Blood gases o2 saturation direct measurement at Providence Cedars-Sinai Tarzana Medical Center

18321 Clark St, Tarzana, CA · Providence · · NPI 1821250762

Source: hospital's published price file ↗ · Published Apr 1, 2026 · Ingested Sep 11, 2026

$398.30

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.

$1,138.00

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.

$74.38 with Aetna vs $270.41 with Blue Shield — 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
Aetna All Commercial Plans $74.38 ↓ -81%
Blue Shield Epn/Ifp Benefit Exchange $75.73 ↓ -81%
Aetna Medicare Managed Care Plan $78.77 ↓ -80%
Humana Choicecare Medicare Managed Care Plan $80.35 ↓ -80%
Blue Shield Tandem Ppo/Blue High Performance Ppo/Epo $80.89 ↓ -80%
Central Health Plan Medicare Managed Care Plan $86.65 ↓ -78%
Blue Shield Hmo/Ppo/Epo $90.80 ↓ -77%
La Care Health Plan Exchange $102.40 ↓ -74%
Blue Cross Anthem Vivity City Of La Other Commercial Plan $111.73 ↓ -72%
Blue Cross Anthem Vivity Non City Of La Other Commercial Plan $125.82 ↓ -68%
Cigna Oap Hmo/Pos $138.75 ↓ -65%
Cigna Ppo $138.75 ↓ -65%
Healthnet Ambetter Hmo $145.72 ↓ -63%
Unitedhealthcare All Commercial Plans $157.54 ↓ -60%
Unitedhealthcare Select/Navigate Hmo $157.54 ↓ -60%
First Health/Coventry Coventry All Commercial Plans $157.54 ↓ -60%
Healthnet Ambetter Ppo $168.57 ↓ -58%
Blue Cross All Commercial Plans $176.65 ↓ -56%
Blue Shield Medicare Managed Care Plan $270.41 ↓ -32%

Visitor-reported prices

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Blood gases o2 saturation direct measurement at other California hospitals

Hospital City Cash price Negotiated range
St. John's Camarillo Hospital Camarillo $530.42 $52.74 – $944.58
Banner Lassen Medical Center Susanville $148.36 $15.75 – $229.89
Petaluma Valley Hospital Petaluma $684.93 $77.19 – $229.50
Arroyo Grande Hospital Santa Maria $237.12 $34.86 – $542.92
French Hospital San Luis Obispo $402.59 $34.86 – $1,006.46
Mercy Hospitals – Bakersfield Bakersfield $233.73 $34.14 – $372.80
Bakersfield Memorial Hospital Bakersfield $231.21 $34.14 – $368.14
Queen of The Valley Medical Center Napa $788.46 $78.77 – $290.03

All California hospitals for this procedure →