Cell function assay w/stim 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

$641.90

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.

$917.00

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.

$89.75 with AETNA HEALTH PLAN [171] vs $465.00 with MULTIPLAN/PHCS [142] — 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 $89.75 ↓ -86%
MERCY CARE HEALTH PLANS [5013] NWR MERCY CARE $141.13 ↓ -78%
ALTERNATE BLUE CROSS [1402] NWR BCBS PPO $157.64 ↓ -75%
BLUE CROSS BLUE SHIELD [1401] NWR BCBS PPO $157.64 ↓ -75%
AETNA HEALTH PLAN [171] NWR AETNA APCN/SP $159.96 ↓ -75%
AETNA HEALTH PLAN [171] NWR AETNA IL PREFERRED $165.08 ↓ -74%
ALTERNATE BLUE CROSS [1402] NWR BCBS HMO $165.91 ↓ -74%
BLUE CROSS BLUE SHIELD [1401] NWR BCBS HMO $165.91 ↓ -74%
BLUE CROSS BLUE SHIELD [1401] NWR BCBS BLUECHOICE OPTIONS $222.27 ↓ -65%
BLUE CROSS BLUE SHIELD [1401] NWR BCBS BLUECHOICE PREFERRED $222.27 ↓ -65%
BLUE CROSS BLUE SHIELD [1401] NWR BCBS BLUECHOICE SELECT $222.27 ↓ -65%
HEALTHLINK [125] NWR SEIU HEALTHLINK $232.50 ↓ -64%
AETNA HEALTH PLAN [171] NWR AETNA ASA $244.13 ↓ -62%
CHOICECARE [177] NWR CHOICE CARE $247.38 ↓ -61%
MULTIPLAN/PHCS [142] NWR PHCS PPO $292.95 ↓ -54%
HEALTH'S FINEST NETWORK [126] NWR HFN PLATINUM EPO $325.50 ↓ -49%
HEALTH'S FINEST NETWORK [126] NWR HFN PPO $339.45 ↓ -47%
CIGNA HEALTH PLAN [178] NWR CIGNA BEHAVORIAL BHS $348.75 ↓ -46%
BEECHSTREET [176] NWR BEECHSTREET $372.00 ↓ -42%
BLUE CROSS BLUE SHIELD [1401] NWR BCBS PAR/INDEMNITY ADP $465.00 ↓ -28%
MULTIPLAN/PHCS [142] NWR NON-CONTRACTED PAYORS $465.00 ↓ -28%
ALTERNATE HUMANA MEDICARE ADV [2409] NWR HUMANA MEDICARE ADVT not published by hospital
GLOBAL EXCEL [1712] NWR MEDICARE not published by hospital
ALTERNATE BLUE CROSS MEDICARE ADV [2304] NWR BLUE CROSS MEDICARE ADVT not published by hospital

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Cell function assay w/stim at other Illinois hospitals

Hospital City Cash price Negotiated range
Uchicago Medicine Adventhealth Hinsdale Hinsdale $75.00 $116.76 – $220.09
Advocate Christ Medical Center Oak Lawn $545.00 $135.86 – $648.00
Northwestern Memorial Hospital Chicago $690.20 not published
Advocate Condell Medical Center Libertyville $545.00 $135.86 – $648.00
Advocate Good Samaritan Hospital Downers Grove $545.00 $135.86 – $617.57
UnityPoint Health - Trinity Moline Rock Island $335.20 $3.50 – $217.38
Uchicago Medicine Adventhealth La Grange La Grange $75.00 $116.76 – $220.09
SSM Health Good Samaritan Hospital - Mt. Vernon Mount Vernon $672.10 $135.86 – $142.65

All Illinois hospitals for this procedure →