Alternative health care is at its zenith. Well, Dr. O'Brien sees regular patients. He cares for their spinal and neurological problems. Also, he sees new patients, which may require x-rays or lab work. It might need differential diagnosis by examination.
Every patient requires an orthopedic, neurological, and physical exam.
This leads to possible x-rays or work in the lab. Also, having a successful career and being pretty much financially independent is a plus. Last, being his own boss is very favorable. For the unfavorable, paperwork that is required now a days for insurance. Second, testifying in court on different person injuries can be unfavorable.