Dr. Hoefflin is board-certified by the American Board of Plastic Surgery and is a Fellow of the American College of Surgeons (F.A.C.S.).

Dr. Hoefflin was Assistant Clinical Professor (1979-1989) and Associate Clinical Professor (1989-2003) in the Division of Plastic Surgery at UCLA Medical Center.  He received the Teacher of the Year Award, (1985-1986), and Best Clinical Faculty Teacher (2002-2003). He was Chief of Plastic Surgery at UCLA-Santa Monica Hospital Medical Center, (1982-1989) and Chief of Plastic Surgery at Brotman Medical Center, (1980-1985). He is a visiting professor for the International School of Aesthetic Plastic Surgery. 

Dr. Hoefflin is the Immediate Past President of the Los Angeles Plastic Surgery Society. Dr. Hoefflin is a member of numerous professional organizations including the American Society for Plastic Surgeons, American Society for Aesthetic Plastic Surgery, Lipoplasty Society, Bay Surgical Society, Plastic Surgery Educational Foundation, The Rhinoplasty Society, The Royal Society of Medicine, and is a Fellow of The International College of Surgeons.