There are quite a few. I had the opposite preference though, so I don't know as many programs that are outpatient focused. Here's what I know based on general reputation and my experience when I applied/interviewed (which was about 5 years ago, so some things could be different...)
If you like outpatient, Mayo is probably the top place to be. I have yet to meet anyone who says otherwise.
I have been told most NYC programs are super heavy on inpatient. If that's true, avoid them. I had zero interest in NY so I really didn't look into any.
UW is a powerhouse program, but definitely more inpatient heavy than Mayo (as are all th other top programs). In CA, pretty much all the programs have an outpatient focus. Stanford is the most well-balanced, but still has a very good outpatient training. UCLA and UC Davis are very outpatient oriented, and very good programs. I don't know as much about Irvine other than it's more outpatient focused as well. I know very little about Lona Linda but I assume it's the same.
UVA was very outpatient oriented when I applied. So was U Wisconsin, but I believe they built a new rehab unit or hospital. MCW is overall very well balanced (though more inpatient heavy as a PGY2, though I belive they are working to move some rotations around). I think Rush was more outpatient focused, but it's hard to remember. I think U Minnesota was more inpatient, but it's hard to remember. Loyola definitely was, but I don't think they have a program anymore. I didn't interview at RIC (SAL now?) but it is obviously more inpatient heavy, as is Schwab. I think UNC is fairly balanced too. VCU seemed a bit more heavy on inpatient, but the balance was still pretty good.
Considering the general preference for outpatient PM&R these days, I imagine others will be able to offer more helpful advice, but hopefully this was a start.