I can confirm at least two of those things

I'm here

Theres a queue

My number is 77

Nevermind she called my name

She gave me a character sheet to mark if I had any of like 30 different health conditions

I have none

So I ascended to Level 2 and now I'm on the second floor of the medical dungeon

I'm holding a card that says CLINICAL EXAM

This is literally a dungeon

There are like irregular walls with 10 different doors

All alike

Sorrounding the 2nd floor waiting room

Sometimes, a grey door open, and a woman clad in white calls someone's name

A woman just called ALLAN KARDEC

A chubby guy with sunglasses and a hat went in

I truly am in the purgatory

This is what will happen to the PCs when they die in my next campaign

They wake up in an ethereal medical clinic

(just a fun story of me in the Purgatory Clinic)