Poct blood gases ph pco2 po2 arterial calculated o2 at Mercy Rehabilitation Hospital St Louis

14561 N Outer 40 Rd, Chesterfield, MO · Mercy · · NPI 1811048614

Source: hospital's published price file ↗ · Published Mar 16, 2026 · Ingested Sep 8, 2026

not published by hospital

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.

not published by hospital

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.

$66.91 with Devoted Health vs $66.91 with UHC Medicare — 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
Devoted Health Devoted Health $66.91
Wellcare Wellcare $66.91
Medica Medica $66.91
Tricare Tricare $66.91
Ambetter Ambetter $66.91
Cigna Cigna $66.91
UMR CPD UMR CPD $66.91
Aetna Medicare Aetna Medicare $66.91
Aetna/ Managed Choice POS Elect Choice and PPO Products Aetna/ Managed Choice POS Elect Choice and PPO Products $66.91
Aetna/Commercial Product Aetna/Commercial Product $66.91
Anthem Alliance Anthem Alliance $66.91
Anthem Blue Access Anthem Blue Access $66.91
Anthem Blue Access Choice Anthem Blue Access Choice $66.91
Anthem Blue Preferred Anthem Blue Preferred $66.91
Anthem Medicare Anthem Medicare $66.91
Anthem Pathway Anthem Pathway $66.91
Cigna Medicare Advantage Cigna Medicare Advantage $66.91
Cigna PPO Cigna PPO $66.91
Essence Essence $66.91
Healthlink HMO Healthlink HMO $66.91
Healthlink PPO Healthlink PPO $66.91
Healthy Blue (Missouri Care) Healthy Blue (Missouri Care) $66.91
HomeState Health Plan HomeState Health Plan $66.91
Humana Gold Humana Gold $66.91
Medicaid MO Medicaid MO $66.91
Meritain Health CPD Meritain Health CPD $66.91
Meritain Health PPO CPD Meritain Health PPO CPD $66.91
Starmark CPD Starmark CPD $66.91
UHC All Payer UHC All Payer $66.91
UHC Exchange UHC Exchange $66.91
UHC Medicaid UHC Medicaid $66.91
UHC Medicare UHC Medicare $66.91

Visitor-reported prices

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Poct blood gases ph pco2 po2 arterial calculated o2 at other Missouri hospitals

Hospital City Cash price Negotiated range
Mercy Hospital Aurora Aurora $136.50 $22.16 – $36.13
Mercy Hospital Lincoln Troy $198.90 $23.06 – $58.66
Mercy Hospital Southeast Cape Girardeau $151.45 $23.46 – $93.64
Mercy Hospital Stoddard Dexter $135.85 $23.46 – $91.25
Mercy Orthopedic Hospital Springfield Ozark $281.45 $19.87 – $137.30

All Missouri hospitals for this procedure →