About Las Positas Family Dental

Meet the team

Thi Hoang, DDS

Theresa Hoang, DDS

Kawelona Doctolero- Tolentino, RDH

Registered Dental Hygienist

Janelle Cruz, RDH

Registered Dental Hygienist

Kayla Cabanayan, RDA

Jalon Dagun, DA

Amanda Streif

Office Manager

Gary Houser

Office Manager

A place to laugh, be healthy, have fun and be family

Las Positas Family Dental is a team-first and patient-centered dental practice in Livermore, California, provides family, cosmetic, implant, and general dentistry to community members of all ages. Thi Hoang, DDS, Theresa Hoang, DDS, and the team dedicate themselves to providing people with the high-quality, personalized, gentle dental care they deserve.
The Las Positas Family Dental team has extensive knowledge and years of experience. They combine their expertise with cutting-edge dental treatments and use the latest state-of-the-art equipment expected from modern dental practices. For patient and staff safety, the practice has water treatment and an air quality system as well as instrument washers to ensure proper instrument sterilization.
Cosmetic and restorative dentistry services available at Las Positas Family Dental include crowns (including CEREC® same-day/next-day crowns), bridges, dental implants, veneers, fillings, and root canals (endodontics). People can also benefit from smile makeovers and orthodontic services like the innovative Invisalign® clear aligners for teeth straightening. Patients with urgent problems can access emergency dental care.

Preventive care is a priority at Las Positas Family Dental. The team provides routine checkups and cleaning and helps people optimize their oral hygiene to reduce the risk of pain, disease, and lost teeth. The skilled dentists also provide periodontic treatment for gum disease and oral surgery, including wisdom teeth removal.
The Las Positas Family Dental team doesn’t wear white coats, never judges patients, and won’t pressure people into unnecessary treatment. The team members take dentistry very seriously but not themselves, offering patients a place to laugh, have fun, be healthy, and be family.
For dentistry at its best, call Las Positas Family Dental or book an appointment online today.

A higher standard of care

Our Care

Trustworthy Team – Our guiding philosophy is one of trust. We maintain integrity in our work for you and promise to deliver exceptional care that will enhance your natural smile. We know clear communication is key to a successful visit. Whatever your dental concerns, discomforts or needs are, we encourage you to let us know. The more we can help, the more confident and comfortable you will be.

High-Standard Of Care

We live and work by a higher standard of care. Your dental visit deserves to be extraordinary, and we promise to deliver. At Las Positas Family Dental we are devoted to improving your smile and achieving lasting oral health for every patient that walks through our doors. We are a team made up of highly-skilled and caring professionals, and we work together to provide the best care for our patients. 

Friendly Environment

At Las Positas Family Dental, we treat you like family. You will be met with a welcoming smile and treated with compassion at every visit. Our friendly team members have nurturing personalities and go above and beyond to make your visit an exceptional one. We are active listeners and genuinely care about providing the best comfort possible for our patients.

Patient Education

We not only want to be your dentist for life, we want you to enjoy excellent oral health for life. Because of this, we are committed to providing you with all the details of your care so you can make informed decisions about your healthcare needs and treatment. We will offer professional recommendations and thorough explanations, taking the time to answer any questions you might have. Additionally, our knowledgeable team will teach you oral hygiene techniques so you can maintain the best at-home preventive care possible. 

Advanced Technology

We understand the pivotal role technology plays in providing quality dental care. We use the latest state-of-the-art equipment expected from a modern dental office to assure we are able to provide thorough and efficient exams, cleanings and treatment. We also use our technology to show you the condition of your teeth and gums and to teach you how to maintain it for years to come. We stay up-to-date and use current dental technology to help serve our patients better.

We are dedicated to


Our team keeps our patients’ best interests in mind, and we proudly stand behind our work.


Open communication is vital in building trust with our patients. We actively listen and encourage them to share their needs and concerns. 


We inform our patients in great detail to build confidence so they can make educated decisions on treatment options and maintain lasting oral health. 


We value our time with our patients and maintain a caring and helpful attitude. 


Our goal is to consistently exceed expectations and provide quality work in everything that we do.


At Las Positas Family Dental, our patients are greeted with a welcoming smile. We aim to provide a warm and comfortable environment for everyone.

Latest and Greatest Dental Technology

We are pleased to provide the latest and greatest in dental technology for our patients.
When you visit our dentists you will be treated with the utmost care and skill, as Dr. Thi Hoang, Dr. Theresa Hoang and Dr. Michael Nguyen truly have the desire to ensure that you have optimal oral health. We invite you to contact Las Positas Family Dental today at 925.449.7900 to schedule your appointment and let us wow you with our dental technology in Livermore, California!  
At our practice, we are committed to staying up-to-date on the latest dental technology and techniques to ensure that you and your family receive the highest quality of dental care possible. We strive to meet each patient’s unique dental needs while also providing comfortable treatment and maintaining a relaxing atmosphere. To do this, we utilize advanced dental technology as part of your dental care.
We use dental technology on a regular basis to provide our patients with more accurate diagnoses, comfortable treatments, and efficient results. Our dental technology also allows us to catch dental issues earlier and provide treatment to help you avoid further and more extensive damage later on. Each dental tool and type of technology that we use benefits your dental care in its own unique way. We invite you to contact our office today to learn more!

Thi Hoang, DDS

Thi Hoang, DDS, is an exceptional dentist with extensive experience specializing in cosmetic, family, implant, and general dentistry. She serves her patients and the community at Las Positas Family Dental in Livermore, California.

Dr. Hoang graduated from the University of the Pacific’s Arthur A. Dugoni School of Dentistry in San Francisco, CA in 2007. Post-graduation, she was selected by the faculty at UOP to continue her training through their Advanced Education in General Dentistry (AEGD) program in Union City.

Dr. Hoang is dedicated and passionate about serving her team, her patients, and her community. Her commitment to excellence and the highest standard of care inspires her team to be the best they can possibly be by being trustworthy,  kind, and focused on communication through education.

She is the perfect reflection of who Las Positas Family Dental is, dentistry done best. No white coasts. No judgments. No pressure. A team-first approach that takes dentistry very seriously but not ourselves. A place to laugh, be healthy, have fun, and be family.

Outside of dentistry, she is a loving wife and a mother to three beautiful children: Devan, Jenna, & Amelia. As a family, they donate their time to various non-profit programs such as SF Food Bank and Project Open Hand. When not in the office, Dr. Hoang loves delicious food, good wine, and she definitely has the travel bug. She also roots for the Dubs and the Niners, attends music concerts, and loves trying new restaurants. Recently, she has been spending her spare time at home in the crafts room doing unique projects for family, friends, and the office.

Theresa Hoang, DDS

Dr. Theresa Hoang (Dr. H 2.0) is a cosmetic, family, implant, and general dentist practicing at Las Positas Family Dental in Livermore, California.

Dr. H 2.0 received her bachelor’s degree in psychology from the University of Washington and graduated from the University of the Pacific Arthur A. Dugoni School of Dentistry.

As you may have guessed, Dr. H 2.0 is Dr. Thi Hoang’s spunky younger sister who is equally as passionate about her dental career. Dr. H admires the caring, family-friendly environment at Las Positas Family Dental and is heavily inspired to help anxious patients overcome their fear of going to the dentist. She works diligently to set up an environment that allows for open communication between her and her patients and ensures that her patients understand the “whys” of the treatments that she recommends. She is always ready to tend to her patients’ needs and brings a big smile to their faces with her humor.

In her spare time, Dr. H enjoys traveling, dining at local restaurants, binge-watching Netflix shows, and spending time with her five nieces. On the weekends, you can probably catch Dr. H at a concert or music festival. If you have any restaurant or TV show recommendations, she is always open to them!

Kawelona Doctolero- Tolentino, RDH

Kawe graduated from the dental hygiene program at Chabot College. Kawe was actually born in Hawaii, on the island of O’ahu, and moved to California when she was a child. Prior to becoming a hygienist, Kawe worked part time at Auntie Anne’s Pretzels, then began her journey in the dental field as a dental assistant.

She always saw herself working in the medical field and was torn about becoming a nurse because she wanted a field more focused and specialized. Kawe realized that she grew up in a family that did not take care of their teeth, and she wanted to do better for them and herself. She wanted to take better care of her own oral health as well as educate her family on the importance of dental hygiene. That sole realization determined her career choice, becoming a dental hygienist to not only share her knowledge with her family, but also better her community. Kawe loves that being a dental hygienist can be challenging but rewarding and fulfilling at the same time. She enjoys helping patients build their self -esteem by fixing their teeth and smiles. The most rewarding part of her job is being able to put a patient’s anxiety and fears about dentistry at ease.

In Kawe’s spare time, she loves to spend time with her family. Some of her hobbies include hula dancing, bike riding, walking her dog, hiking around the bay and going on adventures with her boyfriend. Kawe enjoys catching up on Netflix series and reading mystery, thriller and suspense novels. An interesting fact about Kawe is that she is a lefty! Being left-handed in dentistry is not only rare, but can be challenging to work with a team that is mainly right handed. In the future, Kawe would like to become a hygienist that is able to travel to different parts of the world and educate patients in need.

Janelle Cruz, RDH

Janelle received her Bachelor of Science degree in dental hygiene from the University of the Pacific Arthur A. Dugoni School of Dentistry. She also holds an Associate of Arts degree in Spanish.

Patient care is Janelle’s number one priority and with her gentle touch, she ensures every patient in her care is comfortable. Being very thoughtful, she also provides great hospitality and is a great listener. Janelle is very sweet and detail oriented, which makes her a great fit for our office and to our patients.

Janelle grew up in Redwood City and currently travels from San Mateo to care for her patients here. When not in the office, her son keeps Janelle on her toes! In her free time, she enjoys crafts and photography. One of her goals in life is to learn as many languages as she can and travel the world with her family.