Ammonia at Mercy Medical Center Mt. Shasta

914 Pine St, Mt Shasta, CA · CommonSpirit Health · · NPI 1518085430

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

$140.04

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.

$180.00

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.

$7.58 with California Health & Wellness vs $14.57 with Blue Shield CA — 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
California Health & Wellness Medicaid|All Plans $7.58 ↓ -95%
BCBS - Anthem Commercial|Exchange $9.91 ↓ -93%
Cigna Commercial|PPO $11.95 ↓ -91%
Cigna Commercial|All Other Plans $11.95 ↓ -91%
BCBS - Anthem Commercial|All Other Plans $12.24 ↓ -91%
United Commercial|HMO $12.54 ↓ -91%
Aetna Commercial|HMO $12.68 ↓ -91%
Aetna Commercial|All Other Plans $12.68 ↓ -91%
Aetna Commercial|PPO $12.68 ↓ -91%
United Commercial|All Other Plans $12.83 ↓ -91%
Partnership Health Plan Medicaid|All Plans $12.95 ↓ -91%
Health Net Commercial|All Plans $13.56 ↓ -90%
Coventry Commercial|All Plans $14.28 ↓ -90%
MultiPlan Commercial|All Plans $14.28 ↓ -90%
Health Net Medicare|All Plans $14.57 ↓ -90%
Aetna Medicare|All Plans $14.57 ↓ -90%
United Medicare|All Plans $14.57 ↓ -90%
Humana Medicare|All Plans $14.57 ↓ -90%
Kaiser Medicare|All Plans $14.57 ↓ -90%
BCBS - Anthem Medicaid|All Plans $14.57 ↓ -90%
BCBS - Anthem Medicare|All Plans $14.57 ↓ -90%
Blue Shield CA Medicare|All Plans $14.57 ↓ -90%

Visitor-reported prices

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Ammonia at other California hospitals

Hospital City Cash price Negotiated range
St. John's Camarillo Hospital Camarillo $222.95 $14.57 – $45.46
Banner Lassen Medical Center Susanville $40.69 $2.91 – $42.68
Petaluma Valley Hospital Petaluma $507.45 $14.28 – $118.98
Arroyo Grande Hospital Santa Maria $196.03 $14.57 – $45.08
Mark Twain Medical Center San Andreas $226.44 $14.57 – $246.96
French Hospital San Luis Obispo $179.54 $12.42 – $45.08
Mercy Hospitals – Bakersfield Bakersfield $249.32 $4.17 – $41.87
Bakersfield Memorial Hospital Bakersfield $246.26 $4.17 – $41.87

All California hospitals for this procedure →