Prices at 4 hospitals in Boston, MA, from their machine-readable files. Here the median cash price is $83 — 29% above the US median ($64), roughly 11.9× the Medicare rate.
Lowest cash prices
| Hospital | Location | Cash | Insurer | CMS rating | ER wait | Readmit |
|---|---|---|---|---|---|---|
| Tufts Medical Center | Boston, MA | $18 | $13 | ★ 2/5 | 208 min | — |
| The Shriners' Hospital for Children-Boston | Boston, MA | $68 | $10 | — | — | — |
| Massachusetts General Hospital | Boston, MA | $98 | $49 | ★ 5/5 | 288 min | — |
| Brigham and Women's Hospital | Boston, MA | $98 | $70 | ★ 5/5 | 300 min | — |
CMS rating = overall hospital star rating (1–5); ER wait = median minutes in the emergency department; Readmit = 30-day readmission rate (lower is better) — all from Medicare’s Care Compare; “—” = not reported. Data last updated October 2026. Prices from hospitals’ machine-readable files (45 CFR §180); Medicare benchmark from CMS PFS/CLFS/IPPS. Prices below 15% of the median are excluded as likely partial or mis-coded charges. Estimates — confirm with the hospital. Report an incorrect price.
Price comparison (median)
Typical cash price here is $83 — about 11.9× the Medicare rate ($7). High vs Medicare. A fair cash price is usually within ~2× Medicare ($14).
💡 Asking for the cash price instead of the $100 list price could save about $16 (16%).
Rough estimate from this procedure’s median insurer-negotiated rate. Your actual cost depends on your plan — confirm with your insurer.
Doctors who perform this in Boston
Clinicians who reported the most Medicare volume for this service locally. This reflects Original Medicare activity only and is a volume signal, not a quality ranking.
| Clinician | Specialty | Location | Medicare services |
|---|---|---|---|
| Marshall Katz, M.D. | Cardiology | Boston, MA | 567 |
| Stewart Lecker, M.D. | Nephrology | Boston, MA | 88 |
| Sanjay Shrivastava, MD | Cardiology | Boston, MA | 75 |
| John Danziger, M.D. | Nephrology | Boston, MA | 46 |
| Jeffrey Garber, M.D. | Endocrinology | Boston, MA | 42 |
| Wendy Farnsworth, M.D. | Internal Medicine | Boston, MA | 33 |
| Shimontini Mitra, MBCHB | Nephrology | Boston, MA | 14 |
All Electrolyte panel prices in Massachusetts → · All Electrolyte panel prices (national) · All hospitals in Boston