Meet The Team

Call (909) 866-0886

At the core of Summit Dental is a friendly team of professionals that are dedicated to your utmost comfort and optimal oral health. 

Angela Sakai

Office Coordinator

Angela Sakai, our Office Coordinator has worked in the dental field for 5 years and has been at Summit Dental for 3 1/2 years.  It is very important to her to work with people that have strong core values and work at a place that makes a positive difference in the community she lives in.  Angela strives to deliver friendly, exceptional customer care to every patient she encounters!  In her free time she enjoys reading, spending time with her family and grandson, cooking,  and gardening. And, she is working on getting her bachelor’s degree in business.

Samantha Hamilton

Patient Coordinator

Samantha Hamilton,  our Patient Coordinator  and dental assistant has been working in the dental field for 2 years.  She picked dentistry as a career because she is fascinated in teeth and helping others improve their smiles. Although, she is new to dentistry in comparison to our seasoned staff,  Sammy brings a welcome vibrancy to the practice! When she’s not working, she loves spending time with her family, going on road trips, and taking her dog on fun adventures.

Jan McGinness

Registered Dental Hygienist

Jan McGinness, our Registered Dental Hygienist has worked with Dr. Yoshida since 1997!  She has an extensive background in dentistry, Jan has been a dental assistant and teacher at a hygiene school in the past.  Jan brings invaluable experience to our practice, but most importantly, she is known for making patients feel like family.  Jan loves Big Bear’s beauty and the mild weather!  When she’s not working, she is hanging out with her family and “herd” of Great Danes!  Jan is also a very gifted photographer of nature. Some of her work is displayed at our office!

Stephanie DeLeon

Registered Dental Hygienist

Stephanie DeLeon, our Registered Dental Hygienist has been in dentistry for 6 years. Before becoming a hygienist, she was a Registered Dental Assistant at a pediatric dental office. Stephanie became interested in the dental field because of her positive experience as a patient. Her experience and perspective helps her relate to our patient’s needs. And, she is bilingual in Spanish!  In her past time, she enjoys hanging our with her husband and her dog Blue.  She likes swimming, playing tennis and the violin, and going to rock concerts!

Debby Riddle

Registered Dental Assistant

Debby Riddle, our lead Registered Dental Assistant, has been in the dental field for 20 years. Her passion in dentistry is helping patients attain their dream smile.  Debby also enjoys educating patients about the importance of good oral health and the connection to whole body health.  Debby is an expert in making patients feel comfortable and pampered! Outside of the dental practice, Debby enjoys outdoor activities like hiking, biking, and skiing!  Her favorite pastime is being with her family and reading a good book.


We combine experience with the latest in dental technology to deliver the best patient experience possible.



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