CMS Price Transparency Data

MRI, lower back (no contrast)

Facility: John Muir Medical Center - Walnut Creek Campus

Billing Code: 72148 (CPT)

The BaseRate · fair price high confidence

A fair price for this

$344

about 1.4× the $244 Medicare rate · typically $337–$829

modeled estimate · not a bill or quote

What this hospital charges insurers

$337

About the fair price

about $7 under the fair price · 1.4× Medicare

Medicare pays $244 Fair price $344 This hospital $337 Cash price $2,320 Hospital's list price $5,156

How we calculate the fair BaseRate →

How this hospital compares to other CA hospitals

Highest price of the 9 CA hospitals we have prices for — worth calling around.

Cheapest $60 Priciest $337

Black dot = this hospital, among the 9 CA hospitals with a price for this procedure. Full list below.

⚠ The cash price looks unusually high next to the insurance price — it may be the full list price, not a real cash discount. Call to confirm the self-pay rate.

A fair price for a MRI, lower back (no contrast) is about $344 (about 1.4× the $244 Medicare rate). John Muir Medical Center - Walnut Creek Campus charges insurers about $337, or about $2,320 in cash — about the fair price. Located in Walnut Creek, CA.

What each insurance company pays

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

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

✓ UnitedHealthcare✓ Blue Cross Blue Shield✓ Aetna✓ Cigna✓ Humana✓ Kaiser 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	$124 - $1,212	51%
Blue Cross Blue Shieldmajor	$337 - $3,351	138%
Aetnamajor	$179 - $337	73%
Cignamajor	$1,334	547%
Humanamajor	$337 - $4,279	138%
Kaiser Permanentemajor	$4,176	1713%
Health Net	$330 - $1,257	135%
+ 27 smaller / regional plans	$124 - $5,156

Government programs also on file: Medicare, Military & VA.

Excludes 11 rental-network / third-party entries (e.g. Multiplan, PHCS) — these are pricing networks, not insurers.

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 2,320), 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 CPT code on your bill matches exactly: 72148.

Insurance Before you use insurance

Call your insurance company to confirm John Muir Medical Center - Walnut Creek Campus is in-network.
Ask your insurer whether prior approval is required for CPT code 72148.
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 John Muir Medical Center - Walnut Creek Campus

Compare: MRI, lower back (no contrast) at other CA hospitals

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