Immunoglobulin assay at St. Joseph's Medical Center Stockton

1800 N California St, Stockton, CA · CommonSpirit Health · · NPI 1528190931

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

$7.45

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.

$25.33

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.

$5.32 with Kaiser vs $73.00 with Cigna — 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
Kaiser Commercial|Affiliated Payers $5.32 ↓ -29%
Kaiser Commercial|All Other Plans $5.32 ↓ -29%
Medcore Commercial|Without ER $10.59 ↑ +42%
Medcore Commercial|With ER $10.59 ↑ +42%
Alignment Health Medicare|All Plans $11.21 ↑ +50%
Sutter UMR Commercial|All Plans $11.40 ↑ +53%
Humana Medicare|All Plans $12.46 ↑ +67%
Aetna Medicare|All Plans $12.46 ↑ +67%
Molina Medicare|All Plans $12.46 ↑ +67%
United Medicare|All Plans $12.46 ↑ +67%
Cigna Medicare|All Plans $12.46 ↑ +67%
Kaiser Medicare|All Plans $12.46 ↑ +67%
BCBS - Anthem Medicare|All Plans $12.46 ↑ +67%
Blue Shield CA Medicare|All Plans $12.46 ↑ +67%
Scan Health Plan Medicare|All Plans $12.46 ↑ +67%
Hill Physicians Commercial|All Plans $12.46 ↑ +67%
United Commercial|Non-Options PPO $14.95 ↑ +101%
United Commercial|All Other Plans $14.95 ↑ +101%
United Commercial|HMO $14.95 ↑ +101%
United Commercial|Options PPO $14.95 ↑ +101%
Healthsmart Commercial|All Plans $15.20 ↑ +104%
Kaiser Medicaid|> 21 $15.88 ↑ +113%
Kaiser Medicaid|< 21 $15.88 ↑ +113%
HPSJ Medicaid|> 21 $15.88 ↑ +113%
BCBS - Anthem Medicaid|< 21 $15.88 ↑ +113%
BCBS - Anthem Medicaid|> 21 $15.88 ↑ +113%
Health Plan of San Joaquin Medicaid|All Plans $15.88 ↑ +113%
Blue Shield CA Commercial|Exchange $15.96 ↑ +114%
BCBS - Anthem Commercial|Exchange $16.72 ↑ +124%
First Health Commercial|All Plans $18.24 ↑ +145%
Blue Shield CA Commercial|All Other Plans $19.76 ↑ +165%
MultiPlan Commercial|All Plans $20.78 ↑ +179%
BCBS - Anthem Commercial|Non-MCS $22.80 ↑ +206%
Aetna Commercial|All Other Plans $25.33 ↑ +240%
Health Net Medicaid|All Plans $25.33 ↑ +240%
BCBS - Anthem Commercial|MCS $25.33 ↑ +240%
Aetna Commercial|PPO $25.33 ↑ +240%
Aetna Commercial|HMO $25.33 ↑ +240%
Cigna Commercial|All Other Plans $73.00 ↑ +880%
Cigna Commercial|PPO $73.00 ↑ +880%

Visitor-reported prices

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Immunoglobulin assay at other California hospitals

Hospital City Cash price Negotiated range
St. Joseph's Behavioral Health Center Stockton $14.47 $2.54 – $20.27
St. John's Camarillo Hospital Camarillo $207.62 $6.84 – $33.06
Banner Lassen Medical Center Susanville $118.48 $2.49 – $180.42
Petaluma Valley Hospital Petaluma $94.35 $12.21 – $87.66
Arroyo Grande Hospital Santa Maria $10.85 $12.46 – $32.11
French Hospital San Luis Obispo $9.93 $6.84 – $37.75
Mercy Hospitals – Bakersfield Bakersfield $9.40 $12.46 – $35.81
Bakersfield Memorial Hospital Bakersfield $9.30 $12.46 – $35.81

All California hospitals for this procedure →