Meet The Team

Our office team works well together.  We enjoy creating great smiles for our patients and celebrating the holidays with each other.

Dr. Tina Siu


Dr. Tina Siu went to the University of Southern California School of Dentistry where she was awarded her Doctor of Dental Surgery degree, certificate in Orthodontics, and Masters of Science in Craniofacial Biology. She lives in San Marino with her husband, Dr. Winston Chee, a dentist and tenured professor at the Ostrow School of Dentistry and her two kids, Michelle and Daniel. Michelle attends medical school at Columbia University, while Daniel is a dental student at the Herman Ostrow School of Dentistry at USC.



In her leisure time, Dr. Siu enjoys cooking and golf.

She is currently a member of the following professional associations:

•The Edward H. Angle Society of Orthodontics
•Pacific Coast Society of Orthodontists
•American Association of Orthodontists
•American Board of Orthodontists (board certified)
•San Gabriel Valley Dental Society

As a dedicated member of the San Marino community, Dr. Siu enjoys engaging in volunteer work in and around her city. She has had the honor of being on the Board of Trustees for the San Marino Schools Foundation for over 12 years and was a member of the Crowell Public Library Foundation Board for three years. She continues to support both organizations through volunteering and donations. Currently, Dr. Siu's main focus is on the San Marino Chamber of Commerce, an organization designed to help small businesses in San Marino. In addition, she donates her time to "Young & Healthy", an organization devoted to providing high quality health care to underserved portions of the Pasadena community.


Dental screening for schools          Career Day presentation for middle school


                                                              Donation to Family Care Kits for Ronald McDonald House

Dr. Siu's orthodontic treatment philosophy is personal and conservative. She is personally involved with the treatment of each and every patient, considering each with his or her individual needs and goals in mind. Dr. Siu also understands that conservative treatment is often the best treatment. She tries to avoid prescribing extractions and does her best to minimize treatment time. Dr. Siu enjoys treating all her patients from the elementary school children who love colorful brackets to the teenagers who are dealing with the difficulties of junior high and high school, and even the adult patients who want to have healthy fabulous smiles for the rest of their lives. Dr. Siu's favorite part of orthodontics creating a sense of confidence for her patients by giving them smiles that they can share with the world.


Front Desk Receptionist

Kathy is our superstar out front, greeting our patients when they arrive and making sure they are comfortable from the moment they walk through the door. She also handles many of our administrative needs, such as billing and appointment scheduling. Kathy spends a lot of time with her son, Trevor. Together they enjoy going on summer trips to amusement parks, watching football, and playing with their cat, Ruby.


Dental Assistant

Angie is great with our patients at every stage of care. She is very welcoming when they first arrive and she is both friendly and professional when patients are in treatment. She does an excellent job with everything from imaging duties to chairside assistance for Dr. Siu. Angie is a proud mom of two wonderful boys and she loves spending time with her family. She also enjoys tending to her family's three horses.


Dental Assistant

Erika is a Registered Dental Assistant and a Certified Orthodontic Assistant who provides valuable service to our patients. She is an expert in digital imaging technology and she is a very capable assistant to Dr. Siu. Additionally, Erika takes digital radiographs and photographs for our beginning and final records. Erika loves seeing our patients change throughout treatment, finishing with beautiful smiles and increased confidence. She has two children at home, Carlos and Violet, who she loves to spend time with and watch grow. She especially enjoys doing art projects with them.