CMS Price Transparency Data

Blood test, magnesium

Facility: Grossmont Hospital

Billing Code: 83735 (CPT)

Factual Cost Summary (Answer Capsule)

CPT Billing Code: 83735
Insurance Median: $27
Cash Discount Price: $30
vs. Medicare Baseline: 4.03x Medicare

The contracted insurance negotiated median rate for a Blood test, magnesium at Grossmont Hospital is $27. If you are paying out-of-pocket or uninsured, the self-pay cash discount rate is $30. Compared to the federal Medicare reimbursement reference rate of $6.7, this hospital’s rate is 4.03x the Medicare baseline. Located in 5555 Grossmont Center Drive Box 58, La Mesa, CA.

Cash / Self-Pay

$30

Average discount available for prompt cash payment at this facility.

Insurance Median

$27

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: $30 (448%)

Insurance Median: $27 (403%)

Cash: $30 (448% of Medicare)

Ins. Median: $27 (403% 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.

Elevated Commercial Rate Alert (Value-Gap)

The negotiated rate at this facility is 403% of the Medicare baseline (a markup of 303%). Patients with high-deductible plans or out-of-network benefits may face excessive out-of-pocket costs.

Consult Patient Advocate

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
Health Net	$1 - $182	15%
Molina	$1 - $536	15%
Humana	$2 - $55	30%
Aetna	$3 - $128	45%
Blue Cross Blue Shield	$4 - $130	60%
Epic Americas	$4 - $130	60%
Multiplan	$4 - $55	60%
County Medical Services	$5 - $113	75%
Allianz Global Assistance	$6 - $7	90%
Medi-Cal	$6 - $123	90%
San Diego Pace	$6 - $116	90%
UnitedHealthcare	$6 - $125	90%
Blue Shield	$7 - $149	104%
Cigna	$7 - $153	104%
Community Health Group	$7 - $74	104%
Indian Health Council	$8 - $143	119%
Medicare (plans)	$8 - $20	119%
Managed Health Network	$22 - $55	328%
California Health And Wellness	$25	373%
Kaiser	$27 - $105	403%
Interplan	$28 - $182	418%

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 $30.
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 Grossmont Hospital 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.