Carotid Artery Ultrasound (Duplex) 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

$6,036.63

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.

$9,064.00

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.

$120.30 with Health Net vs $455.70 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 $120.30 ↓ -98%
Humana Medicare|All Plans $120.30 ↓ -98%
Care 1st Medicare|All Plans $120.30 ↓ -98%
Scan Health Plan Medicare|All Plans $120.30 ↓ -98%
Aetna Medicare|All Plans $120.30 ↓ -98%
Blue Shield CA Medicare|All Plans $120.30 ↓ -98%
BCBS - Anthem Medicare|All Plans $120.30 ↓ -98%
Kaiser Medicare|All Plans $120.30 ↓ -98%
United Medicare|All Plans $120.30 ↓ -98%
Health Plan of San Joaquin Medicaid|All Plans $179.75 ↓ -97%
Health Net Medicaid|All Plans $179.75 ↓ -97%
Kaiser Medicaid|All Plans $179.75 ↓ -97%
BCBS - Anthem Medicaid|All Plans $179.75 ↓ -97%
California Health & Wellness Medicaid|All Plans $179.75 ↓ -97%
BCBS - Anthem Commercial|Exchange $251.71 ↓ -96%
United Commercial|Select $270.45 ↓ -96%
Blue Shield CA Commercial|PPO $297.60 ↓ -95%
Blue Shield CA Commercial|HMO $297.60 ↓ -95%
Blue Shield CA Commercial|Exchange $297.60 ↓ -95%
United Commercial|Choice $310.35 ↓ -95%
BCBS - Anthem Commercial|All Other Plans $322.71 ↓ -95%
Health Net Commercial|All Plans $347.36 ↓ -94%
First Health Commercial|All Plans $348.75 ↓ -94%
United Commercial|HMO $364.61 ↓ -94%
Aetna Commercial|All Other Plans $379.91 ↓ -94%
Aetna Commercial|HMO $379.91 ↓ -94%
Aetna Commercial|PPO $379.91 ↓ -94%
Kaiser Commercial|All Plans $395.25 ↓ -93%
Cigna Commercial|PPO $416.18 ↓ -93%
Cigna Commercial|All Other Plans $416.18 ↓ -93%
Multiplan Commercial|All Plans $455.70 ↓ -92%

Visitor-reported prices

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Carotid Artery Ultrasound (Duplex) at other California hospitals

Hospital City Cash price Negotiated range
St. John's Camarillo Hospital Camarillo $1,241.30 $221.09 – $2,210.52
Banner Lassen Medical Center Susanville $1,143.52 $48.34 – $1,830.39
Petaluma Valley Hospital Petaluma $1,428.51 $321.54 – $1,094.08
Arroyo Grande Hospital Santa Maria $1,436.80 $179.75 – $2,597.98
French Hospital San Luis Obispo $2,157.57 $179.75 – $1,809.08
Mercy Hospitals – Bakersfield Bakersfield $1,031.01 $179.75 – $2,223.20
Bakersfield Memorial Hospital Bakersfield $1,019.90 $179.75 – $2,195.41
Queen of The Valley Medical Center Napa $1,879.86 $338.78 – $1,382.65

All California hospitals for this procedure →