CMS Price Transparency Data

Hospital observation (per hour)

Facility: Sonoma Valley Hospital

Billing Code: G0378 (HCPCS)

The BaseRate · fair price low confidence

A fair price for this

$105

modeled fair price · typically $40–$431

modeled estimate · not a bill or quote

Fair price $105 Cash price $129

How we calculate the fair BaseRate →

Insurer prices not shown for this procedure

This hospital’s published rates for this billing code don’t look like a per-visit price — they appear to be a full-stay total filed under an hourly code — so we’re not showing a per-insurer breakdown we can’t stand behind. The fair price above is your best reference; call the hospital’s billing office to confirm the actual charge.

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 129), 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 Sonoma Valley 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 (%)

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Other Procedures at Sonoma Valley Hospital

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

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