Be wary of physical therapy offices that provide only passive types of therapy.
Modalities such as hot/cold pack, massage, electrical stimulation and ultrasound will give temporary relief but they are not a cure to your problems.
Be wary of physical therapists who do not teach you something new for your problem each appointment. Whether it be a new exercise or self-help tip.
Be wary of facilities that do not have private treatment rooms and therapists seeing more than one client at a time. Your time is valuable and your body deserves exclusive attention from an experienced physical therapist.
Be wary of facilities that only provide short term therapy with a set amount of treatments and discharge early without offering other options.