Insurance carriers like low risk and thrive on people not fighting adverse decisions either because of a lack of time and resources or knowledge.
The variables matter. My insurance carrier has also never denied a claim, but I’m in more or less good health for my age, have an HSA (at a bank owned by the insurance company) with a significant annual contribution from the issuing employer, and I don’t have anything going on (at the time I write this) that would end up in medical review. And if I did have to deal with that, theres financial cushion available to me to rely on while I fight it out with insurance.
There's also https://en.wikipedia.org/wiki/Centene_Corporation
You mentioned Kaiser Permanente who acquired Geisinger Health System's network of hospitals: https://en.wikipedia.org/wiki/Kaiser_Permanente
See also: https://pahealthaccess.org/promises-made-promises-broken-wha...
https://www.kff.org/health-costs/issue-brief/ten-things-to-k...
The partnership of Kaiser and Reagan are largely responsible for the healthcare system America has today.
Do not give them a pass.
I’m a physician that works at an ultra specialized hospital.
Even if that were true that KP deny the least, it ends up meaning nothing if they also own the hospital who they graciously never deny claims from.
Ugh.
UHG denies.
KP delays.
Both can lead to disastrous consequences.
Edit: And by delay, I don’t mean delay in seeing a specialist, I mean delay getting the most modern and up-to-date care. They have a tendency to practice population based treatment (and fiscally responsible), which may not be what is the most up to date. I understand it as an hospital administrator, but I can see the consequences as a physician.