Biliary endoscopy thru skin at SSM Health St. Mary's Hospital - Centralia

400 North Pleasant Avenue, Centralia, IL · SSM Health · · NPI 1083617245

Source: hospital's published price file ↗ · Published Apr 1, 2026 · Ingested Sep 10, 2026

not published by hospital

Cash price

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Discounted cash price

What a hospital charges a self-pay patient who pays directly, without going through insurance — usually well below the gross charge.

Example: A CT scan has a $3,200 gross charge but an $850 discounted cash price. Ask for it by name when scheduling — hospitals don't always advertise it up front.

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What you pay up front if you don't use insurance.

not published by hospital

Gross charge

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Gross charge (chargemaster price)

The hospital's full, undiscounted list price — pulled from its internal "chargemaster" price list. Almost no one actually pays this.

Example: A chest X-ray has a gross charge of $1,450. The same hospital's discounted cash price for the same X-ray is $180 — the gross charge mostly anchors negotiations, not what patients pay.

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The hospital's undiscounted list price — almost no one pays this.

$11,391.13 with Molina vs $11,960.68 with Essence Healthcare — same scan, same building. Share

Negotiated rates by payer
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Negotiated rate

The price a specific insurance plan agreed to pay the hospital for a service — it varies by insurer, and even by plan within the same insurer.

Example: The same knee MRI has a negotiated rate of $904 with one insurer's PPO plan and $1,509 with another's — identical hospital, identical scan.

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Payer
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Payer

The insurance company footing the bill — Aetna, UnitedHealthcare, Medicare, and so on.

Example: "Blue Cross Blue Shield" is the payer. Its negotiated rate for an MRI might be $904, while a different payer's negotiated rate for the same scan is $1,509.

Full explanation →
Plan
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Plan

The specific product an insurer sells — e.g. "Blue Cross PPO 500" — which sets your deductible, coinsurance and negotiated rates.

Example: Two people both insured by Aetna can owe very different amounts for the same MRI: $50 with an HMO plan's flat copay, or the full $1,200 toward a high-deductible PPO plan's unmet deductible.

Full explanation →
Negotiated rate vs. cash
Molina Dual Eligible Medicare/Medicaid $11,391.13
UnitedHealthCare Medicare Managed Care Plan $11,846.77
Essence Healthcare Medicare Managed Care Plan $11,960.68

Visitor-reported prices

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Biliary endoscopy thru skin at other Illinois hospitals

Hospital City Cash price Negotiated range
Advocate Christ Medical Center Oak Lawn $2,445.00 $1,926.66 – $25,111.00
UnityPoint Health - Trinity Moline Rock Island $960.00 $336.53 – $8,099.52
Advocate Childrens Hospital - Park Ridge Park Ridge $2,445.00 $1,926.66 – $25,111.00
Advocate Sherman Hospital Elgin $4,545.00 $3,372.39 – $20,837.50
Advocate Trinity Hospital Chicago $4,425.00 $3,486.90 – $25,111.00
MercyOne Genesis Silvis Medical Center Silvis not published $4,431.26 – $16,279.30
MercyOne Genesis Aledo Medical Center Aledo not published $1,218.00 – $12,000.99
Uchicago Medicine Adventhealth Hinsdale Hinsdale not published $1,728.00 – $18,453.63

All Illinois hospitals for this procedure →