As of today, it would depend on where he worked. Some hospitals would fire him. He could still run his own clinic without interference - until the blue states start having medical boards revoke the licenses of unapproved doctors. And of course the medical schools will start filtering out people like him so that every doctor is a good establishment puppet.
As opposed to our private healthcare system where he would also be fired?
As of today, it would depend on where he worked. Some hospitals would fire him. He could still run his own clinic without interference - until the blue states start having medical boards revoke the licenses of unapproved doctors. And of course the medical schools will start filtering out people like him so that every doctor is a good establishment puppet.