CMS Price Transparency Data

Diagnostic mammogram (both breasts)

Facility: Ascension Saint Thomas Hospital

Billing Code: 77066 (CPT)

The BaseRate · fair price high confidence

A fair price for this

$121

about 0.8× the $157 Medicare rate · typically $109–$159

modeled estimate · not a bill or quote

What this hospital charges insurers

$126

About the fair price

about $5 over the fair price · 0.8× Medicare

Medicare pays $157 Fair price $121 This hospital $126 Cash price $208 Hospital's list price $694

How we calculate the fair BaseRate →

How this hospital compares to other TN hospitals

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

Cheapest $44 Priciest $126

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

A fair price for a Diagnostic mammogram (both breasts) is about $121 (about 0.8× the $157 Medicare rate). Ascension Saint Thomas Hospital charges insurers about $126, or about $208 in cash — about the fair price. Located in Nashville, TN.

What each insurance company pays

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

5 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	$97 - $193	62%
Blue Cross Blue Shieldmajor	$89 - $231	57%
Aetnamajor	$99 - $232	63%
Cignamajor	$138 - $319	88%
Humanamajor	$97 - $201	62%
Ambetter (Centene)	$126	80%
Amerigroup	$90 - $100	57%
Cigna HealthSpring	$97	62%
Oscar Health	$136	87%
+ 8 smaller / regional plans	$87 - $136

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

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 208), 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: 77066.

Insurance Before you use insurance

Call your insurance company to confirm Ascension Saint Thomas Hospital is in-network.
Ask your insurer whether prior approval is required for CPT code 77066.
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 Ascension Saint Thomas Hospital

Compare: Diagnostic mammogram (both breasts) at other TN hospitals

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