Meet the Team

Richard Quan, D.D.S.

Dr. Richard Quan, a native of San Francisco, received his Bachelor’s Degree from UC Berkeley, and his Degree in Dental Surgery from the University of The Pacific. He furthered his education with his Orthodontic Specialty training at UCLA. Dr. Quan is a highly regarded orthodontist, practicing in the Evergreen and Berryessa areas for over 30 years. His practice consists mainly of adolescents but highly encourages adults to seek orthodontic treatment as well. Dr. Quan believes there is no age limit to having a beautiful smile.

Tatiana Witte, D.D.S.

Dr. Tatiana Witte earned her Bachelor of Science degree in Biology from Ohio State University. She then obtained her Doctorate of Dental Science degree from the University of California Los Angeles, where her love of California living began. She went back to the East Coast to complete a Master’s Degree in Dental Sciences from the University of Rochester and Orthodontics Specialty training at the Eastman Institute for Oral Health. Dr. Witte was more than happy to return to the sunny West Coast after her studies and call the Bay Area home.

Rene Yabar, D.D.S.

Dr. Rene Yabar, D.D.S, was born and raised in Peru and received his Doctor of Dental Surgery Degree and First Certificate in Orthodontics from Cayetano Heredia University. Wishing to continue his studies, Dr. Yabar moved to Farmington, CT where he completed a Postdoctoral Fellowship in Orthodontics and subsequently, obtained his certificate in Orthodontics and TMJ Disorders at Eastman Institute for Oral Health-University of Rochester, NY. He has also completed a mini-residency in dental sleep medicine at UCLA and has been active in the treatment of children and adults who suffer from obstructive sleep apnea.

Dr. Yabar was part of the clinical panel at the Craniofacial Anomalies Center in Lucile Packard Children’s Hospital-Stanford. Dr. Yabar has proudly been practicing Orthodontics in the Bay Area Since 2007.