CMS Price Transparency Data

Blood test, magnesium

Facility: Adventist Health St Helena

Billing Code: 83735 (CPT)

Factual Cost Summary (Answer Capsule)

CPT Billing Code: 83735
Insurance Median: $7
Cash Discount Price: $42
vs. Medicare Baseline: 1.04x Medicare

The contracted insurance negotiated median rate for a Blood test, magnesium at Adventist Health St Helena is $7. If you are paying out-of-pocket or uninsured, the self-pay cash discount rate is $42. Compared to the federal Medicare reimbursement reference rate of $6.7, this hospital’s rate is 1.04x the Medicare baseline. Located in 10 Woodland Road, Saint Helena, CA.

Cash / Self-Pay

$42

Average discount available for prompt cash payment at this facility.

Insurance Median

Median negotiated contract rate across all mapped commercial carriers.

Medicare Reference Rate

$6.7

Standard federal government reimbursement rate for this code.

Visual Cost Comparison vs. Medicare

Medicare Reference Baseline: $6.7 (100%)

Cash / Self-Pay: $42 (627%)

Insurance Median: $7 (104%)

Cash: $42 (627% of Medicare)

Ins. Median: $7 (104% of Medicare)

Understanding this gauge: We use the federal Medicare rate of $6.7 as the cost baseline. Rates below the baseline represent excellent value. In-network commercial rates commonly hover around 150% - 250% of Medicare, while rates exceeding 300% are elevated. Hover over the green and blue markers to view detailed calculations.

Out-of-Pocket Cost Estimator

Estimate whether it is more economical to use your insurance or pay the upfront self-pay cash rate.

Billing Status

Remaining Deductible ($)

Your Coinsurance Rate (%)

Input your details and click calculate to compare out-of-pocket costs.

Commercial Insurance Negotiated Rates

Negotiated contract ranges established by major commercial carriers at this facility.

Carrier / Plan Group	Contract Rate Range	vs. Medicare Reference
Blue Shield Behav Hlth	$2 - $126	30%
Blue Shield Epn-All Other Plans	$2 - $132	30%
Blue Shield Non-Epn	$2 - $130	30%
UnitedHealthcare	$2 - $179	30%
Choicecare-All Plans	$3 - $197	45%
Interplan-All Plans	$3 - $183	45%
Phcs-All Plans	$3 - $155	45%
Western Growers-All Plans	$3 - $149	45%
Beech Street-All Plans	$4 - $211	60%
Cigna	$4 - $225	60%
Galaxy Network-All Plans	$4 - $253	60%
Health Management Network-All Plans	$4 - $239	60%
Kaiser-All Other Plans	$4 - $230	60%
Three Rivers-All Plans	$4 - $253	60%
Va Medi-Cal	$5 - $8	75%
Blue Shield Bh Mcr Adv	$7	104%
Blue Shield Mcr Adv	$7	104%
Kaiser Mcr Adv	$7	104%
Tricare	$7	104%
Va Mcr - All Other Plans	$7	104%
Ah Employee Health Plan - All Plans	$12	179%
Healthnet-All Plans	$19	284%
Aetna	$39	582%
Blue Cross Blue Shield	$58 - $77	866%

Self-Pay Upfront Cash Action Plan

Request a "Self-Pay classification" with the billing desk before receiving care.
Ask for a written "Prompt-Pay Discount" agreement quoting the price of $42.
Request and sign a "Waiver of Insurance Submission" to prevent automatic billing.
Verify CPT Code matches exactly: 83735.

Insurance In-Network Protection Plan

Contact your insurance company to confirm Adventist Health St Helena is fully in-network.
Ask your insurer if "Prior Authorization" is required for CPT code 83735.
Confirm the specific physician or imaging center is also in-network (not just the hospital building).
Audit your Explanation of Benefits (EOB) against the final itemized hospital invoice.