Cell function assay w/stim at Mark Twain Medical Center

768 Mountain Ranch Rd, San Andreas, CA · CommonSpirit Health · · NPI 1508968819

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

$53.85

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.

$80.85

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.

$13.94 with BCBS - Anthem vs $25.74 with Care 1st — 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
BCBS - Anthem Commercial|Exchange $13.94 ↓ -74%
United Commercial|Select $14.98 ↓ -72%
Blue Shield CA Commercial|HMO $16.48 ↓ -69%
Blue Shield CA Commercial|PPO $16.48 ↓ -69%
Blue Shield CA Commercial|Exchange $16.48 ↓ -69%
United Commercial|Choice $17.18 ↓ -68%
BCBS - Anthem Commercial|All Other Plans $17.87 ↓ -67%
Health Net Commercial|All Plans $19.23 ↓ -64%
First Health Commercial|All Plans $19.31 ↓ -64%
United Commercial|HMO $20.19 ↓ -63%
Aetna Commercial|HMO $21.03 ↓ -61%
Aetna Commercial|PPO $21.03 ↓ -61%
Aetna Commercial|All Other Plans $21.03 ↓ -61%
Kaiser Commercial|All Plans $21.88 ↓ -59%
Cigna Commercial|All Other Plans $23.04 ↓ -57%
Cigna Commercial|PPO $23.04 ↓ -57%
Multiplan Commercial|All Plans $25.23 ↓ -53%
Scan Health Plan Medicare|All Plans $25.74 ↓ -52%
Humana Medicare|All Plans $25.74 ↓ -52%
Aetna Medicare|All Plans $25.74 ↓ -52%
United Medicare|All Plans $25.74 ↓ -52%
Health Net Medicare|All Plans $25.74 ↓ -52%
Kaiser Medicare|All Plans $25.74 ↓ -52%
BCBS - Anthem Medicare|All Plans $25.74 ↓ -52%
Blue Shield CA Medicare|All Plans $25.74 ↓ -52%
Care 1st Medicare|All Plans $25.74 ↓ -52%

Visitor-reported prices

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Cell function assay w/stim at other California hospitals

Hospital City Cash price Negotiated range
Banner Lassen Medical Center Susanville $90.45 $27.17 – $137.74
Arroyo Grande Hospital Santa Maria $136.37 $12.87 – $350.06
French Hospital San Luis Obispo $124.90 $6.95 – $411.52
Mercy Medical Center Mt. Shasta Mt Shasta $145.00 $42.05 – $80.85
Dominican Hospital Santa Cruz $63.36 $64.77 – $1,216.56
Northridge Hospital Medical Center Northridge $39.29 $19.72 – $247.71
Sierra Nevada Memorial Hospital Grass Valley $104.20 $94.34 – $137.99
Sequoia Hospital Redwood City $51.26 $17.79 – $472.99

All California hospitals for this procedure →