Ghs prostatic acid phosphatase (mayo) at St. Michael Medical Center

1800 NW Myhre Rd, Silverdale, WA · Vmfh · · NPI 1518912609

Source: hospital's published price file ↗ · Published Feb 28, 2026 · Ingested Sep 17, 2026

$80.17

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.

$181.64

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.

$9.66 with Kaiser vs $163.48 with MultiPlan — 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
Kaiser Medicare|All Plans $9.66 ↓ -88%
CHPW Medicare|All Plans $9.66 ↓ -88%
BCBS - Regence Medicare|All Plans $9.66 ↓ -88%
Optum Medicare|All Plans $9.76 ↓ -88%
BCBS - Premera Medicare|All Plans $9.95 ↓ -88%
Aetna Medicare|All Plans $9.95 ↓ -88%
BCBS - Regence Commercial|All Plans $10.14 ↓ -87%
Humana Medicare|All Plans $10.34 ↓ -87%
Wellcare Medicare|All Plans $10.43 ↓ -87%
Molina Medicare|All Plans $10.43 ↓ -87%
United Medicare|All Plans $10.43 ↓ -87%
Uniform Medical Plan Commercial|All Plans $14.49 ↓ -82%
BCBS - Premera Commercial|All Other Plans $16.91 ↓ -79%
Sound Family Medicine Commercial|All Plans $19.32 ↓ -76%
Molina Commercial|Marketplace Exchange $22.22 ↓ -72%
Coordinated Care Commercial|Ambetter Exchange $22.60 ↓ -72%
BCBS - Premera Commercial|LifeWise Primary Exchange $24.54 ↓ -69%
Cigna Commercial|All Plans $31.00 ↓ -61%
Aetna Commercial|AWH $123.52 ↑ +54%
Aetna Commercial|Sound Health $130.79 ↑ +63%
First Choice Commercial|All Plans $132.60 ↑ +65%
Aetna Commercial|All Other Plans $145.32 ↑ +81%
Aetna Commercial|WEA $145.32 ↑ +81%
United Commercial|Cascade Care $148.95 ↑ +86%
United Commercial|All Other Plans $148.95 ↑ +86%
Aetna Commercial|Rental $159.85 ↑ +99%
MultiPlan Commercial|All Plans $163.48 ↑ +104%

Visitor-reported prices

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Ghs prostatic acid phosphatase (mayo) at other Washington hospitals

Hospital City Cash price Negotiated range
Providence St Joseph Hospital Chewelah $76.30 not published
Central Medical Center Seattle $43.20 $7.00 – $7.00
Providence Mount Carmel Hospital Colville $109.20 not published
Providence St Mary Medical Center Walla Walla $32.90 $9.66 – $17.87
Providence Holy Family Hospital Spokane $86.10 $9.66 – $41.22
Providence Regional Medical Center Everett - Colby Campus Everett $20.28 $9.66 – $40.57
MultiCare Valley Hospital Spokane Valley $42.80 $3.31 – $17.51
MultiCare Yakima Memorial Hospital Yakima $17.20 $10.00 – $17.34

All Washington hospitals for this procedure →