Chromogenic substrate assay at St. Luke's Health Memorial San Augustine

511 E. Hospital Street, San Augustine, TX · CommonSpirit Health · · NPI 1578547345

Source: hospital's published price file ↗ · Published Feb 28, 2026 · Ingested Sep 10, 2026

$43.20

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.

$288.00

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.

$9.99 with TCHP vs $259.20 with Galaxy — 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
TCHP Medicaid|All Plans $9.99 ↓ -77%
AETNA Medicare|All Plans $11.89 ↓ -72%
HUMANA Medicare|All Plans $11.89 ↓ -72%
Wellpoint Medicare|All Plans $12.25 ↓ -72%
CIGNA HEALTHSPRING Medicare|All Other Plans $12.48 ↓ -71%
UNITED Medicare|All Plans $12.48 ↓ -71%
BCBS Medicare|All Plans $12.48 ↓ -71%
CIGNA HEALTHSPRING Medicare|PPO $12.60 ↓ -71%
SCANHealth Medicare|All Plans $12.72 ↓ -71%
MD Save Commercial|All Plans $14.86 ↓ -66%
Wellpoint Medicaid|All Other Plans $16.29 ↓ -62%
UNITED Medicaid|All Other Plans $16.29 ↓ -62%
UNITED Medicaid|CHIP $16.29 ↓ -62%
UNITED Medicaid|STAR $16.29 ↓ -62%
UNITED Medicaid|STARKIDS $16.29 ↓ -62%
SUPERIOR Medicaid|STARPLUS $16.29 ↓ -62%
SUPERIOR Medicaid|All Other Plans $16.29 ↓ -62%
CIGNA HEALTHSPRING Medicaid|STARPLUS $16.62 ↓ -62%
Wellpoint Medicaid|STARPLUS $16.78 ↓ -61%
BCBS Medicaid|All Plans $17.10 ↓ -60%
Wellpoint Commercial|Exchange $18.72 ↓ -57%
BCBS-TX Commercial|Blue Advantage HMO $22.59 ↓ -48%
Wellpoint Medicaid|STAR $25.58 ↓ -41%
SUPERIOR Medicaid|STAR $25.58 ↓ -41%
UNITED Medicaid|STARPLUS $29.16 ↓ -33%
Entrust Commercial|All Plans $30.91 ↓ -28%
Angelina County Commercial|All Plans $32.46 ↓ -25%
Brookshire Brothers Commercial|All Plans $35.67 ↓ -17%
BCBS-TX Commercial|Blue Premier $39.24 ↓ -9%
BCBS-TX Commercial|HMO $41.62 ↓ -4%
BCBS-TX Commercial|PPO $48.04 ↑ +11%
Cigna Commercial|All Plans $50.86 ↑ +18%
United Commercial|Exchange $51.84 ↑ +20%
United Commercial|All Other Plans $66.24 ↑ +53%
Aetna Commercial|All Plans $72.00 ↑ +67%
PHCS Commercial|All Plans $195.84 ↑ +353%
Multiplan Commercial|All Plans $201.60 ↑ +367%
Humana Commercial|All Plans $201.60 ↑ +367%
Galaxy Commercial|All Plans $259.20 ↑ +500%

Visitor-reported prices

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Chromogenic substrate assay at other Texas hospitals

Hospital City Cash price Negotiated range
BAYLOR UNIVERSITY MEDICAL CENTER Dallas $714.03 $9.99 – $174.38
BAYLOR SCOTT & WHITE MEDICAL CENTER - BRENHAM Brenham $532.80 $12.00 – $227.55
BAYLOR SCOTT & WHITE MEDICAL CENTER - BUDA Suite 110 $532.80 $9.99 – $189.62
BAYLOR SCOTT & WHITE MEDICAL CENTER - CENTENNIAL Frisco $714.03 $9.99 – $174.38
BAYLOR SCOTT & WHITE MEDICAL CENTER - COLLEGE STATION College Station $532.80 $10.69 – $227.55
BAYLOR SCOTT & WHITE CONTINUING CARE HOSPITAL Temple $532.80 $8.00 – $227.55
BAYLOR SCOTT & WHITE EMERGENCY MEDICAL CENTER - CEDAR PARK Cedar Park $532.80 $9.99 – $227.55
BAYLOR SCOTT & WHITE ALL SAINTS MEDICAL CENTER - FORT WORTH Fort Worth $714.03 $9.99 – $174.38

All Texas hospitals for this procedure →