Our Team

William van Dyk, DDS

Dr. van Dyk is a graduate of the University of the Pacific School of Dentistry in San Francisco.  He participated in a general dentistry residency at Madigan Army Medical Center at Ft. Lewis, Washington, before opening a practice in San Pablo in 1976.  He has taught continuously at the University since returning to the Bay Area and is a noted lecturer traveling around the US sharing information related to the successful practice of dentistry.

He participates in many community organizations including the Contra Costa College Foundation, the San Pablo Rotary, the San Pablo Chamber of Commerce, and Brookside Foundation. 

He lives in Pt. Richmond with his wife, Margi, and enjoys travel and regular exercise, often together, including climbing to the top of Mt. Whitney and Mt. Kilimanjaro, and walking across England.  

Raynato Castro, DDS

Dr. Castro is a 2011 graduate of the University of the Pacific School of Dentistry. He grew up in San Pablo, attended Juan Crespi Junior High School and De Anza High School before going to the University of California, Davis for his undergraduate degree. He has been very active in the community, participating in service projects through San Pablo Rotary to bring food to the homeless, books to underserved children, and help to patients at the RotaCare Clinic in Richmond.

In addition, Dr. Castro serves on the leadership council of the Health Academy at De Anza High School.

He lives in Pinole with his wife, Lindsey, a Kaiser nurse, and enjoys videogames.  He writes and draws for the webcomic, Buttersafe, and variety of other art projects.

Dr. Castro has been the owner of the practice since January 2016. 

Ada, Treatment & Financial Coordinator

Ada is our upbeat, highly skilled Treatment & Financial Coordinator. She is a 2014 graduate of Carrington College's dental assisting program and has training specifically in scheduling treatment and managing insurance plans. She can answer any question about your insurance benefits and billing. Everyday she wows us with her ability to make the numbers work for our patients. She's the proud mother of a beautiful baby girl, Mia, speaks fluent Italian, and loves music & the San Francisco Giants.

Ayako, Registered Dental Hygienist

Ayako has been building a following of very happy patients for 19 years at the office.  She graduated from Sacramento City College Dental Hygiene Program.  In addition to part time practice at the office she is also trained in Jin Shin Jyutsu, a form of Acupressure, and works closely with hospice patients.  She is also a fan of frequent trips to Hawaii and other exotic places. 

Gina, Registered Dental Hygienist

Gina graduated from the Diablo Valley College Dental Hygiene Program in 2012 after earning a bachelor’s degree at Sacramento State.  She started with our office after graduation and immediately demonstrated the compassion and excellence which we strive to achieve.  She lives in Vallejo with her husband, Taylor.  Her other career is as a singer and actor in local productions.  

Karol, Scheduling Coordinator & Registered Dental Assistant

Karol is our bright and focused Scheduling Coordinator & Registered Dental Assistant. She is a 2014 graduate of the Carrington College Registered Dental Assisting program and was best friends with Ada when they were in school. She grew up in Richmond, lived in Mexico for a few years, and speaks fluent Spanish.. You will hear her friendly voice reminding you of your upcoming visit and see her lovely smile when you walk in for your appointment. When she's not at the office, she enjoys watching movies and spending time with her son, Adam. 

Lily, Registered Dental Assistant

Lily graduated from the Contra Costa College Dental Assisting Program in 2003.  Since joining our practice she has earned her registered license and cross trained to both serve as a chairside assistant and also assist Marlene at the front desk with scheduling and financial management.  She’s a team player and strives to provide excellent service to every patient, every day.  She lives in Richmond with her husband, Juan, and children, Anthony and Alberto.  

Starr, Registered Dental Assistant

Starr came to us with Dr. Castro and has become an integral part of our dental practice family.  She graduated from the College of San Mateo Dental Assisting Program after receiving a bachelor’s degree from Sonoma State University.  You’ll notice her because of the phenomenal amount of energy she puts into her teamwork and patient care.  She lives in Vallejo with her husband, Mike, and son, Mike Jr.  She spends her spare time following Mike Jr’s baseball career.  

Wendy, Registered Dental Hygienist

Wendy joined our office while at the Middle College High School as Marlene’s assistant.  While continuing to work for us she earned an Associate Degree from Contra Costa College and went on to Western Career College for her dental hygiene degree and license. We’ve enjoyed watching her progress in her career and at the same time meet the needs of the practice and our patients.  She lives in Brentwood with her husband, Luis, and baby Isabella. 

Marlene, Office Manager (retired)

Marlene retired from her position as office manager in January 2017. Marlene was with our office for almost 20 years in her over 35 year career in dentistry.  She graduated from Contra Costa College’s Dental Assisting Program.  In addition to greeting every patient by name, she handled staffing, scheduling, financial and insurance assistance, and overall management of the office.  Now with a lot of free time, she enjoys traveling and chasing a golf ball around local courses.