I've been a mental health patient (bipolar disorder) for 15 yrs. I've seen many doctors in 3 different states including CA. I have had good doctors. However, Dr Heidenfelder is THE BEST doctor I've had in 15 years. He also has a very relaxed approach to his practice of which makes me feel very comfortable. Do not hesitate for a moment to schedule an appt if you are seeking one terrific psychiatrist.