CMS Price Transparency Data

Hospital observation (per hour)

Facility: St. Mary's Hospital

Billing Code: G0378 (HCPCS)

The BaseRate · fair price low confidence

A fair price for this

$89

modeled fair price · typically $25–$626

modeled estimate · not a bill or quote

Fair price $89 Cash price $246 Hospital's list price $328

How we calculate the fair BaseRate →

What each insurance company pays

Which insurers have negotiated a price with this hospital for this procedure — and which haven’t.

1 of 6 major insurers have a published price at this hospital

✓ UnitedHealthcare Blue Cross Blue ShieldAetnaCignaHumanaKaiser Permanente

Crossed out = this hospital hasn’t published a negotiated price for that insurer for this procedure. It doesn’t necessarily mean they aren’t accepted — ask your insurer.

Insurance company	Price range	vs. Medicare
UnitedHealthcaremajor	$1	—
Molina	$1	—

Self-Pay How to get the cash price

Tell the billing desk you want to be billed as self-pay — not through insurance — before your visit.
Ask for the cash / prompt-pay discount in writing, with the exact price (about 246), before you agree to anything.
Get it in writing that they won’t also bill your insurance, so the cash price is what you owe.
Check the HCPCS code on your bill matches exactly: G0378.

Insurance Before you use insurance

Call your insurance company to confirm St. Mary's Hospital is in-network.
Ask your insurer whether prior approval is required for HCPCS code G0378.
Confirm the doctor or provider is in-network too — not just the hospital building.
Check your Explanation of Benefits against the hospital’s final itemized bill.

Estimate your out-of-pocket cost

A rough estimate of what you’d pay with insurance (deductible + coinsurance) versus paying the cash price yourself.

How you’d pay

Deductible left to meet ($)

Your coinsurance (%)

Enter your details and press estimate to compare.

Other Procedures at St. Mary's Hospital

Compare: Hospital observation (per hour) at other AZ hospitals

Insurance negotiated median for the same procedure, sorted lowest first.