Potassium chloride 10 meq/100ml in sterile water intravenous piggyback 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

$110.07

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.

$157.25

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.

$1.06 with AETNA HEALTH PLAN [171] vs $5.50 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 $1.06 ↓ -99%
MERCY CARE HEALTH PLANS [5013] NWR MERCY CARE $1.67 ↓ -98%
ALTERNATE BLUE CROSS [1402] NWR BCBS PPO $1.86 ↓ -98%
BLUE CROSS BLUE SHIELD [1401] NWR BCBS PPO $1.86 ↓ -98%
AETNA HEALTH PLAN [171] NWR AETNA APCN/SP $1.89 ↓ -98%
AETNA HEALTH PLAN [171] NWR AETNA IL PREFERRED $1.95 ↓ -98%
ALTERNATE BLUE CROSS [1402] NWR BCBS HMO $1.96 ↓ -98%
BLUE CROSS BLUE SHIELD [1401] NWR BCBS HMO $1.96 ↓ -98%
BLUE CROSS BLUE SHIELD [1401] NWR BCBS BLUECHOICE OPTIONS $2.63 ↓ -98%
BLUE CROSS BLUE SHIELD [1401] NWR BCBS BLUECHOICE PREFERRED $2.63 ↓ -98%
BLUE CROSS BLUE SHIELD [1401] NWR BCBS BLUECHOICE SELECT $2.63 ↓ -98%
HEALTHLINK [125] NWR SEIU HEALTHLINK $2.75 ↓ -98%
AETNA HEALTH PLAN [171] NWR AETNA ASA $2.89 ↓ -97%
CHOICECARE [177] NWR CHOICE CARE $2.93 ↓ -97%
MULTIPLAN/PHCS [142] NWR PHCS PPO $3.47 ↓ -97%
HEALTH'S FINEST NETWORK [126] NWR HFN PLATINUM EPO $3.85 ↓ -97%
HEALTH'S FINEST NETWORK [126] NWR HFN PPO $4.02 ↓ -96%
CIGNA HEALTH PLAN [178] NWR CIGNA BEHAVORIAL BHS $4.13 ↓ -96%
BEECHSTREET [176] NWR BEECHSTREET $4.40 ↓ -96%
BLUE CROSS BLUE SHIELD [1401] NWR BCBS PAR/INDEMNITY ADP $5.50 ↓ -95%
MULTIPLAN/PHCS [142] NWR NON-CONTRACTED PAYORS $5.50 ↓ -95%
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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Potassium chloride 10 meq/100ml in sterile water intravenous piggyback at other Illinois hospitals

Hospital City Cash price Negotiated range
MercyOne Genesis Silvis Medical Center Silvis $38.73 $8.79 – $23.89
MercyOne Genesis Aledo Medical Center Aledo $38.73 $0.05 – $12.91
Uchicago Medicine Adventhealth Hinsdale Hinsdale $115.80 $0.22 – $0.22
Advocate Christ Medical Center Oak Lawn $9.97 $0.18 – $5.87
Northwestern Memorial Hospital Chicago $412.12 not published
Advocate Condell Medical Center Libertyville $7.15 $0.22 – $10.70
Advocate Good Samaritan Hospital Downers Grove $6.75 $0.18 – $5.88
UnityPoint Health - Trinity Moline Rock Island $48.00 $0.11 – $1.48

All Illinois hospitals for this procedure →