 Hoefflin became Assistant Clinical Professor of Plastic Surgery at UCLA Medical Center in 1979.In 1989, he was promoted to Associate Clinical Professor.Hoefflin was a member of numerous professional organizations where he regularly taught and lectured including The American Society for Plastic Surgeons, American Society for Aesthetic Plastic Surgery, a Fellow of The International College of Surgeons, a Fellow of the American College of Surgeons, the Plastic Surgery Educational Foundation, President of the Los Angeles Society of Plastic Surgeons and was President of the UCLA Plastic Surgery Society for 7 years and was awarded the UCLA Plastic Surgery Clinical Attending Teacher Award twice (1985, 1986).