Calcium ionized 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

$6.07

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.

$9.11

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.

$4.94 with BCBS - Anthem vs $9.11 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 $4.94 ↓ -19%
United Commercial|Select $5.30 ↓ -13%
Blue Shield CA Commercial|HMO $5.84 ↓ -4%
Blue Shield CA Commercial|PPO $5.84 ↓ -4%
Blue Shield CA Commercial|Exchange $5.84 ↓ -4%
United Commercial|Choice $6.09 ↑ +0%
BCBS - Anthem Commercial|All Other Plans $6.33 ↑ +4%
Health Net Commercial|All Plans $6.81 ↑ +12%
First Health Commercial|All Plans $6.84 ↑ +13%
United Commercial|HMO $7.15 ↑ +18%
Aetna Commercial|PPO $7.45 ↑ +23%
Aetna Commercial|HMO $7.45 ↑ +23%
Aetna Commercial|All Other Plans $7.45 ↑ +23%
Kaiser Commercial|All Plans $7.75 ↑ +28%
Cigna Commercial|All Other Plans $8.16 ↑ +34%
Cigna Commercial|PPO $8.16 ↑ +34%
Multiplan Commercial|All Plans $8.93 ↑ +47%
Health Plan of San Joaquin Medicaid|All Plans $9.11 ↑ +50%
Humana Medicare|All Plans $9.11 ↑ +50%
Aetna Medicare|All Plans $9.11 ↑ +50%
United Medicare|All Plans $9.11 ↑ +50%
Health Net Medicaid|All Plans $9.11 ↑ +50%
Health Net Medicare|All Plans $9.11 ↑ +50%
Kaiser Medicaid|All Plans $9.11 ↑ +50%
Kaiser Medicare|All Plans $9.11 ↑ +50%
BCBS - Anthem Medicaid|All Plans $9.11 ↑ +50%
BCBS - Anthem Medicare|All Plans $9.11 ↑ +50%
Blue Shield CA Medicare|All Plans $9.11 ↑ +50%
Scan Health Plan Medicare|All Plans $9.11 ↑ +50%
California Health & Wellness Medicaid|All Plans $9.11 ↑ +50%
Care 1st Medicare|All Plans $9.11 ↑ +50%

Visitor-reported prices

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Calcium ionized at other California hospitals

Hospital City Cash price Negotiated range
St. John's Camarillo Hospital Camarillo $80.16 $2.46 – $36.29
Petaluma Valley Hospital Petaluma $89.25 $13.41 – $111.56
Arroyo Grande Hospital Santa Maria $96.73 $4.56 – $35.24
French Hospital San Luis Obispo $88.60 $2.46 – $41.43
Mercy Hospitals – Bakersfield Bakersfield $79.77 $4.56 – $39.30
Bakersfield Memorial Hospital Bakersfield $78.91 $4.56 – $39.30
Queen of The Valley Medical Center Napa $264.69 $13.68 – $140.99
Providence St Joseph Hospital Eureka Eureka $200.94 $13.68 – $159.88

All California hospitals for this procedure →