Pediatric Dentist, Walnut Creek, CA 94596 - Dr. Duane Spencer. Dental care for infants, children, and teens.

Meet Our Pediatric Dental Team

"THE SNOOPY DENTISTPediatric Dentist Walnut Creek, CA - Dr. Duane Spencer"

Why Snoopy and Pediatric Dentistry?

In 1967, while serving with the Navy in Japan, Dr. Spencer treated the dependent children of Navy families stationed overseas. He hung a smiling Snoopy greeting card from his dental light & found it worked wonders with the young patients. Snoopy has been Dr. Spencer's dental "mascot" ever since. This office contains hundreds of Snoopys and Woodstocks which both patients and parents enjoy and for this reason is often referred to as the "Snoopy Office" or "The Snoopy Dentist". Patients wearing Snoopy shirts, etc., or bringing their favorite Snoopy toy with them to the office can expect to have their picture taken for the wall. In 1983 Dr. Spencer drew the "dog house-dog bowl with toothbrush" logo that this office continues to use. He opened this Walnut Creek pediatric dental practice in 1973. Dr. Spencer named his practice Walnut Creek Pediatric Dentistry in 1995. In 1990 Dr. Spencer received a personalized and autographed poster of Snoopy with braces from Snoopy's creator, the late Charles Schulz.

Jason M. Renner, D.D.S.

Born and raised in the Bay Area, Dr. Renner grew up in Orinda and graduated from Miramonte High School. He went to college at the University of California, San Diego where he received a Bachelor of Arts degree in Physiological Psychology with minors in History, Chemistry, and Biology.

His DDS degree was obtained at the University of California, Los Angeles, where he was awarded a Navy Scholarship based on academic performance. While in dental school, Dr. Renner was the UCLA class representative for the USC/ULCA mobile dental clinic for four years, providing dental care for the underprivileged youth of California and Mexico on weekends.

After dental school he spent four years in the U.S. Navy and was stationed aboard the aircraft carrier, U.S.S. Carl Vinson. While there, he received the Navy Achievement Medal from the Secretary of the Navy for superior performance of his duties and exceptional leadership.

Following the Navy, he was a general practitioner for three years in Vallejo, where he resumed treating pediatric patients after a four year hiatus in the Navy.

His desire to treat pediatric patients lead him to Florida where he completed a Pediatric Residency at Nova Southeastern University in conjunction with Miami Children's Hospital.

Dr. Renner is an active member of the American Academy of Pediatric Dentistry, the American Dental Association, and the Contra Costa Dental Society. He is currently on the Board of Directors for dental society as Chair of Community Awareness.

Dr. Renner lives in the Bay Area with his wife Gina and their two children, Matteo and Giulia. When not busy with work and volunteer activities he likes to spend time with his family and friends in the great outdoors.

Don D. Do, D.D.S., M.S.

Dr. Do, also known as “Dr. Don,” was born and raised in Orange County, California. He attended University of California, Irvine earning his Bachelor’s degree in Biology.

Dr. Don later went to receive his Doctorate Degree in Dental Surgery at New York University in New York City and served as president of the Student Chapter of the American Academy Pediatric Dentistry. At NYU, Dr. Don was the recipient of the Certificate of Merit AAPD Predoctoral Student Award.

Realizing his passion for providing for pediatric oral health, Dr. Don continued his education at NOVA Southeastern University in conjunction with Broward General and Joe DiMaggio Hospital in Florida. At NOVA, Dr. Don received his Pediatric Dental training and certificate and his Master of Science by completing research in the field of cleft palate repair with stem cells. Throughout the course of Dr. Don's studies, he has been very involved in community and international outreaches taking him to underserved areas of NY, Florida, Honduras, Grenada, and Jamaica to provide dental treatment and, most importantly, dental education.

Dr. Don has had a lot of experience working and mentoring children as well. As an Eagle Scout, he has served as an adult leader in Troop 167 in Garden Grove, CA guiding scouts up the ranks. Also, as a second-degree black belt in Tae Kwon Do, he has spent years training young martial artists to participate and excel in competition.

Dr. Don is enthusiastic to be working with Walnut Creek Kids Dentistry and to be back in California. He is also a Diplomate of the American Academy of Pediatric Dentistry and a member of the American Dental Association, California Dental Association, and Contra Costa Dental Society.

Dr. Don lives in Martinez with his wife Katie and son, August. His other interests include cooking, watching the food network, hiking, and walking their French Bulldog, Montana.

Duane E. Spencer, D.D.S.

Pediatric Dentist Dr. Duane SpencerA native Californian, Dr. Spencer grew up in San Rafael. He attended the University of Southern California, graduating from the USC School of Dentistry in 1965. After four years of active duty as a Naval Dental Officer, he completed his pediatric dental residency at Children’s Hospital, Oakland. He practiced pediatric dentistry in Berkeley from 1969-1988. He opened this Walnut Creek pediatric dental practice in 1973. After practicing dentistry for fifty years, he retired in 2015. He continues to frequent this office visiting with former patients and their parents.

Dr. Spencer is a board certified forensic dentist with over 40 years in the field. He continues as a forensic consultant to a number of counties and the Calif. Dept. of Justice. He has written and publlished in professional journals and texts and continues tso speak to health professional and law enforecement groups, locally and nationally. He is a member of Contra Costa County's Child Death Review Team. He is a Diplomate of the American Board of Forensic Odontology and a Fellow of the American Academy of Forensic Sciences, the American College of Dentists and the Pierre Fauchard Academy. He is also a retired member of the California Society of Pediatric Dentistry, American Academy of Pediatric Dentistry, Contra Costa Dental Society and the Caflifornia and American Dental Associations.

Doctors Doctors


The Staff

Evette, Scheduling Coordinator

Evette was born and raised in San Francisco, California and has been in the dental field for 19 years. She is married and has 2 boys. She moved to Walnut Creek in 2007 and became employed with Dr. Duane Spencer in 2008. Evette enjoys working at Walnut Creek Kids Dentistry and adores being surrounded by children. Snoopy and the gang were characters that she grew up with and she loves working with “The Snoopy Dentist”.


Bernadette, Financial Coordinator

Bernadette has been in the dental field since 2003 and joined “The Snoopy Dentist” in 2008. She is thrilled to work for Walnut Creek Kids Dentistry and would be happy to help with any dental insurance questions. Second oldest of 7 brothers and sisters, Bernadette likes to spend time with her husband and two boys. She is a sports fanatic and enjoys attending sporting events, traveling, and dining!


Jeannine, Registered Dental Assistant

Jeannine has been assisting in the dental community since 1992 and began working in Pediatrics in 2001. She joined Dr. Duane Spencer in 2008. Jeannine was born and raised in the area and has three children. Since 2010, Jeannine volunteers her time to Cub Scouting and Boy Scouting. She also enjoys crocheting, knitting and all the crafts that goes along with Cub Scouting.


Liz, Registered Dental Assistant

Liz entered the dental field in 2005 after graduating from the Dental Assisting program at DVC and joined the Snoopy team in 2009. She graduated from Cal State with a Bachelors degree in Liberal Studies and minor in Human Development. She enjoys the outdoors, baking, baseball and spending time with her husband and son.


Carolyn, Registered Dental Assistant

Carolyn has been in pediatric dentistry since 2008. She holds a bachelors degree in Health Science from Cal State and has been an RDA since 1992. In her spare time she loves cooking and also hiking with her 2 black Schnauzers. She lives in Lafayette with her husband and 2 sons.


Adrieanna, Registered Dental Assistant

Adrieanna couldn't be more ecstatic working for "The Snoopy Dentist". She enjoys the excitement of walking into such a happy upbeat working environment, where we educate children in a fun positive way the importance of everyday dental care. Adrieanna loves to travel with her husband, two daughters, and son, especially to Disneyland.


Jennifer, Office Assistant/Dental Assistant

Jennifer has been working in the dental field since 2000 and graduated from the Dental Assisting program at DVC in 2003. She joined “The Snoopy Dentist” in 2008 and loves working with the children and teaching them the importance of healthy teeth. She loves to show her artistic touch by doing all the promotions and arts and crafts for the office. Jennifer enjoys teaching Zumba Fitness in her spare time. She loves spending time with her husband, son, and daughter as well as her recently adopted Golden Doodle, Kubo.


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Pediatric Dentist, Walnut Creek, CA 94596 - Dr. Jason Renner, Dr. Don Do and Dr. Duane Spencer   Serving patients in the surrounding cities and areas of Walnut Creek, California.

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