I suppose it would depend on how many you can see in a day. These patients can get pretty time intensive if they are wanting you to take a primary care approach, talking to family, social work, etc, it could eat up a lot of time. Plus, you have to think about if you're burning through overhead, rent and such, back at your office while you're doing off site work. If so, that would eat into the $300. Usually they pay some internal med or FP to do this to burn through and renew a bunch of meds, renew foley orders, treat a million UTIs and pronounce people.