Even though it's a tertiary hospital, the IM residents at BWH do a good number of procedures.
They do all their own CVC's, taps, LPs, etc. I don't have exact numbers, but by the time residents reach their 3rd year, they feel comfortable supervising/doing any of the main procedures that come their way. With the exeption of the oncology service, the fellows play a pretty secondary role, and are not the ones making the primary management decisions. This is most evident in the MICU, where up until a month ago, there were no critical care fellows in the Brigham MICU, and it is the medicine senior and intern who run the unit. There is a fellow now, but the fellow plays more of a supportive role, and is there solely for backup and teaching (and they are not in-house at night). The IM senior is still expected to be in charge of the MICU. There are also other critical care units where there still are no fellows, such as at the Faulkner MICU, which is an affiliated community hospital the residents rotate at. The Brigham is building a second MICU right now, so there will be even more critical care experience for the residents starting next year, and therefore more procedures.