Eeg monitoring/function test at Northwestern Medicine McHenry Hospital

4201 Medical Center Drive, McHenry, IL · Nm · · NPI 1427065499

Source: hospital's published price file ↗ · Published Apr 1, 2026 · Ingested Sep 17, 2026

$707.70

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.

$1,011.00

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.

$195.12 with AETNA HEALTH PLAN [171] vs $1,011.00 with BLUE CROSS BLUE SHIELD [1401] — 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
AETNA HEALTH PLAN [171] NWR AETNA NM EMPLOYEES $195.12 ↓ -72%
CIGNA HEALTH PLAN [178] NWR CIGNA ALTERNATIVE $199.17 ↓ -72%
MERCY CARE HEALTH PLANS [5013] NWR MERCY CARE $306.84 ↓ -57%
CIGNA HEALTH PLAN [178] NWR CIGNA BROAD $312.40 ↓ -56%
BLUE CROSS BLUE SHIELD [1401] NWR BCBS PPO $342.73 ↓ -52%
ALTERNATE BLUE CROSS [1402] NWR BCBS PPO $342.73 ↓ -52%
AETNA HEALTH PLAN [171] NWR AETNA APCN/SP $347.78 ↓ -51%
AETNA HEALTH PLAN [171] NWR AETNA IL PREFERRED $358.91 ↓ -49%
ALTERNATE BLUE CROSS [1402] NWR BCBS HMO $360.72 ↓ -49%
BLUE CROSS BLUE SHIELD [1401] NWR BCBS HMO $360.72 ↓ -49%
BLUE CROSS BLUE SHIELD [1401] NWR BCBS BLUECHOICE PREFERRED $483.26 ↓ -32%
BLUE CROSS BLUE SHIELD [1401] NWR BCBS BLUECHOICE OPTIONS $483.26 ↓ -32%
BLUE CROSS BLUE SHIELD [1401] NWR BCBS BLUECHOICE SELECT $483.26 ↓ -32%
AETNA HEALTH PLAN [171] NWR AETNA $492.36 ↓ -30%
HEALTHLINK [125] NWR SEIU HEALTHLINK $505.50 ↓ -29%
AETNA HEALTH PLAN [171] NWR AETNA ASA $530.78 ↓ -25%
CHOICECARE [177] NWR CHOICE CARE $537.85 ↓ -24%
MULTIPLAN/PHCS [142] NWR PHCS PPO $636.93 ↓ -10%
THE ALLIANCE [1703] NWR THE ALLIANCE $649.37 ↓ -8%
HEALTH'S FINEST NETWORK [126] NWR HFN PLATINUM EPO $707.70 ↑ +0%
HEALTH'S FINEST NETWORK [126] NWR HFN PPO $738.03 ↑ +4%
CIGNA HEALTH PLAN [178] NWR CIGNA BEHAVORIAL BHS $758.25 ↑ +7%
BEECHSTREET [176] NWR BEECHSTREET $808.80 ↑ +14%
MULTIPLAN/PHCS [142] NWR NON-CONTRACTED PAYORS $1,011.00 ↑ +43%
BLUE CROSS BLUE SHIELD [1401] NWR BCBS PAR/INDEMNITY ADP $1,011.00 ↑ +43%
GLOBAL EXCEL [1712] NWR MEDICARE not published by hospital
ALTERNATE HUMANA MEDICARE ADV [2409] NWR HUMANA MEDICARE ADVT not published by hospital
ALTERNATE BLUE CROSS MEDICARE ADV [2304] NWR BLUE CROSS MEDICARE ADVT not published by hospital

Visitor-reported prices

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Eeg monitoring/function test at other Illinois hospitals

Hospital City Cash price Negotiated range
Northwestern Memorial Hospital Chicago $707.70 not published
UnityPoint Health - Trinity Moline Rock Island $1,373.60 $203.60 – $934.65
Ascension Saint Joseph - Chicago (Presence Chicago Hospital Network) Chicago $513.48 $858.00 – $1,268.80
OSF Little Company of Mary Medical Center Evergreen Park $8,871.00 $920.24 – $1,711.65
OSF Saint Francis Medical Center Peoria $9,276.60 $349.98 – $3,128.47
Northwestern Medicine Central DuPage Hospital IL 60190 $707.70 not published
Northwestern Medicine Delnor Hospital Geneva $707.70 not published
Northwestern Medicine Palos Hospital Palos Heights $707.70 not published

All Illinois hospitals for this procedure →