The field of PT is so specialized now with certifications available for very unique treatments the PCP’s and other Doctors can’t keep up with it. A patient has to be proactive to find solutions for ailments Doctors tend to treat with medication rather then trying to get to the root cause. Pelvic floor PT and needling are great examples. Neither treatment would require outpatient protocol or inpatient. That is how I define an invasive treatment. You don’t have a team of medical professionals participating in the treatment either.