First, that "70-80%" is made up and probably represents someone just talking off the cuff -- don't put much stock into these numbers, they are wrong. Perhaps if you qualified it to 70% of what a generalist in primary care might do, you would be more on target. There are very few (perhaps no) NPs and PAs who work outside of the primary care arena, so all of those medical specialties (ortho, optho, rads, rad onc, derm, psych, all the IM subspecialties, neuro, etc etc.) represent things non-physicians won't be doing equivalently. There are very few NPs and PAs involved in surgery, so that too represents a huge world of things they aren't comparably involved in. So we are really talking about positions in very generalist primary care. Within that field there is certain limitation of autonomy -- very few will work without some physician supervision at some level. So the real answer is that if you want to work alongside a physician in a generalist primary care practice with some supervision, these ancillary health professional jobs probably suffice.
Folks who actually are PAs feel free to correct me -- I'm just calling it as I have seen it.
actually at this point more pa's work in specialties than primary care. below is a list of pa's avg salary by specialty, not to show $$ but just to give an idea of fields that pa's work in. LOTS of pa's at this point work in surgery as opposed to your contention. in fact there are a # of surgical residency programs for pa's now. see
www.appap.org
anyway, the specialty list as promised:
Specialty MTI
Cardiovascular/Cardiothoracic surgery $104,681
Dermatology $100,735
Neurosurgery $93,979
Emergency medicine $92,896
Surgical subspecialties $91,364
Orthopedics $90,093
Critical care medicine
$89,113
Plastic surgery $88,900
Pediatric cardiology $88,086
Interventional radiology $87,603
Anesthesiology $86,801
Trauma surgery $86,752
Geriatrics $86,712
Pain management $85,014
Occupational medicine $84,801
National mean $84,396
Urology $84,204
General surgery $83,296
Diagnostic radiology $82,837
Surgical oncology $82,571
Medical cardiology $82,374
Addiction medicine $82,034
Otorhinolaryngology $81,233
Hospital medicine $80,563
Psychiatry $79,104
Medical oncology $78,972
Family medicine $78,893
Radiation oncology $78,514
Pediatric gastroenterology $78,504
Allergy $78,241
Pediatric neurology $77,664
Pediatrics $77,452
Pediatric oncology $77,047
Medical gastroenterology $76,858
Medical rheumatology $76,366
Medical neurology $76,361
Medical nephrology $76,295
Medical endocrinology $75,157
Obstetrics/Gynecology $74,658
Public health $73,180