Mark Bertolini has helped Oscar Health move toward profitability, after taking over as CEO of the health insurer a year ago. Now, he says the company's next phase of growth and profitability will focus on tapping into the employer market. That effort will include "going after the 71 million lives that are in small group and middle market employers, where most employees are over-insured to take care of the few sick people in the group to get a level premium," Bertolini explained, ahead of the company's inves ...