These doctors are awesome. They go by various titles, sometimes including sports medicine but that's misleading. They are MDs and can be very helpful in diagnosing a problem and making a referral to a specialist. My Dr. uses "Physical Medicine and Rehabilitation" in her title.

My Dr is much better than my PCP at diagnosing a myriad of physical problems. The only downside I can see is if a patient has a problem requiring the help of a psychiatrist or psychotherapist.