Participating private hospitals typically only allow a certain amount of new registrants per year and are snapped up quickly.
Iam registered at Phayathai Sriracha, they allow 100 per year.
I stayed in a Deluxe VIP room (4 weeks).
SS paid 700.
I opted for no food (hospital food is rank.... if my missus could no cook and bring food for whatever reason I would order through Grab and a nurse would collect for me).
Total 4400 per day.
Of that my private insurance paid 3000
EDIT to add:... SS covered all expenses for my stay in ICU (8 weeks) inc two surgeries.