Magnesium test at Marinhealth Medical Center
CPT 83735 · Greenbrae, CA
These are Marinhealth Medical Center's own posted figures from its standard-charges file dated March 26, 2026. They are not a quote. Source: the hospital's file · its price transparency page.
Across 65 California hospitals we index that post a cash price for this service: lowest $6.00, median $108.05, highest $477.25. See every hospital.
Nearby hospitals, same service
| Hospital | Distance | Cash price | Gross charge | File date |
|---|---|---|---|---|
| Chinese Hospital San Francisco, CA | 12.6 mi | $183.00 | $183.00 | 2026-07-22 |
| Kaiser Foundation Hospital - Oakland/Richmond Oakland, CA | 20.0 mi | $120.40 | $215.00 | 2026-04-01 |
| Kaiser Foundation Hospital - South San Francisco South San Francisco, CA | 21.5 mi | $120.40 | $215.00 | 2026-04-01 |
| Kaiser Foundation Hospital - San Leandro San Leandro, CA | 26.3 mi | $120.40 | $215.00 | 2026-04-01 |
| Kaiser Foundation Hospital - Walnut Creek Walnut Creek, CA | 28.4 mi | $120.40 | $215.00 | 2026-04-01 |
| Kaiser Foundation Hospital - Redwood City Redwood City, CA | 36.9 mi | $120.40 | $215.00 | 2026-04-01 |
| Kaiser Foundation Hospital - Antioch Antioch, CA | 42.2 mi | $120.40 | $215.00 | 2026-04-01 |
| Kaiser Foundation Hospital - Fremont Fremont, CA | 44.8 mi | $120.40 | $215.00 | 2026-04-01 |
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 |
|---|---|---|---|---|
| ASSAY OF MAGNESIUM line 13619 | outpatient | $160.27 | $267.12 | $6.70 – $2,330.00 |
| ASSAY OF MAGNESIUM line 195 | outpatient | $10.21 | $17.01 | $6.70 – $2,330.00 |
| ASSAY OF MAGNESIUM line 214 | outpatient | $2.50 | $4.17 | $4.17 – $2,330.00 |
| MAGNESIUM LEVEL mod 90 line 5547 | outpatient | $10.21 | $17.01 | $6.70 – $2,330.00 |
| MAGNESIUM LEVEL line 6547 | outpatient | $151.20 | $252.00 | $6.70 – $2,330.00 |
| MAGNESIUM LEVEL mod 90_GA line 10889 | outpatient | $10.21 | $17.01 | $6.70 – $2,330.00 |
| MAGNESIUM LEVEL mod 90_GZ line 10890 | outpatient | $10.21 | $17.01 | $6.70 – $2,330.00 |
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 Marinhealth Medical Center prices