That part is true. Whenever my chronic dialysis patients start talking about their sinus congestion or their dysuria or their constipation or abdominal pain, I wonder what their PCPs are even doing.
well im sure it is a confluence of factors
the HD patients during their HD 3x a week (or more) are a captive audience. they dont care that the nephrologist is doing HD rounds. they see a Doctor and will ask all their medical questions. they got no where else to be anyway during those hours. only issue is you cannot be reimbursed for a clinic visit during this time so it's all free care if you choose to prescribe something or give advice
these patients are already going to the HD center 3x a week. so tey only have 2 or 3 weekdays available per work week to see the PCP (unless PCP has weekend horus). sometimes thye have to see cardiology, vascular surgery, radiology etc.... anyway
Maybe PCP did give the patient flonase or azelastine or something. but it did not work. the patients want a second opinion and know that nephrologists are trained as Internists.
maybe PCP referred to ENT but due to ENT's limited office hours and scheduling and the HD schedule, the patients cannot find a proper time to align everyhting.
bottom line you cannot "just be a renal specialist only" for your chronic HD patients. i mean you could try to be firm about it but if the patient cannot access PCP easily, you end up feeling guilty about it and give free care at the end of the day.
other subspecialists do not have to round on HD and talk to patient so often (4 times a month ... sometimes you see them more when you are rounding on other patients perhaps and are forced to say hello)
edit: for the PCPs in NYC who have a good IPA and see a lot of medi/medis or just managed medicaids (zero copay no deductible), these primary care patients can come four times a month to your OFFICE and you can bill 99213 or more 4 times a month... without having to travel to the HD center. nice