C-peptide 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

$2.36

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.

$8.00

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.

$1.68 with Kaiser vs $121.93 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 $1.68 ↓ -29%
Kaiser Commercial|All Other Plans $1.68 ↓ -29%
Sutter UMR Commercial|All Plans $3.60 ↑ +53%
Healthsmart Commercial|All Plans $4.80 ↑ +103%
Blue Shield CA Commercial|Exchange $5.04 ↑ +114%
BCBS - Anthem Commercial|Exchange $5.28 ↑ +124%
First Health Commercial|All Plans $5.76 ↑ +144%
Blue Shield CA Commercial|All Other Plans $6.24 ↑ +164%
MultiPlan Commercial|All Plans $6.56 ↑ +178%
Medcore Commercial|Without ER $6.80 ↑ +188%
Medcore Commercial|With ER $6.80 ↑ +188%
BCBS - Anthem Commercial|Non-MCS $7.20 ↑ +205%
Alignment Health Medicare|All Plans $7.20 ↑ +205%
Kaiser Medicare|All Plans $8.00 ↑ +239%
Humana Medicare|All Plans $8.00 ↑ +239%
Kaiser Medicaid|> 21 $8.00 ↑ +239%
BCBS - Anthem Medicare|All Plans $8.00 ↑ +239%
BCBS - Anthem Commercial|MCS $8.00 ↑ +239%
BCBS - Anthem Medicaid|< 21 $8.00 ↑ +239%
BCBS - Anthem Medicaid|> 21 $8.00 ↑ +239%
Blue Shield CA Medicare|All Plans $8.00 ↑ +239%
Scan Health Plan Medicare|All Plans $8.00 ↑ +239%
Health Plan of San Joaquin Medicaid|All Plans $8.00 ↑ +239%
HPSJ Medicaid|> 21 $8.00 ↑ +239%
Hill Physicians Commercial|All Plans $8.00 ↑ +239%
Kaiser Medicaid|< 21 $8.00 ↑ +239%
Aetna Commercial|All Other Plans $8.00 ↑ +239%
Aetna Commercial|PPO $8.00 ↑ +239%
Aetna Medicare|All Plans $8.00 ↑ +239%
Aetna Commercial|HMO $8.00 ↑ +239%
Molina Medicare|All Plans $8.00 ↑ +239%
United Commercial|All Other Plans $8.00 ↑ +239%
United Medicare|All Plans $8.00 ↑ +239%
United Commercial|HMO $8.00 ↑ +239%
United Commercial|Options PPO $8.00 ↑ +239%
United Commercial|Non-Options PPO $8.00 ↑ +239%
Health Net Medicaid|All Plans $8.00 ↑ +239%
Cigna Medicare|All Plans $8.00 ↑ +239%
Cigna Commercial|PPO $121.93 ↑ +5067%
Cigna Commercial|All Other Plans $121.93 ↑ +5067%

Visitor-reported prices

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C-peptide at other California hospitals

Hospital City Cash price Negotiated range
Banner Lassen Medical Center Susanville $6.26 $4.10 – $29.42
Petaluma Valley Hospital Petaluma $32.26 $20.39 – $138.44
Arroyo Grande Hospital Santa Maria $33.17 $4.00 – $53.63
Mark Twain Medical Center San Andreas $49.95 $4.34 – $8.00
French Hospital San Luis Obispo $30.38 $2.16 – $63.05
Mercy Hospitals – Bakersfield Bakersfield $10.02 $4.00 – $59.82
Queen of The Valley Medical Center Napa $32.26 $20.81 – $174.95
Providence St Joseph Hospital Eureka Eureka $32.26 $20.81 – $198.39

All California hospitals for this procedure →