Most of the Docs in the old 12th group were from multiple specialties...the O-6 Group Surgeon was a Hem-Onc-Immunologist...His replacement was an O-5 Internist .... one O-3 was an OBGYN, ...one O-3 ER doc...and I was and am a CNS Engineer (60W). My duty MOS was 60A5G as the O-4 SF Group Medical Platoon Leader. We all worked as 62B field surgeons in multiple capacities. There was also one O-3 Ortho on the Forward Medical Operations Team at the 3/12 in CA at the time I think.
We all went on to get 5G SF Qualified via the RCSFOQC at the USAJFKSWC at Ft. Bragg. I don't know whether the SF Docs now are assigned in 5G slots or not or even what the medical support structure is in the current groups and AOs.
I would suspect that one could be pretty valuable as a 60E5G GMO in SF at this time...I do agree with the Sports injury aspect as well as the Physical Training expertise..
....as these are certainly needed in today's Force structure.
You might want to look into the 19th & 20th Groups as an option also...I understand there continue to be Battalions added occasionally...as has recently happened here in Texas.
http://www.agd.state.tx.us/rr/medical.htm