On my field trip to Small Claims, I noticed that when dealing with a corporate entity (for example, Damian Newhart, D.D.S., Inc.) Judge Flynn seemed to take very seriously what is registered with the Secretary of State as a corporation’s legal address and agent for Service of Process. As of today, the Secretary of State still shows Damien L. Newhart, D.D.S., Inc. having a legal address at his former Laguna Niguel office on Rancho Niguel.
This might help you in the unlikely event that (1) Dr. Newhart actually shows up for his hearing, and (2) he claims not to have been properly served. You might want to have some evidence of having tried to communicate with him at that address. For example, your Demand Letter sent to that address returned “Undeliverable”.