I'm even ok NOT making Heme/Onc money in Nephrology as long as my quality of work improves compared to Hospitalist and I get to spend enough time with my family; I think I'll be happy. However, sounds like Nephrology doesn't even offer that.
It could if you subtract the chronic HD part of things. this is only feasible if you open up your own private practice.
but there is NO money to be made (you make LESS than PCP if you do nephrology minus chronic HD)
this is because there are no office CPT billing codes unique to nephrology like cardiology with echo/stress test/etc.. GI with colonosopy... hemeonc with chemo... PFTs with pulm... etc...
PCP has certain CPT codes for quality management that you can "nickel and dime" your way to a nice sum with.
logically you could do nephrology then do GIM + nephrology minus chronic HD.
just make sure you have a colleague who can accept your patients CKD5/ESRD at an HD center. You can manage them up to ESRD and get the AV fistula in place with vascular if you wish.
this is what I do
I have found my CKD5 patients have "lasted a long time" after their AVF has been put in at eGFR under 15
as long as they're not eating phosphorus, potassium , sodium fast food junk, the uremia diminishes their appetite to the point that they dont eat that much or drink that much and they are just in a balance. not bad enough to start HD. not good enough to take down their fistula.
all too often once a patient is "a little uremic" (very subjective term) - onto the machine you go! money time.
back before HD became a medicare benefit, patients would hang out with creatinines in the 20s or higher.
as long as BP, potassiu, and bicarb were controlled, there was no imminent need to go onto the HD machine
plus "fatigue" can be anything from OSA to depression to anemia.