Why Doctors Want Out of Obamacare

This is from Doctors Complain They Will Be Paid Less By Exchange Plans - Kaiser Health News: 

Physicians are uncomfortable discussing their rates because of antitrust laws, and insurers say the information is proprietary. But information cobbled together from interviews suggests that if the Medicare pays $90 for an office visit of a complex nature, and a commercial plan pays $100 or more, some exchange plans are offering $60 to $70. Doctors say the insurers have not always clearly spelled out the proposed rate reductions.