Assay of corticosterone at Northwestern Medicine Central DuPage Hospital

25 N. Winfield Rd. Winfield, IL 60190, IL · Nm · · NPI 1003864810

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

$329.70

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.

Full explanation →

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

$471.00

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.

$32.50 with HEALTH ALLIANCE MEDICAID [1310] vs $471.00 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
HEALTH ALLIANCE MEDICAID [1310] CDH ILLINOIS MEDICAID $32.50 ↓ -90%
BLUE CROSS MEDICAID [1612] CDH ILLINOIS MEDICAID $32.50 ↓ -90%
COUNTYCARE IL COOK CO [1607] CDH ILLINOIS MEDICAID $32.50 ↓ -90%
BLUE CROSS BLUE SHIELD [1401] CDH BCBS BLUECHOICE OPTIONS $52.28 ↓ -84%
ALTERNATE BLUE CROSS [1402] CDH BCBS BLUECHOICE PREFERRED $52.28 ↓ -84%
ALTERNATE BLUE CROSS [1402] CDH BCBS BLUECHOICE SELECT $52.28 ↓ -84%
BLUE CROSS BLUE SHIELD [1401] CDH BCBS BLUECHOICE SELECT $52.28 ↓ -84%
BLUE CROSS BLUE SHIELD [1401] CDH BCBS BLUECHOICE PREFERRED $52.28 ↓ -84%
ALTERNATE BLUE CROSS [1402] CDH BCBS BLUECHOICE OPTIONS $52.28 ↓ -84%
AETNA HEALTH PLAN [171] CDH AETNA NM EMPLOYEES $67.35 ↓ -80%
BLUE CROSS BLUE SHIELD [1401] CDH BCBS PPO $82.90 ↓ -75%
ALTERNATE BLUE CROSS [1402] CDH BCBS PPO $82.90 ↓ -75%
AETNA HEALTH PLAN [171] CDH AETNA BP $141.30 ↓ -57%
AETNA HEALTH PLAN [171] CDH AETNA APCN/SP $147.89 ↓ -55%
AETNA HEALTH PLAN [171] CDH AETNA IL PREFERRED $164.85 ↓ -50%
BLUE CROSS BLUE SHIELD [1401] CDH BCBS HMO $193.49 ↓ -41%
ALTERNATE BLUE CROSS [1402] CDH BCBS HMO $193.49 ↓ -41%
HEALTH'S FINEST NETWORK [126] CDH HFN NMH TIER ONE $235.50 ↓ -29%
CARELON BEHAVIORAL HEALTH [159] CDH VALUE OPTIONS BHS $235.50 ↓ -29%
MULTIPLAN/PHCS [142] CDH SAGAMORE HEALTH PPO $270.35 ↓ -18%
MAGELLAN BEHAVIORAL HLTH [136] CDH MAGELLAN BHS $282.60 ↓ -14%
BLUE CROSS BLUE SHIELD [1401] CDH ADVOCATE IPA $282.60 ↓ -14%
DREYER MED IPA ADVOCATE [1409] CDH ADVOCATE IPA $282.60 ↓ -14%
HUMANA HEALTH PLAN [130] CDH ADVOCATE IPA $282.60 ↓ -14%
HEALTHLINK [125] CDH SEIU HEALTHLINK $296.73 ↓ -10%
CHOICECARE [177] CDH CHOICE CARE $360.79 ↑ +9%
FIRST HEALTH PLAN [6034] CDH FIRST HEALTH $362.20 ↑ +10%
COMPSYCH [112] CDH COMPSYCH $376.80 ↑ +14%
CIGNA HEALTH PLAN [178] CDH CIGNA BEHAVIORAL BHS $376.80 ↑ +14%
MULTIPLAN/PHCS [142] CDH PHCS/MULTIPLAN $409.77 ↑ +24%
HEALTH'S FINEST NETWORK [126] CDH HFN $429.55 ↑ +30%
BLUE CROSS BLUE SHIELD [1401] CDH HEALTHLAB CHS $471.00 ↑ +43%
BLUE CROSS BLUE SHIELD [1401] CDH BCBS PAR/INDEMNITY ADP $471.00 ↑ +43%
HUMANA BEHAVIORAL [185] CDH LIFESYNCH BHS $471.00 ↑ +43%
UNITED HEALTHCARE [158] CDH UHC NON-CONTRACTED OON - ED ONLY $471.00 ↑ +43%
MULTIPLAN/PHCS [142] CDH NON-CONTRACTED PAYORS $471.00 ↑ +43%
BLUE CROSS BLUE SHIELD [1401] CDH HEALTHLAB EHP IPA $471.00 ↑ +43%
ALTERNATE BLUE CROSS MEDICARE ADV [2304] CDH MEDICARE not published by hospital
JOURNEYCARE INC HOSPICE [1275] CDH JOURNEYCARE HOSPICE not published by hospital
ALTERNATE HUMANA MEDICARE ADV [2409] CDH HUMANA MEDICARE ADVT not published by hospital
BLUE CROSS BLUE SHIELD [1401] CDH HEALTHLAB LITTLE COMPANY OF MARY not published by hospital
GLOBAL EXCEL [1712] CDH MEDICARE not published by hospital
BCBS MEDICARE ADVANTAGE [1304] CDH BLUE CROSS MMAI (MEDICARE) not published by hospital
OPTUM/UNITED BEHAVIORAL HEALTH [157] CDH UBH BHS not published by hospital
BLUE CROSS BLUE SHIELD [1401] CDH HEALTHLAB BLUE CROSS CHOICE not published by hospital

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Assay of corticosterone at other Illinois hospitals

Hospital City Cash price Negotiated range
UnityPoint Health - Trinity Moline Rock Island $56.80 $3.50 – $36.03
OSF Holy Family Medical Center Monmouth $296.00 not published
OSF Sacred Heart Medical Center – Urbana Danville $219.60 $22.52 – $22.97
Northwestern Medicine Delnor Hospital Geneva $329.70 not published
Northwestern Lake Forest Hospital DBA Northwestern Medicine Catherine Gratz Griffin Lake Forest Hospital Lake Forest $47.60 not published
HSHS St. John's Hospital IL 62769|301 N. 8th St. $217.44 $9.27 – $302.00
MercyOne Genesis Silvis Medical Center Silvis not published $10.76 – $10.76
MercyOne Genesis Aledo Medical Center Aledo not published $22.52 – $29.14

All Illinois hospitals for this procedure →