Our Team

Maggie T. Chao DMD-Pleasanton Prosthodontist

Pleasanton Dentist Dr. Dr. ChaoDr. Maggie T. Chao earned her DMD from the Harvard School of Dental Medicine in Boston, Massachusetts. She then furthered her training at Harvard to sharpen her diagnostic and clinical skills with a residency in Prosthodontics. During her residency, she was awarded for her achievements in material science research and excellence in clinical care. Dr. Chao also earned a Master of Medical Science in Oral Biology.

Dr. Chao is passionate about dentistry and delivering the highest quality care to all of her patients. She practices the full scope of prosthetic and esthetic dentistry—from veneers to dental implants, crowns, and bridges. She is an expert in full-mouth reconstructions including All-On-4/Teeth in a Day smile transformations.

Born and raised in California, Dr. Chao completed her undergraduate studies at UC Berkeley before moving to Boston for dental school. Having returned to the Bay Area in 2002, Dr. Chao pursued her love for academia as an Assistant Clinical Professor at the University of California at San Francisco. She took a sabbatical at the University to focus on her private practice and raising her children.
Dr. Chao is also recognized for her presentations on her research and innovative clinical techniques at national dental conferences. Dr. Chao keeps up to date with the latest technology as an active member in the American Dental Association, the California Dental Association, the Contra Costa and Alameda Dental Societies, and the American College of Prosthodontics. Dr. Chao is a board-eligible member of the American Board of Prosthodontists. Locally, she is the Prosthodontic consultant to several Study Clubs dedicated to improving the knowledge base of dentists in our community.

In her spare time, Dr. Chao enjoys spending time outdoors with her husband Wan and two children, Jasmine and Rex. She also loves home projects so if you have tips to share—bring them with you!

Dr. Chao is excited to meet you and to find out how she can best take care of you.

Orson Leong, DDS – Pleasanton Dentist

Pleasanton Dentist Dr. Orson LeongDr. Orson Leong is a general dentist with over 25 years of clinical practice in the Bay Area. He is experienced in all phases of general dentistry with an emphasis in cosmetic and implant dentistry. He received his Doctor of Dental Surgery degree from University of the Pacific, Arthur A. Dugoni School of Dentistry and practiced in downtown San Francisco for the first 12 years. Marriage and family provided him the opportunity to relocate in Fremont, where he practiced for another 13 years of private practice. He is a member of several professional organizations including the American Dental Association, California Dental Association and the Southern Alameda County Dental Society.

A native of San Francisco, Dr. Leong loves the Bay Area. In his free time, Dr. Leong enjoys spending time with his family traveling, golfing, scuba diving, fishing, snow and water skiing.

“My philosophy is, first and foremost, to listen and to understand your needs and concerns. Through this two-way communication, we can arrive at a mutual common goal of health, function and aesthetics for a beautiful smile.”

Michael Okumoto, DDS – Pleasanton Dentist

Pleasanton Dentist Dr. Michael OkumotoDr. Okumoto was born and raised in Southern California, and now resides in Emeryville. He obtained a Bachelor’s of Science degree in Human Biology at the University of California, San Diego in 2008. Over the next 2 years, he worked as an assistant business manager at a dental office in San Diego where he developed a passion for the dental field. He then attended the University Of California Los Angeles School Of Dentistry and obtained his Doctor of Dental Surgery degree. He is a member of the Southern Alameda County Dental Society, the California Dental Association, and the American Dental Association.

“My goal is to provide the best dental care possible in a comfortable and friendly environment. I place high value on doctor/patient communication in order to provide my patients with the information they need to make good, sound decisions regarding their life-long dental health.”

In his free time, Dr. Okumoto enjoys listening to music, cooking (and of course eating), and both playing and watching basketball.

Catherine Jin – Registered Dental Hygienist

Catherine Cat is our registered dental hygienist, and it’s always a pleasure to be in her company!  Cat was born in San Francisco and attended Chabot college to obtain her hygiene training.  She currently resides in Fremont, and is fluent in Mandarin.

Making sure that our patients maintain their optimal oral health is Cat’s main goal, and she does a fabulous job at it.  In addition to being thorough and meticulous with her cleanings, she also ensures that her patients are always comfortable in her chair.

In her spare time, Cat loves to travel, and try out new and exotic restaurants.

Jessica Cortez – Registered Dental Hygienist

Jessica Jessica is our Registered Dental Hygienist, and in charge of keeping our gums healthy and our smiles bright! Jessica grew up in Livermore where she attended Livermore high school and Las Positas College. She also attended Carrington College and received her associates degree in Dental Hygiene.

Jessica is loved by all our patients, thanks to her charming personality and gentle touch. She always makes sure our patients feel comfortable during their cleanings, and helps them with any needed oral hygiene tips to take home.

In her leisure time, Jessica enjoys outdoor activities, concerts, traveling, dancing, and spending time with family.

Charlotte Ruiz – Office Manager

Charlotte Charlotte handles all of our front office administrative duties, from scheduling patients, to processing insurance claims, to making sure any and all issues with patient accounts are handled. She’s got a lot on her plate, and she handles it all with the ease of a pro!

With over 15 years in the dental field, Charlotte brings a wealth of experience when it comes to managing our office’s business affairs. She also has a background in dental assisting, having received her certificate in 2002 from Bryman College , formerly in San Jose .

In her spare time Charlotte spends time with her husband, three kids and her three Cats. She loves to reading, cooking and anything that involves being outdoors.

If you’re ready to make an appointment with us, give Charlotte a call!

Misty Delgado- Dental Assistant

Misty is our dental assistant and the engine that keeps the office running. Originally from San Jose, Misty graduated from Wilcox High School in Santa Clara, and currently resides in Tracy. She achieved her certification as a dental assistant in 2013 from Silicon Valley Career Technical Education in San Jose, CA.

Misty’s goal is to make all our patients feel comfortable when they sit in the dental chair and she does a wonderful job doing it.  She enjoys the challenge of having a career in the dental field.  Whenever she manages to squeeze out some free time during her hectic schedule, Misty enjoys going to the beach, hiking, and spending time with her friends and family.