Meet Our Dental Clinic Team

Dedicated To Your Care & Comfort

Our team is dedicated to providing you with a pleasant visit and results that you’re proud to show off. Our administrative staff is ready to help you with questions about scheduling, financial policy and insurance. To make that part of the process as simple as possible!

 Bridget O’Leary - Office Manager - Kantor Dental Group

 Bridget O’Leary
is our Office Manager. She loves dentistry because of the positive effect it can have on people’s lives. She also loves to make patients feel comfortable especially when they have dental fear.  She lives in Cotati with her husband Steve, son Dillon and two dogs Johnny Cash and Maya.  She loves spending time with her family hiking or going to the beach.  They also love to watch Warriors and Giants games together.

  Kelly Marks - Patient Coordinator - Kantor Dental Group

 Kelly Marks
 is our Patient Coordinator. She specializes in making all patients feel welcome and comfortable in our practice. Kelly started out in dentistry as an assistant, so she has a lot of knowledge of how procedures work and what to expect when you are in the chair. Kelly lives in Petaluma with her husband, 2 kids and 3 cats. In her spare time, she enjoys practicing yoga, reading and playing Animal Crossing on her Nintendo Switch. She is obsessed with all things Harry Potter. She and her family are Giants fans.

 Tonya Williams - Dental Hygienist - Kantor Dental Group

 Tonya Williams is our Registered Dental Hygienist.  She has always had a fascination with teeth that led her straight into the dental field shortly after High School. She has enjoyed working closely with her patients to obtain optimum teeth and gum health Since 2003. Tonya was raised in Central Florida and attended Miami Dade College where she graduated as a Registered Dental Hygienist.  5 years ago she and her family relocated to the bay area for her husband’s job. Her husband, Geno, and their two children, Emme and Easton currently live in San Anselmo. They enjoy watching the Warriors

 Sam Fullerton - Dental Hygienist - Kantor Dental Group

 Sam Fullerton is our Registered Dental Hygienist. She always loved the dentist as a kid and knew she wanted to work in Dentistry from a young age. When she found out some people don’t love the dentist or have fears, she wanted to ensure people feel comfortable, safe, at ease and maybe even have a little fun when they come in for their cleanings! She is a third-generation Bay Area native and lives in Terra Linda. She has a daughter Presley at Vallecito School. They have fun volunteering with their girl scouts troop, hiking with their Labradoodle Dolly, camping, traveling, swimming and dancing to live music. Sam is originally an A’s fan, growing up in the East Bay but also has lots of love for the Giants.

 Vanessa Arropside - Dental Assistant - Kantor Dental Group


Vanessa Arropside is our Dental Assistant and phlebotomist. She doesn’t know how to say anything cheezy about dentistry and why she loves it… but she does… a lot. She went to Heald college for her Dental Assisting training. She has two daughters named Maya and Sophia. She loves taking them to the beach and going on long hikes. She is a fan of the Warriors and Las Vegas Raiders.

 Kathy Toops - Dental Assistant - Kantor Dental Group


Kathy Toops is our Dental Assistant. She was born deaf and went to a deaf boarding school in Berkeley where she met her husband, Robert.  They raised 2 kids, Bobby and Tina.  They now have two grandchildren, Hunter and Sierra, both in college.  She has worked at Kantor Dental Group for 25 years.  She enjoys camping, fishing, and time with family and friends.  She is a Giants and Warriors fan.

She speaks American Sign Language.