Our Team

Maggie T. Chao DMD-Pleasanton Prosthodontist

Dr. 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.

Pleasanton Dentist Dr. Dr. Chao


Orson Leong, DDS – Pleasanton Dentist

Dr. 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.”

Pleasanton Dentist Dr. Orson Leong


Michael Okumoto, DDS – Pleasanton Dentist

Dr. 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.

Pleasanton Dentist Dr. Michael Okumoto


Yi Luo DDS-Pleasanton Prosthodontist

Dr. Yi Luo earned her DDS from UCLA School of Dentistry in 2016. She completed not just one residency, but two! Her first was an AEGD at UCLA where she found a fondness and inclination for complex dentistry. She pursued her education in Prosthodontics at UCSF and graduated with numerous honors. Dr. Luo picked Prosthodontics as her specialty because it is the heart of dentistry. Prosthodontists strive to understand function and develop a smile that can last because the bite or occlusion is balanced. Dr. Luo feels that Prosthodontics is the ultimate blend of art and science.

When it comes to science, one of Dr. Luo’s many accomplishments is that she has published numerous articles. The most recent of which studies dental implant risk factors. Out of this collaborative study, she and her colleagues developed an online interactive risk assessment that lets people learn about their risk factors for dental implant treatment. Feel free to take the assessment at www.mydentalrisk.com and to ask Dr. Luo about it.

Dr. Luo Joined Pleasanton Prosthodontics in 2020. Dr. Chao and Dr. Luo hit it off immediately when they started talking 3D dentistry. Patients have taken to Dr. Luo also-not only is she good with her hands, She is a technology whiz and kind hearted to boot!

Personally, Dr. Luo grew up in Beijing, China and she studied Stomatology at Peking University. She and her husband are new parents and are enjoying the adventure of raising their son here in Pleasanton. Please come by to meet Dr. Luo if you haven’t already!

Pleasanton Dentist Dr. Dr. Yi-Luo-DDS


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