Since completing his endodontic residency and receiving his Masters Degree at Harvard in 1980, Dr. Schoeffel has been proactive in many endodontic areas. He has maintained a private practice limited to endodontics in Southern California, and has lectured globally and frequently on clinical endodontic techniques.

As an author of clinically relevant endodontic techniques and methods, his work has been published in both peer reviewed and other publications. In addition to serving as an endodontic consultant to several companies, he has been awarded two U.S. patents for technologies and methods in the field of endodontics.