Any sciatic pain doc recommendations (for my son)?

[Ramsker]

My son (he'll be 22 this month) has been having a rough time with sciatic pain. He's been seeing our chiro and the PT there for awhile, but it's really not seeming to help. They are looking to line up an MRI as a next step, but I think it's time to pursue some other options. He's pretty miserable.

Anyone here have a spine/ortho doc recommendation based on personal experience or family member who had sciatic pain and found relief? We're in Highlands Ranch, so ideally someplace not on the other end of town--but at this point I'm just looking for options to help the kid out and will consider anything. I'm also going to look into what our insurance has on their site, but figured was worth a shot to ask here.

Thanks in advance for any input!