No it doesn't. Obama doesn't need a surgeon general to act.
the SG does a lot of things about education/liason with public, which is big right now. Some pre-emptive action by an SG, when it was outbreaking in Africa, and there might have been better response from the TX hospital people, or neighbors of the vomiting ebola victim, act faster.
EDUCATION is key. SG does a lot of that. Public face of awareness for big issues. So yeah, it couldn't have hurt, and may have helped.