Assay of interleukin-6 (il-6) at St. Mary Medical Center

1050 Linden Ave, Long Beach, CA · CommonSpirit Health · · NPI 1194840421

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

$27.95

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.

$65.00

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.

$4.67 with DHR vs $18.68 with SMIPA — 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
DHR Medicaid|< 21 $4.67 ↓ -83%
DHR Medicaid|> 21 $4.67 ↓ -83%
Blue Shield CA Commercial|Exchange $7.10 ↓ -75%
Blue Shield CA Commercial|All Other Plans $9.16 ↓ -67%
United Commercial|Non-Options PPO $10.84 ↓ -61%
United Commercial|Options PPO $11.59 ↓ -59%
United Commercial|All Other Plans $11.59 ↓ -59%
Blue Shield CA Medicare|BlueShield Promise $12.15 ↓ -57%
Kaiser Commercial|All Plans $13.08 ↓ -53%
MultiPlan Commercial|All Plans $14.95 ↓ -47%
United Commercial|HMO $17.94 ↓ -36%
SMIPA Medicare|All Plans $18.68 ↓ -33%

Visitor-reported prices

visitor-reported
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Assay of interleukin-6 (il-6) at other California hospitals

Hospital City Cash price Negotiated range
St. John's Camarillo Hospital Camarillo $28.47 $17.55 – $50.70
Banner Lassen Medical Center Susanville $36.93 $3.45 – $57.23
Petaluma Valley Hospital Petaluma $106.03 $16.92 – $37.98
Arroyo Grande Hospital Santa Maria $27.82 $9.34 – $18.31
Mark Twain Medical Center San Andreas $43.29 $4.81 – $18.19
French Hospital San Luis Obispo $25.48 $5.05 – $18.31
Mercy Hospitals – Bakersfield Bakersfield $24.12 $9.34 – $14.95
Bakersfield Memorial Hospital Bakersfield $23.86 $9.34 – $18.50

All California hospitals for this procedure →