O'Brien is a small PT center located in Scottsdale close to Mayo Clinic. Although I chose them primarily because of their proximity to my residence, they turned out to be very effective in treating my strained forearm.
As far as I can tell, their staff consists of 3 persons, but they run a tight ship and form a strong team. The namesake Patrick O'Brien is knowledgeable about root causes of your ailment and provided a focused plan that resulted in significant improvement. Josh and Nicole are very helpful too during the treatment sessions and in answering questions related to insurance.
I would have gladly continued further treatment for a 100% recovery if not for my calendar/insurance coverage. The only reason I'm docking a star is because there were occasional delays in answering my insurance questions and a couple of reschedules when Patrick / Josh were not available. This is to be expected since they are a small outfit but no lesser than other PT centers in terms of effort or effectiveness. I recommend them for anyone looking for effective treatment at a center that is not so crowded that you have to wait for personal attention.