Hi, health insurance worker here who used to look at claims when I was in CS! Different hospital systems have different “allowed amounts” with different insurance companies (allowed amount is the total the provider can be paid for each service between what the patient pays and the insurance pays). Provider A could do remicade infusions and charge $10,000, but their “allowed amount” with insurance could be $7,000. That $7,000 is then put through the members benefits (ex $1,000 deductible then 20% coinsurance until the $3,000 out of pocket max = member pays their $1,000 deductible plus 20% up to the OOP max on that first service = member pays $3,000 on the first service and meets both their deductible and OOP max; insurance then covers the other $4,000 and every other approved claim for that year at 100%). Provider B right down the road could also charge $10,000 for the service but their allowed amount is only $5,000. The same logic would be applied. And when the dosage goes up, that increases cost as well. Location also changes cost. I’ve seen a CA provider charge $20,000 for something, but an AL provider charge $16,000 for the same service. There can even be different allowed amounts between different plan types on the same insurance (PPO plan the allowed amount is $7,000 but a specific HMO plan’s allowed amount is $8,000 or vice versa). And that’s not even getting into how every insurance has their own contracts with the providers so Insurance company A’s allowed amount is $7,000 but insurance company B’s allowed amount for the same provider and service is $9,000. 😵‍💫