Dr. Penny Siriwat has been practicing Orthodontics in Anaheim since 1986 having treated thousands of patients in Southern California areas. Prior to her private practice, Dr. Siriwat was in full time teaching as Assistant Professor of Orthodontics at Washington University School of Dental Medicine in St. Louis, Missouri. She has been recognized as an accomplished Clinician, Research Advisor and Course Master in the field of Orthodontics in both Pre-Doctoral and Post-Doctoral programs. She was awarded The Award of Appreciation by Washington University Alumni Association for her devoted service on the faculty, The Teacher of the Year Award by Orthodontic Graduate students and The Recognition Award by the Senior Class of Washington University School of Dental Medicine.

Dr. Siriwat received her Master Degree of Science in Orthodontics from The University of Chicago. Furthermore, she is one of only 25% of all Orthodontists in the U.S.A and worldwide to be board certified as a Diplomate by the American Board of Orthodontics.