Arterial blood gas (ABG) cost in Maryland

Prices at 37 hospitals in Maryland, from their machine-readable files. Here the median cash price is $89 — 43% below the US median ($154), roughly 3.4× the Medicare rate.

Lowest cash prices

HospitalLocationCashInsurerCMS ratingER waitReadmit
Greater Baltimore Medical Center Baltimore, MD $22 $22 ★ 5/5 228 min —
Western Maryland Regional Medical Center Cumberland, MD $50 $83 ★ 4/5 235 min —
Kennedy Krieger Institute Baltimore, MD $53 — — — —
Luminis Health Anne Arundel Medical Center, Inc Annapolis, MD $55 — ★ 3/5 245 min —
Frederick Health Hospital Frederick, MD $62 — ★ 3/5 230 min —
Holy Cross Germantown Hospital Germantown, MD $65 $63 ★ 1/5 233 min —
Medstar Saint Mary's Hospital Leonardtown, MD $66 $68 ★ 4/5 256 min —
Medstar Franklin Square Medical Center Rosedale, MD $66 $68 ★ 3/5 367 min —
Luminis Health J Kent McNew Family Medical Center Annapolis, MD $68 — — — —
Luminis Health Doctors Community Medical Ctr, Inc Lanham, MD $68 — ★ 3/5 272 min —
University of Md Baltimore Washington Medical Center Glen Burnie, MD $73 — ★ 5/5 — —
Adventist Healthcare White Oak Medical Center Silver Spring, MD $75 $76 ★ 3/5 296 min —
Adventist Healthcare Shady Grove Medical Center Rockville, MD $75 $77 ★ 2/5 204 min —
Medstar Montgomery Medical Center Olney, MD $82 $84 ★ 3/5 259 min —
University of Md Capital Region Medical Center Upper Marlboro, MD $83 — ★ 1/5 246 min —
Calverthealth Medical Center Prince Frederick, MD $85 — ★ 5/5 194 min —
Tidalhealth Peninsula Regional, Inc Salisbury, MD $85 $55 ★ 4/5 177 min —
Umd Upper Chesapeake Medical Center Bel Air, MD $89 — ★ 2/5 239 min —
Um Upper Chesapeake Behavioral Health Pavilion At Aberdeen, MD $89 — — — —
Medstar Southern Maryland Hospital Center Clinton, MD $89 $91 ★ 2/5 356 min —
Medstar Harbor Hospital Baltimore, MD $90 $92 ★ 4/5 212 min —
Atlantic General Hospital Berlin, MD $91 $91 ★ 3/5 147 min —
Medstar Good Samaritan Hospital Baltimore, MD $91 $93 ★ 3/5 247 min —
University of Md Medical Center Midtown Campus Baltimore, MD $92 — ★ 3/5 243 min —
University of Maryland Medical Center Baltimore, MD $95 — ★ 3/5 309 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)

Chargemaster (list price)
$91
Cash / self-pay
$89
Insurer-negotiated
$80
Medicare pays
$26
$59$107
Median cash $89  ·  Medicare $26  ·  bar = typical cash range (10th–90th percentile)
Is this a fair price?
1× Medicarefair ≈2×5×+

Typical cash price here is $89 — about 3.4× the Medicare rate ($26). On the higher side. A fair cash price is usually within ~2× Medicare ($52).

💡 Asking for the cash price instead of the $91 list price could save about $2 (2%).

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Rough estimate from this procedure’s median insurer-negotiated rate. Your actual cost depends on your plan — confirm with your insurer.

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