Ghs polysom <6 yrs 4/> parameters at Advocate Illinois Masonic Medical Center

836 West Wellington Avenue, Chicago, IL · Advocate Health · · NPI 1912014564

Source: hospital's published price file ↗ · Published Nov 4, 2025 · Ingested Aug 13, 2026

$3,235.00

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.

$6,470.00

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.

$1,537.79 with Molina vs $5,550.02 with Blue Cross Blue Shield — 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
Molina Medicare Advantage $1,537.79 ↓ -52%
Ambetter Medicare Advantage $1,537.79 ↓ -52%
Oscar Health HMO Medicare Advantage $1,590.82 ↓ -51%
Advocate Employee Commercial $1,658.74 ↓ -49%
HSTechnology Medicare Advantage $2,036.25 ↓ -37%
Cigna One Health Commercial $2,189.20 ↓ -32%
Aetna Commercial $2,271.30 ↓ -30%
Private Healthcare Systems Commercial $2,273.40 ↓ -30%
United Healthcare Charter Commercial $2,449.00 ↓ -24%
Cigna Commercial $2,778.60 ↓ -14%
United Healthcare Nexus Commercial $2,837.00 ↓ -12%
Blue Cross Blue Shield Blue Precision Managed Care $3,368.00 ↑ +4%
Multiplan Commercial $3,368.00 ↑ +4%
Blue Cross Blue Shield HMO $3,426.94 ↑ +6%
United Healthcare Core Navigate Commercial $4,182.00 ↑ +29%
United Healthcare HMO $4,841.00 ↑ +50%
Blue Cross Blue Shield City of Chicago Commercial $4,876.69 ↑ +51%
Blue Cross Blue Shield Choice Commercial $5,271.12 ↑ +63%
Blue Cross Blue Shield PPO $5,550.02 ↑ +72%

Visitor-reported prices

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Ghs polysom <6 yrs 4/> parameters at other Illinois hospitals

Hospital City Cash price Negotiated range
Ascension Saint Joseph - Chicago (Presence Chicago Hospital Network) Chicago $1,419.33 $1,935.45 – $2,862.12
Advocate Trinity Hospital Chicago not published $1,537.79 – $5,514.16
MercyOne Genesis Silvis Medical Center Silvis $3,161.40 $385.48 – $2,912.39
MercyOne Genesis Aledo Medical Center Aledo $3,161.40 $1,145.61 – $2,476.43
Uchicago Medicine Adventhealth Hinsdale Hinsdale $1,700.00 $900.92 – $1,490.79
Advocate Christ Medical Center Oak Lawn $3,235.00 $1,537.79 – $5,115.74
Advocate Good Samaritan Hospital Downers Grove $3,235.00 $1,537.79 – $5,239.25
UnityPoint Health - Trinity Moline Rock Island $3,263.57 $112.90 – $1,799.04

All Illinois hospitals for this procedure →