Derrick M. Chan, DDS

As a dentist in San Francisco, Derrick M. Chan is a long standing member of the dental community. With over 35 years of dental experience, Dr. Chan brings both practical knowledge from years of performing dental procedures, and the ability and desire to stay at the forefront of oral health advances, to his San Francisco-based practice.

Starting practice in 1980, Dr. Chan soon became recognized as a knowledgeable and respected member of the dental community. 

Meet the Hygienists

Christina Valdez, RDH

I've been in dentistry for over 15 years & in 2016 it will be my 10 year anniversary with Dr. Chan. Born & raised in the Bay Area & currently reside in San Francisco with my family. I have 2 kids, Santiago & Ava. Every year my family & I go for Santiago's & my Birthday to watch a game at AT&T park. My family & I are true San Franciscans with a big love for the SF Giants. I enjoy being a dental hygienist because I get to be one on one with my pt's in a preventative & personal setting. I also enjoy educating my patients & helping them to achieve a healthier mouth. I really enjoy learning from my pt's even though it may seem like I may believe I need to teach them, I learn something new & different every week. I hope to one day reach others in underprivileged countries so they too can achieve healthier mouths.

Shadelly Reader, RDH

Born and raised in San Francisco, Shadelly began her journey towards becoming a dental hygienist at UC Davis earning a Bachelor of Science in biochemistry. She continued her education at UC San Francisco, completing her Bachelor of Science in Dental Hygiene. Shadelly has been practicing since 2003 and her passion for oral health continues unabated. Because of her love of science and research, she enjoys patient education explaining the correlation between oral health and the rest of the body to her patients. As a hygienist her enthusiasm coupled with our office's team approach to education and motivation is the reason she is so successful in motivating and teaching her patients. On her off days, she can be found spending time with her husband and her 10 year old daughter and 7 year old son. Her days are filled with the parent-teacher organization, soccer, gymnastics, helping with homework, hiking and of course watching her beloved San Francisco Giants.

Katelynn Ta, RDH

Katelynn was born and raised in San Fransisco. She received her Dental Hygiene degree from Chabot College in Hayward and has been practicing since 2006. Katelynn is passionate about her career. She enjoys participating in continuing education for the latest updates in dental technology and scientific research. She is a very skilled dental hygienist and is dedicated to her patients' dental health. In her spare time, she enjoys photography and cooking. Most importantly, she enjoys spending quality time with her husband and two precious kids.

Lindsey Washburn, RDH

Lindsey is originally from New York and went to college in Rochester, NY to earn her degree in Dental Hygiene. She practiced in NYC, in Midtown West, for 5 years before moving to San Francisco. Upon moving to California Lindsey re-certified and re-earned her anesthesia, nitrous oxide and laser certification to help keep her patients comfortable and healthy. She can now practice as a hygienist in all 50 states! The oral/systemic link between a healthy mouth and body is something Lindsey is very passionate about. She enjoys educating and motivating her patients while creating a long lasting dental relationship. On her days away from dentistry Lindsey runs half marathons and skis, and loves hiking with her English Bulldog, Sophie. 

Meet the Dental Assistant

Elaine Zhao, RDA

Elaine has been practicing dental assisting for over 13 years in both small and large dental clinics. She is wonderful at making her patients feel comfortable and at ease. She loves being a registered dental hygienist because it allows her to perform specialized techniques that help people improve their oral health. Elaine has a gentle touch which she also uses in her cooking. She also enjoys watching drama and shopping in her free time.

Meet the Administrators


Billing & Office Manager
Certified Dental Radiation Technician


Assistant Office Manager
Certified Dental Radiation Technician
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