Meet our team

Teamwork and dedication are essential elements to dental health and wellness. We’re inspired to deliver top-flight dental care to our patients and the community of Marin.

Meet our team

Teamwork and dedication are essential elements to dental health and wellness. We’re inspired to deliver top-flight dental care to tour patients and the community of Marin.

Dental professionals on a mission

Our team is invested in a mission: support our patients’ comfort and dental health by working to resolve issues with clinical excellence and compassion. We’re here to listen to you, answer your questions, and earn your trust. In return, our patients reward us with decades-long relationships.

dr hansen in his office

Mark Hansen, DMD

Dr. Hansen leads our team, sharing his unwavering passion for helping people improve and sustain dental health. His goal is to help people maintain healthy smiles that last a lifetime. He works to accomplish this goal at his office, and he shares his expertise through volunteer dentistry locally and internationally.

Registered Dental Hygienist


“I am a native of Sweden. I came to the Bay Area in the mid-1980s and graduated from UCSF’s dental hygiene program. I live in Novato with my husband and two young children. In my free time, I like to hike, bike ride, and spend time with family and friends.”

cathrin of dr. hansen's office

Registered Dental Assistant


“I have been a dental assistant since 2001 and a dedicated advocate for sharing dental knowledge. I attended the Universidade Federal do Rio Grando do Norte in Brazil where I received my dental degree. In the U.S., I attended the College of Marin to complete the requirements for my license as a Registered Dental Assistant (RDA). I joined Dr. Hansen’s practice in 2013, where I have enjoyed sharing my passion for the work and providing the best care to patients in a comfortable environment.”

Sumaya Silva, Registered Dental Assistant

Registered Dental Assistant


“When I graduated from high school, I thought I was headed into early childhood education. But when I was given a chance to start a career in the dental field, I jumped at it. I attended classes at the College of Marin and started out as a dental assistant in a pediatric office. I have now been a Registered Dental Assistant for over 20 years and have enjoyed every minute—especially the opportunity to meet so many wonderful people. Establishing relationships with our patients is one of the many reasons I love being here. In my spare time, I love being with my husband and our two children.

Wendy Tucker, Registered Dental Assistant

Office Manager


“I am a long-time resident of the Bay Area, having grown up in San Rafael and attending San Rafael High School and the College of Marin.  I am honored to have achieved team membership with the National Judo Institute in Colorado. I participated in many judo competitions in the United States and other countries. After retiring from the team, I spent 6 years overseas working for a specialized unit of the Criminal Investigation Division of the U.S. Army.  For the last 20 years, I have been proud to serve as an Office Manager in the Dental Industry in the North Bay Area. I have been with Dr. Hansen since 2019.  When I am not working with this wonderful team, I enjoy my 2 dogs and tending to my large vegetable and fruit garden in Petaluma.”

cathy of dr. hansen's office