Mark Hansen, DMD
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Meet the Team

We love our team and can’t wait for you to get to know them. Here’s a quick introduction.


Mark Hansen, DMD

Dr. Hansen attended UC Berkeley and received his dental degree from Tufts University. Dr. Hansen enjoys taking care of his patients, spending time with family and friends, volunteering, and  exploring the outdoors.

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.



Office Manager, Sandy Joubert

 I grew up in the military and my family settled in Marin after being stationed at Hamilton Air Force Base. I attended Novato High School and the College of Marin, where I received my Registered Dental Assistant (RDA) license. I’ve been working in the dental field for over 40 years—first as an assistant and then as office manager. Being in the field so long, I’ve had a chance to get to know so many patients and hear about their families. The bonds we’ve formed make coming to work a joy. Moving up to office manager has given me a different perspective. Now I also get to help patients with financing their dental work and maximizing their benefits. In my spare time, I enjoy bowling, hiking, camping, and spending time with my two new grandsons.

Registered Dental Hygienist, Kathy Nordin

I’m a graduate of the University of California at San Francisco (UCSF), where I received my bachelor’s degree in dental hygiene. A native of Sonoma County, I’m married with two kids. My passions include entertaining, home decorating, reading, traveling, and watching my grown children discover their world.



Registered Dental Assistant, Sumaya Silva

 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.

Registered Dental Assistant, Wendy Tucker

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 12 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.