would you mind sharing a little information on 30 day globals and CPT billing or some resources to learn more?
Sure. The really short version is that medical billing is billed 'per visit'. So if you have a patient who comes into the hospital (or the clinic), you bill them for a consult based on level of complexity (1-5) and then you bill them each time you see them afterwards with a different code for some version of follow up. So if you have a patient admitted to the hospital, you get to give them a somewhat larger bill on the first day for the consult, and then bill them every single day they're in the hospital as you manage their problems.
For surgeons (and I think this is all proceduralists), you do medical billing until you decide to operate on them. Once the decision to operate or do an invasive procedure is done, you then bill them once for that procedure and for the next thirty days you don't bill them again. So if they had appendicitis, you bill them once for appendectomy and they give you a lump sum payment that covers whatever happens afterwards. If you send them home that afternoon from observation and they do great, fantastic! You made the system a ton of money! But if they stay in the hospital with a post-op abscess and wound complications for 7-14 days, you just lost the hospital a ton of money. As a surgeon you'll still get your proceduralist piece (this is assuming a hospital employed type model, but it is similar for PP) but you're not billing them for the time you spend rounding on them or managing their post-op complications. The money you get from doing an operation is >>>>> how much you get for a typical medical follow up visit, but you have two or three of those every other day (on average) vs seeing 20 medical patients every single day.
Because of this, where money is made in a surgical type field is in the actual operations/procedures, not the follow up care and, for the most part, not the pre-op and consultations either. While you do make money from those, it pales in comparison to the money/RVU generated from actually doing an operation.
There are barriers keeping NPs and PAs from doing the operations which are and probably will eventually be eroded, but if they can't do them with the same level of quality that a surgeon or gyn doc can, those patients will be sitting in the hospital with multiple complications that are not generating money compared to an efficient, high quality surgeon. So even if the day comes where they try to operate truly and completely independently, it is very unlikely a hospital would hire them to do that over a physician unless said NP or PA can demonstrate the same level of quality and reliable outcomes of a surgeon or gyn.
From personal experience, at PGY7 I am *just now* starting to feel comfortable and confident to do big operations reliably and safely and I have ~5 years more of learning and tinkering before I will be up to speed after a surgery residency and fellowship. Any other surgeon on this forum will tell you the same thing, that it really does take a decade of intense training and practice before you are safe, confident, reliable, and reproducible. NPs and PAs won't do that and won't even attempt to do that. If they take short cuts (and they will) they'll find out
why we spend so much time training in a very short order. Hospitals are not stupid. They want to make money. This is not the way to make money and not the spot where cutting cost on an upfront salary will somehow produce more revenue.
Instead, what you see is that the pieces of surgery that can be managed by a non-surgeon (pre-op and some pieces of the work-up and initial consultation, the immediate post-op, the surgical follow up, floor management inpatient, etc.) are being given to NPs and PAs to keep the surgeons in the operating room and build teams that can physically do more operations by allocating more of a surgeons time to actually being in the OR suite. I suspect this will continue to expand over the next decade. When done well, it is quite safe and does increase productivity and gives very reliable quality and reproducibility of outcomes. It also makes a lot of surgeons and OB folk quite happy because they get to spend more time doing what they love (surgery and babies) and less time doing paperwork, documentation, and orders.