In my mind, the missed cancers could be a problem.
But, there's a lot of "health care" that doesn't really need to happen. A few of my family members have chronic health issues that require medication. These are typically prescribed 6-months at a time, requiring in-person bi-annual follow-ups. That's a waste of both parties time - patient and doctor - as 95% of the time, the result is "here's another 6 months" and 5% "here's the same drug, with an adjust dose".
Those appointments should only occur if there's an issue that requires new dosing or a change of medication. The rest of the time, it should be either completely automatic, or at most a simple phone call. I assume this doesn't happen, either because it's a CYA maneuver by the physician, or because the physician wants to bill for the appointment.