Magnesium test at Mount Auburn Hospital
CPT 83735 · Cambridge, MA
These are Mount Auburn Hospital'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.
The posted cash price equals the gross charge: this file shows no self-pay discount for this service.
Across 22 Massachusetts hospitals we index that post a cash price for this service: lowest $12.78, median $47.13, highest $291.00. See every hospital.
Nearby hospitals, same service
| Hospital | Distance | Cash price | Gross charge | File date |
|---|---|---|---|---|
| Cambridge Health Alliance Cambridge, MA | 2.1 mi | $38.00 | $38.00 | 2026-03-20 |
| Boston Medical Center-Brighton Brighton, MA | 2.3 mi | $12.78 | $28.39 | 2026-03-13 |
| Beth Israel Deaconess Medical Center Boston, MA | 2.8 mi | $125.00 | $125.00 | 2026-04-01 |
| Brigham and Women's Hospital Boston, MA | 3.5 mi | $80.25 | $107.00 | 2026-03-27 |
| Massachusetts General Hospital Boston, MA | 3.7 mi | $80.25 | $107.00 | 2026-03-27 |
| Massachusetts Eye and Ear Infirmary - Boston, MA | 3.7 mi | $136.50 | $182.00 | 2026-03-27 |
| The Shriners' Hospital for Children - Boston Boston, MA | 3.7 mi | $64.90 | $64.90 | 2026-03-17 |
| New England Baptist Hospital Boston, MA | 3.8 mi | $71.00 | $71.00 | 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 |
|---|---|---|---|---|
| CHG ASSAY OF MAGNESIUM standard_charge_information[5300] | both | $47.00 | $47.00 | |
| Assay of magnesium standard_charge_information[16654] | outpatient | $6.70 – $18.30 |
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 Mount Auburn Hospital prices