After 37 years, Mike Witte announced that he will step down as the medical director of the Coastal Health Alliance in the fall, and ramp up his work with a Sacramento-based nonprofit that advocates for health care reforms. 

“One patient said, ‘Thirty-seven years and you’re gonna leave me?’ I said, ‘Well, maybe I should leave while you’re doing so great,’” he joked. Dr. Witte, who helped found the clinic that eventually became the Coastal Health…