About Our Staff

GRETTA Soriano, RDA - Office Manager

Gretta immigrated to the U.S. at the age of 16. At a very young age, she enrolled herself to Bryman College in San Francisco to obtain a certification in the Dental Assisting Program. She enjoys helping others gain self-confidence through a simple smile.

Gretta has been in the dental industry for the last 8 years and is expanding her knowledge of the profession by attending dental seminars in advancement to dentistry. She hopes to meet people with expertise that may help her mould her skills and induce excess motivation for her in the future.

Gretta is very dedicated to Dr. Lee's Dental Office in Walnut Creek, CA and wishes nothing but success for the upcoming future and events of the firm. That is the reason why she spends three quarters of her weekly time in making sure the office is presentable and appealing to their patients.

During her spare time, Gretta enjoys spending quality time with her eight year old daughter whom she loves dearly.

SAMANTHA DeMaria, Hygienist

Samantha graduated from high school with aspirations to be a dental hygienist…a dream she had since middle school. She completed her associates degree in 2012 at Chabot College in Hayward. Samantha has been working with Dr Lee for 3 years now.

She finds it extremely gratifying, as a hygienist, to provide care to her patients in a calm and caring atmosphere where their comfort and wellbeing is the main concern.

Samantha loves learning and advancing her skills, hygiene is her passion and providing optimum care to her patients is what she strives for. In her free time she enjoys spending time with her wonderful family. She also loves to cook and spend time outdoors. Sam looks forward to meeting you and helping you accomplish a healthy smile.

ALEXANDRA Pilja - Front Office Coordinator/Public Relations

Alex holds a Bachelor of Arts Degree in Liberal Studies. She has experience in several different fields, including public relations and the entertainment/sports industries. She considers herself a "forever student" because she loves pushing herself to grow and learn something new every day.

Outside of the office, Alex enjoys spending time with her family and friends, cooking, traveling, and reading. Dr. Julia Lee's office is a great fit for Alex, as she has true compassion and genuinely wishes the best for our patients' well-being.

JESSENIA Ramos - Financial Coordinator

Jessenia is a Bay Area native. She studied at San Francisco State University and Carrington College. She entered the dental field in 2014. She is both a Dental Assistant and Treatment/Financial Coordinator and aspires to be a Registered Dental Hygienist. 

Her favorite vacation spots are Puerto Rico and Puerto Vallarta; she enjoys the culture that both places have to offer. Jessenia’s passion for dentistry grows each passing day as she truly enjoys what she does.

RICHARD Plamenco - RDAEF Lead Assistant

Richard holds an Associate in Applied Science degree in Dental Assisting from Heald College. Upon completion of program, Richard pursued an Associate of Arts degree in which he is able to utilize to further his studies down the road for he is an avid learner. He's been working in the dental field since 2011. He ultimately takes pride in his career for this is something he enjoys doing. Richard enjoys reading science and historical fiction. He spends countless hours doing research related to all aspects of dentistry to gain sufficient knowledge as his career moves forward. He has passion for pets and the wild life and is very conversational. Richard goes above and beyond to fulfill an organized work environment with excellent teamwork!


Charmaine moved to the Bay Area from Long Beach, CA in February 2015. She graduated from Concorde Career College and became an RDA in 2011. She began her career gaining experience in pediatric dentistry where she discovered a passion for working with children. To Charmaine, nothing beats seeing patients leave happy and excited to come back to the dentist – it truly warms her heart. She hopes to put a smile on every patient's face before they walk out of the door!

RAUL Landaverde - CDA

Raul came to the United States from El Salvador in 2007. He started taking night classes to learn English as his second language, and in 2010, he went to the Regional Occupational Center in Orange County, California, where he became a Certified Dental Assistant. He recently moved to the Bay Area with his family. He is currently working toward becoming a Registered Dental Assistant and would eventually like to become a Registered Dental Hygienist. Outside of the office, he likes to cook, meet new people, sight-see, and be outdoors. He loves animals and even likes to rescue strays and help them find forever homes!

About Us

When you visit our office, your smile is our top priority.  Our entire team is dedicated to providing you with the personalized, gentle care that you deserve.Part of our commitment to serving our patients includes providing information that helps them to make more informed decisions about their oral health needs. 

Contact Us

Dr. Julia Lee
2211 Olympic Blvd
Walnut Creek, CA 94595
New Patients: (925) 350-6090
Current Patients: (925) 930-8488

Office Hours

Monday: 7:00am - 6:00pm
Tuesday: 7:30am - 6:00pm
Wednesday: 7:30am - 6:00pm
Thursday: 7:00am - 6:00pm
Friday: 7:30am - 5:00pm

Closed for Lunch From 1pm to 2pm