Chimborazo #2 was a ward/divison within the main Chimborazo complex. Oakwood was the closest cemetery. See:
http://www.mdgorman.com/Hospitals/chimborazo_hospital.htm

Burial records are not commonly found in the NA Compiled Service Records, with the exception of some Federal POW camp deaths. We are fortunate to have some hospital records, and these, in the main, are from Richmond hospitals.

I've sent an inquiry to the Oakwood coordinator to see if he has shown up in recent searches.