Antithrombin iii activity at Northridge Hospital Medical Center

18300 Roscoe Blvd, Northridge, CA · CommonSpirit Health · · NPI 1417089350

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

$115.23

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.

$413.00

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.

$1.82 with Blue Shield CA vs $75.10 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
Blue Shield CA Commercial|Exchange $1.82 ↓ -98%
Blue Shield CA Commercial|All Other Plans $2.21 ↓ -98%
DHR Medicaid|< 21 $3.25 ↓ -97%
DHR Medicaid|> 21 $3.25 ↓ -97%
Blue Shield CA Medicare|BlueShield Promise $8.45 ↓ -93%
BCBS - Anthem Commercial|Vivity $10.27 ↓ -91%
MultiPlan Commercial|All Plans $10.40 ↓ -91%
Healthsmart Commercial|All Plans $11.31 ↓ -90%
Central Health Plan Medicare|All Plans $11.85 ↓ -90%
Humana Medicare|All Plans $11.85 ↓ -90%
Aetna Medicare|All Plans $11.85 ↓ -90%
First Health Commercial|All Plans $11.85 ↓ -90%
Molina Medicare|All Plans $11.85 ↓ -90%
United Medicare|All Plans $11.85 ↓ -90%
Health Net Medicare|All Plans $11.85 ↓ -90%
Kaiser Medicare|All Plans $11.85 ↓ -90%
Central Health Plan Commercial|All Plans $11.85 ↓ -90%
Humana Commercial|All Plans $11.85 ↓ -90%
BCBS - Anthem Medicare|All Plans $11.85 ↓ -90%
Blue Shield CA Medicare|All Other Plans $11.85 ↓ -90%
Scan Health Plan Medicare|All Plans $11.85 ↓ -90%
LA Care Medicare|All Plans $11.85 ↓ -90%
HCLA Medicare|Preferred IPA $11.85 ↓ -90%
MHN Commercial|All Plans $11.85 ↓ -90%
BCBS - Anthem Commercial|All Other Plans $11.96 ↓ -90%
Aetna Commercial|All Other Plans $13.00 ↓ -89%
BCBS - Anthem Commercial|MCS $13.00 ↓ -89%
BCBS - Anthem Medicaid|< 21 $13.00 ↓ -89%
BCBS - Anthem Medicaid|> 21 $13.00 ↓ -89%
United Commercial|All Other Plans $13.00 ↓ -89%
Molina Medicaid|> 21 $13.00 ↓ -89%
US Behavioral Health Commercial|All Plans $13.00 ↓ -89%
Health Net Medicaid|< 21 $13.00 ↓ -89%
Health Net Medicaid|> 21 $13.00 ↓ -89%
Kaiser Medicaid|< 21 $13.00 ↓ -89%
Kaiser Medicaid|> 21 $13.00 ↓ -89%
Aetna Commercial|PPO $13.00 ↓ -89%
Molina Medicaid|< 21 $13.00 ↓ -89%
HCLA Medicaid|Preferred IPA < 21 $13.00 ↓ -89%
Aetna Commercial|HMO $13.00 ↓ -89%
HCLA Medicaid|Preferred IPA > 21 $13.00 ↓ -89%
Gold Coast Health Plan Medicaid|All Plans $13.00 ↓ -89%
United Commercial|HMO $13.00 ↓ -89%
LA Care Commercial|All Plans $14.81 ↓ -87%
Cigna Commercial|All Other Plans $21.60 ↓ -81%
Cigna Commercial|PPO $21.60 ↓ -81%
LA Care Medicaid|All Plans $48.06 ↓ -58%
Blue Shield CA Medicaid|All Plans $75.10 ↓ -35%

Visitor-reported prices

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Antithrombin iii activity at other California hospitals

Hospital City Cash price Negotiated range
St. John's Camarillo Hospital Camarillo $6.93 $2.83 – $31.43
Petaluma Valley Hospital Petaluma $100.22 $11.61 – $96.72
Arroyo Grande Hospital Santa Maria $77.79 $6.50 – $30.52
Mark Twain Medical Center San Andreas $10.54 $7.04 – $13.00
French Hospital San Luis Obispo $71.25 $3.51 – $35.88
Mercy Hospitals – Bakersfield Bakersfield $106.85 $6.50 – $34.04
Bakersfield Memorial Hospital Bakersfield $105.70 $6.50 – $34.04
Queen of The Valley Medical Center Napa $100.22 $11.85 – $122.24

All California hospitals for this procedure →