Sleep study (polysomnography) cost in Washington

Prices at 26 hospitals in Washington, from their machine-readable files. Here the median cash price is $2,850 — 8% below the US median ($3,100), roughly 4.1× the Medicare rate.

Lowest cash prices

HospitalLocationCashInsurerCMS ratingER waitReadmit
Confluence Health Hospital Wenatchee, WA $1,202 $1,202 ★ 3/5 143 min —
Virginia Mason Medical Center Seattle, WA $1,951 $1,651 ★ 5/5 206 min —
Deaconess Medical Center Spokane, WA $2,238 $1,735 ★ 3/5 180 min —
Multicare Valley Hospital Spokane Valley, WA $2,238 $1,870 ★ 5/5 190 min —
Multicare Auburn Medical Center Auburn, WA $2,611 $3,248 ★ 2/5 217 min —
Multicare Good Samaritan Hospital Puyallup, WA $2,611 $3,248 ★ 2/5 133 min —
Tacoma General Allenmore Hospital Tacoma, WA $2,611 $3,064 ★ 2/5 208 min —
Multicare Covington Medical Center Covington, WA $2,611 $3,248 ★ 3/5 177 min —
Mary Bridge Children's Hospital Tacoma, WA $2,611 $4,535 — — —
Peacehealth United General Medical Center Sedro Woolley, WA $2,623 — ★ 3/5 142 min —
Astria Toppenish Hospital Toppenish, WA $2,741 $1,066 — 150 min —
Capital Medical Center Olympia, WA $2,850 $2,669 ★ 3/5 140 min —
Harrison Medical Center Silverdale, WA $3,230 $802 ★ 4/5 205 min —
St Clare Hospital Lakewood, WA $3,310 $2,420 ★ 4/5 161 min —
St Anthony Hospital Gig Harbor, WA $3,492 $2,420 ★ 5/5 200 min —
St Francis Community Hospital Federal Way, WA $3,603 $2,420 ★ 4/5 202 min —
St Joseph Medical Center Tacoma, WA $3,803 $2,420 ★ 3/5 211 min —
Legacy Salmon Creek Medical Center Vancouver, WA $3,877 — ★ 4/5 260 min —
St Elizabeth Hospital Enumclaw, WA $4,057 $2,763 ★ 5/5 193 min —
Providence Mount Carmel Hospital Colville, WA $4,352 — ★ 3/5 150 min —
Peacehealth St John Medical Center Longview, WA $4,885 $1,072 ★ 4/5 214 min —
Kaiser Permanente Central Hospital Seattle, WA $5,522 — — — —
Astria Sunnyside Hospital Sunnyside, WA $8,732 $3,870 ★ 2/5 122 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)
$6,528
Cash / self-pay
$2,850
Insurer-negotiated
$2,420
Medicare pays
$691
$2,238$4,778
Median cash $2,850  ·  Medicare $691  ·  bar = typical cash range (10th–90th percentile)
Is this a fair price?
1× Medicarefair ≈2×5×+

Typical cash price here is $2,850 — about 4.1× the Medicare rate ($691). High vs Medicare. A fair cash price is usually within ~2× Medicare ($1,381).

💡 Asking for the cash price instead of the $6,528 list price could save about $3,678 (56%).

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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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Sleep study (polysomnography) cost in other states

All Sleep study (polysomnography) prices (national) → · All hospitals in Washington →