Carboxyhemoglobin quantitative 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

$86.58

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.

$130.00

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.

$12.32 with Health Net vs $73.50 with Multiplan — 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
Health Net Medicare|All Plans $12.32 ↓ -86%
Humana Medicare|All Plans $12.32 ↓ -86%
Care 1st Medicare|All Plans $12.32 ↓ -86%
Scan Health Plan Medicare|All Plans $12.32 ↓ -86%
Aetna Medicare|All Plans $12.32 ↓ -86%
Blue Shield CA Medicare|All Plans $12.32 ↓ -86%
BCBS - Anthem Medicare|All Plans $12.32 ↓ -86%
Kaiser Medicare|All Plans $12.32 ↓ -86%
United Medicare|All Plans $12.32 ↓ -86%
Health Plan of San Joaquin Medicaid|All Plans $15.71 ↓ -82%
Health Net Medicaid|All Plans $15.71 ↓ -82%
Kaiser Medicaid|All Plans $15.71 ↓ -82%
BCBS - Anthem Medicaid|All Plans $15.71 ↓ -82%
California Health & Wellness Medicaid|All Plans $15.71 ↓ -82%
BCBS - Anthem Commercial|Exchange $40.60 ↓ -53%
United Commercial|Select $43.62 ↓ -50%
Blue Shield CA Commercial|PPO $48.00 ↓ -45%
Blue Shield CA Commercial|HMO $48.00 ↓ -45%
Blue Shield CA Commercial|Exchange $48.00 ↓ -45%
United Commercial|Choice $50.06 ↓ -42%
BCBS - Anthem Commercial|All Other Plans $52.05 ↓ -40%
Health Net Commercial|All Plans $56.03 ↓ -35%
First Health Commercial|All Plans $56.25 ↓ -35%
United Commercial|HMO $58.81 ↓ -32%
Aetna Commercial|All Other Plans $61.28 ↓ -29%
Aetna Commercial|HMO $61.28 ↓ -29%
Aetna Commercial|PPO $61.28 ↓ -29%
Kaiser Commercial|All Plans $63.75 ↓ -26%
Cigna Commercial|PPO $67.13 ↓ -22%
Cigna Commercial|All Other Plans $67.13 ↓ -22%
Multiplan Commercial|All Plans $73.50 ↓ -15%

Visitor-reported prices

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Carboxyhemoglobin quantitative at other California hospitals

Hospital City Cash price Negotiated range
St. John's Camarillo Hospital Camarillo $72.27 $9.72 – $32.70
Banner Lassen Medical Center Susanville $23.16 $2.46 – $24.25
Petaluma Valley Hospital Petaluma $273.87 $12.07 – $100.63
Arroyo Grande Hospital Santa Maria $45.80 $12.32 – $73.50
French Hospital San Luis Obispo $45.48 $12.32 – $73.50
Mercy Hospitals – Bakersfield Bakersfield $54.54 $12.32 – $35.41
Bakersfield Memorial Hospital Bakersfield $53.95 $12.32 – $35.41
Queen of The Valley Medical Center Napa $351.39 $12.32 – $127.17

All California hospitals for this procedure →