Blood gases o2 saturation direct measurement at Advocate Christ Medical Center

4440 West 95th Street, Oak Lawn, IL · Advocate Health · · NPI 1548375082

Source: hospital's published price file ↗ · Published Nov 4, 2025 · Ingested Aug 12, 2026

$102.50

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.

Full explanation →

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

$205.00

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.

$78.77 with United Healthcare vs $358.64 with Cigna — 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.

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
United Healthcare HMO $78.77 ↓ -23%
United Healthcare Nexus Commercial $78.77 ↓ -23%
United Healthcare Core Navigate Commercial $78.77 ↓ -23%
United Healthcare Charter Commercial $78.77 ↓ -23%
Advocate Employee Commercial $80.77 ↓ -21%
Ambetter Medicare Advantage $114.22 ↑ +11%
Molina Medicare Advantage $114.22 ↑ +11%
Oscar Health HMO Medicare Advantage $118.16 ↑ +15%
Private Healthcare Systems Commercial $137.35 ↑ +34%
Blue Cross Blue Shield Blue Precision Managed Care $144.73 ↑ +41%
Blue Cross Blue Shield HMO $147.60 ↑ +44%
Blue Cross Blue Shield City of Chicago Commercial $149.31 ↑ +46%
HSTechnology Medicare Advantage $151.24 ↑ +48%
Aetna Commercial $153.48 ↑ +50%
Blue Cross Blue Shield Choice Commercial $161.37 ↑ +57%
Multiplan Commercial $164.00 ↑ +60%
Blue Cross Blue Shield PPO $169.92 ↑ +66%
Cigna One Health Commercial $358.64 ↑ +250%
Cigna Commercial $358.64 ↑ +250%

Visitor-reported prices

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Blood gases o2 saturation direct measurement at other Illinois hospitals

Hospital City Cash price Negotiated range
MercyOne Genesis Silvis Medical Center Silvis $138.00 $55.07 – $169.28
MercyOne Genesis Aledo Medical Center Aledo $138.00 $80.04 – $90.59
Uchicago Medicine Adventhealth Hinsdale Hinsdale $73.75 $31.90 – $127.61
Advocate Condell Medical Center Libertyville $165.00 $78.77 – $358.64
Advocate Good Samaritan Hospital Downers Grove $122.50 $78.77 – $358.64
UnityPoint Health - Trinity Moline Rock Island $291.41 $3.50 – $160.64
Uchicago Medicine Adventhealth La Grange La Grange $73.75 $30.65 – $127.61
SSM Health Good Samaritan Hospital - Mt. Vernon Mount Vernon $256.30 $78.77 – $82.71

All Illinois hospitals for this procedure →