you need to “help you look and feel your very best!”

Karen Rehder

R.N., B.S.N., M.P.H, FNP-BC

Karen is a Nationally Board Certified Nurse Practitioner and a member of the International Society of Plastic and Aesthetic Nursing (ISPSAN). She also has her Masters in Heath Promotion and Disease Prevention.
Karen resides in Marin where she has raised her children, and enjoys gardening and biking. In her free time, Karen also loves volunteering for the Marin LIV Mt Bike Team where she coaches women to be safe and have fun on their bikes.
Her lifelong passion has been helping people become the best that they can be!



I have been a licensed esthetician for 14+ years, and skin care is my passion! I specialize in acne and anti-aging treatments and regard education as being the first step in achieving great skin. I truly believe that amazing results will happen once we understand how the skin operates, and I consider it a gift to be able to help my clients achieve their skin care goals. Whether you’re having unmanageable breakouts, wanting to slow the aging process, or you simply want to relax and take care of the largest organ on your body, I’m here for you. I look forward to joining you on this journey!

Lisa Newman

Patient Coordinator/Front Office

Linda Abusway

Patient Coordinator/Front Office.

Julia Jacobs


Julia Jacobs is a Family Nurse Practitioner and Associate Clinical Professor in the Family Nurse Practitioner Program at UCSF . Julia has over 20 years experience providing primary care, Women’s Health Care and Urgent Care medicine to patients in the clinical setting. Julia is deeply committed to providing comprehensive and personalized care to her patients in the areas of preventative care, acute care and chronic care. In addition, Julia has a special interest in aesthetic dermatology. She also has 8 years of experience in aesthetic medicine. She is trained in using multiple lasers, and providing skin care treatments such as Dermapen, IPL , medical grade peels, Boto® and Juveder®.

Invest in your skin, it is going to represent you for a very long time.

Linden Tyler