Emb without cervical dilation 58100 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

$259.60

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.

$472.00

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.

Full explanation →

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

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.

Full explanation →

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

Visitor-reported prices

visitor-reported
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Emb without cervical dilation 58100 at other Illinois hospitals

Hospital City Cash price Negotiated range
MercyOne Genesis Silvis Medical Center Silvis $213.00 $326.60 – $514.60
MercyOne Genesis Aledo Medical Center Aledo $213.00 $1,393.67 – $2,970.16
Advocate Christ Medical Center Oak Lawn $302.50 $238.37 – $6,291.00
Advocate Condell Medical Center Libertyville $1,290.00 $304.07 – $4,528.00
UnityPoint Health - Trinity Moline Rock Island $994.27 $56.27 – $548.09
SSM Health Good Samaritan Hospital - Mt. Vernon Mount Vernon $259.60 $216.65 – $227.48
Advocate Illinois Masonic Medical Center Chicago $297.50 $234.43 – $6,291.00
Advocate Childrens Hospital - Park Ridge Park Ridge $432.50 $304.07 – $6,291.00

All Illinois hospitals for this procedure →