Magnesium test at St. Mary Medical Center
CPT 83735 · Long Beach, CA
These are St. Mary Medical Center's own posted figures from its standard-charges file dated April 1, 2026. They are not a quote. Source: the hospital's file · its price transparency page.
Across 37 California hospitals we index that post a cash price for this service: lowest $16.55, median $117.60, highest $477.25. See every hospital.
Nearby hospitals, same service
| Hospital | Distance | Cash price | Gross charge | File date |
|---|---|---|---|---|
| Kaiser Foundation Hospital - South Bay Harbor City, CA | 6.1 mi | $106.08 | $204.00 | 2026-04-01 |
| Providence Little CO of Mary Medical Center San Pedro San Pedro, CA | 7.4 mi | $96.60 | $276.00 | 2026-04-01 |
| Memorial Hospital of Gardena Gardena, CA | 9.5 mi | $274.05 | $274.05 | 2026-02-04 |
| Saint Francis Medical Center Lynwood, CA | 9.8 mi | $120.40 | $215.00 | 2026-04-01 |
| Providence Little Company of Mary Medical Center Torrance Torrance, CA | 9.8 mi | $96.60 | $276.00 | 2026-04-01 |
| PIH Health Downey Hospital Downey, CA | 11.6 mi | $106.08 | $204.00 | 2026-04-01 |
| Community Hospital of Huntington Park Huntington Park, CA | 13.7 mi | $274.05 | $274.05 | 2026-02-04 |
| East Los Angeles Doctors Hospital Los Angeles, CA | 16.6 mi | $274.05 | $274.05 | 2026-02-04 |
Distances are straight-line from ZIP code centers. Each hospital's figures come from its own file; files are updated on different dates.
Every row for CPT 83735 in this hospital's file
| Row in the hospital's file | Setting | Cash | Gross | Insurer min – max |
|---|---|---|---|---|
| HC ASSAY OF MAGNESIUM CDM standard_charge_information[5947] | both | $110.40 | $230.00 | |
| HC MAGNESIUM QUANT URINE standard_charge_information[5406] | both | $16.80 | $35.00 | |
| HC ASSAY OF MAGNESIUM LAB standard_charge_information[5438] | both | $32.52 | $67.75 | |
| HC ASSAY OF MAGNESIUM CDM standard_charge_information[5947] | both | $4.05 | $8.43 | |
| HC ASSAY OF MAGNESIUM CDM standard_charge_information[5947] | both | $6.24 | $13.00 | |
| Assay of magnesium standard_charge_information[327357] | outpatient | $6.70 – $94.64 |
The first row is the one used above. A price for one code usually covers the hospital's facility charge only; the doctor, anesthesia, pathology and other services can be billed separately. Ask the hospital for a good faith estimate before a scheduled service: if you pay yourself and the bill comes in $400 or more above the estimate, you can dispute it under the No Surprises Act.
Check a bill from this hospital All St. Mary Medical Center prices