Meet Us

Meet the Doctors

Doctors Don K. Shimizu and Laarni C. Shimizu are accomplished Doctors of Dental Surgery and owners of their private practice in Walnut Creek. They are dedicated to providing advanced comprehensive and cosmetic dental care for their patients. The Doctors continue to participate in advanced education courses and seminars to remain current with the changes in the profession. Drs. Don and Laarni Shimizu work and consult with various dental specialties to ensure delivery of exceptional quality care. They are members of the California Dental Association and the Contra Costa Dental Society.


 Dr. Don K. Shimizu

A native of Pleasant Hill/Walnut Creek, received his bachelors degree from the University of California at Berkeley in 1987. He then attended the University of California at San Francisco and received his Doctorate in Dental Surgery in 1991. Dr. Don Shimizu is a member of The California Dental Association and The American Dental Association. He has served on the Board of Directors, as chairman of the New Professionals Committee and as District Representative for the Contra Costa Dental Society. He has also held a position on the New Professionals Committee and acted as a delegate for the California Dental Association. Dr. Don Shimizu has been an active supporter of many local schools, sports teams and business organizations.Dr. Don Shimizu lives in Walnut Creek with his wife, Laarni and their daughters Stephanie and Katie. During his free time he enjoys fishing, wakeboarding and windsurfing.


Dr Laarni C. Shimizu

Graduated in 1992 from the University of California in San Francisco with her Doctorate in Dental Surgery. Dr. Laarni Shimizu was recognized for outstanding diagnostic and clinical skills and patient care at UCSF. She owned and operated her own successful private practice for nine years before moving her practice to join her husband’s practice in 2005. Dr. Laarni Shimizu continues her commitment to support local school and charitable organizations.

Meet the Staff



Scheduling Coordinator/ Registered Dental Assistant

Lauren is a graduate of the Diablo Valley Dental Assisting Program in Pleasant Hill. She currently works in both the front office, scheduling treatment and also delivering patient care. Lauren enjoys spending time with her family.



Financial Coordinator/Registered Dental Assistant

Jessenia is a graduate from Carrington College from the dental assisting program. She also attended San Francisco State where she took several courses focusing on accounting. She has been in the dental field for over 4 years. In her free time she enjoys traveling abroad with friends and family. She also enjoys cooking and reading.



Registered Dental Hygienist / Registered Dental Assistant

Jenny graduated with academic honors from Diablo Valley College with an Associate’s degree in Science and Dental hygiene. She is a member of the American Dental Hygiene Association, the California Dental Hygiene Association and the local Mt. Diablo Dental Hygiene Society. Jenny began her career as a Registered Dental Assistant in Dr. Shimizu’s practice and at a periodontal practice over ten years ago. Jenny has volunteered her dental hygiene services at the VA hospital in Vallejo and has provided education on oral diseases, drug use and effective oral hygiene instruction to the youths at Juvenile Hall in Martinez. Jenny also works for a local periodontal practice. When she’s not working she enjoys spending time up in Tahoe with her husband and three kids.



Registered Dental Hygienist / Registered Dental Assistant

Alex has been in the dental field for seven years, she started out as a registered dental assistant at her pediatric office. She graduated from Carrington College in Sacramento from the dental assisting and dental hygiene programs. In her spare time she enjoys spending time with her loved ones, fishing, camping and river rafting.



Registered Dental Hygenist

Pouneh is a graduate of Carrington in San Jose where she graduated from the dental hygiene program. She has been in the hygiene field for over 10 years. In her spare time she enjoys cooking authentic cuisine, and reading. Pouneh also loves to travel the world with her husband. She always makes sure she takes good care of her patients and treats them as her family.




 Registered Dental Assistant

Sierra is a graduate of Mt. Diablo Loma Vista dental assisting program. She is currently studying to become a registered dental assistant. In her spare time she loves to get her nails done, dance the night away at country concerts, and spend time with her family. Sierra has been in the dental field for a little over a year, and is excited to grow in this practice and the many years to come.



Registered Dental Assistant

Kris is a graduate of Carrington College in Pleasant Hill where she studied as a dental assistant. She loves to take care of her patients and make sure they are calm and enjoy their visit with us. In her free time she enjoys hiking with her husky, Cosmo. Being outdoors is very comforting to her. She also enjoys car shows, preferably old muscle cars, and watching sports.


Registered Dental Assistant

Marcella graduated from Mt. Diablo Loma Vista. She has been an RDA for 4 years now. On her spare time she loves going on hikes, and running with her daughter. She also enjoys taking her daughter to piano lessons and softball. They are a great mommy/daughter duo.