AOA Webinar: What Is OCC? Page ContentJune 22, 2012: In this webinar, Ronald E. Ayres, DO, and Stephen M. Scheinthal, DO, explain the changes to OCC that went into effect Jan. 1, 2013. Webinar - What Is OCC? Share This Your browser does not support this functionality. More OCC Resources For more information on osteopathic continuous certification, visit our OCC page. Download the PowerPoint featured in the "What is OCC?" webinar.