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Colonoscopy Cost in Seattle, WA (2026): Average Prices & What You'll Pay

What does a colonoscopy cost in Seattle, WA?

Where you have a colonoscopy done in Seattle, WA swings the bill from $893 to $1,366 for identical care. The median cash price across 10 reporting hospitals is $937. The numbers are pulled directly from federally mandated hospital price transparency files.

The same colonoscopy that costs $216 at KAISER PERMANENTE CENTRAL HOSPITAL reaches $3,339 at Swedish Health Services in Issaquah — a 15.5× gap across the 10 Seattle, WA hospitals reporting prices. The median Seattle, WA price is $937. Most facilities fall between $866 and $1,366. Self-pay patients are quoted more than insurers actually pay: the median cash price is $937 versus a median negotiated rate of $912. Location within the state matters too: Seattle has the lowest metro median ($1,594) while Tacoma runs highest ($1,760) — a 1.1× difference inside Seattle, WA alone.

Colonoscopy billing is more complex than most procedures — and most patients find out after the fact.

The free toolkit shows you:

  • ✓ Which 3–4 separate bills typically arrive (and which to dispute)
  • ✓ Why anesthesia is often billed out-of-network even at in-network facilities
  • ✓ The exact questions to ask before you schedule — that can cut your bill 30–50%
  • ✓ What insurance actually covers vs. what they hope you won't notice
  • ✓ A real patient billing breakdown, line by line

Free for patients — takes 30 seconds to get.

We'll email it to you immediately. No account required, no spam.

Forecast your out-of-pocket cost

How prices are distributed across Seattle, WA hospitals:
  • Lower-cost hospitals (bottom 25%): under $866
  • Median hospital: $937
  • Higher-cost hospitals (top 30%): $1,366+

That's a 2× spread for the same procedure — driven entirely by which facility you choose, not by clinical complexity.

Example — two commercially insured patients in Seattle:
  • Patient A (higher-rate plan or out-of-network): ~$1,366
  • Patient B (lower-rate in-network plan): ~$893
Same procedure. Same week. $473 difference.

Where colonoscopy costs vary in Seattle, WA

Pins show hospitals with price-transparency data (colored by vs. state average) and nearby ambulatory surgery centers, imaging centers, and other facilities (colored by type). Click any pin for facility name and estimated cost range.

Hospital (below avg) Hospital (above avg) Click a pin for details.

See every Seattle, WA hospital's price

The 5 cheapest are shown. Enter your email to reveal the rest of the map and unlock all 5 remaining facilities — instantly.

We'll email you the full Seattle, WA price list as a PDF. Sourced from CMS files. No spam.

Estimate YOUR exact out-of-pocket cost →

Cheapest Colonoscopy Providers in Seattle, WA

Based on declared cash/self-pay prices from CMS hospital price transparency files.

# Facility City Price vs Median
1 Providence Health And Services - Washington Everett, WA $808 -$129
2 Swedish Health Services Issaquah, WA $850 -$87
3 St. Joseph Medical Center Tacoma, WA $912 -$25
4 St. Elizabeth Hospital Enumclaw, WA $912 -$25
5 Harborview Medical Center Seattle, WA $962 +$25
6 Swedish Health Services Seattle, WA $1,024 +$87
7 Fred Hutchinson Cancer Center Seattle, WA $2,164 +$1,227
8 Alliance for South Sound Health Tacoma, WA $2,607 +$1,670

Prices are declared self-pay rates. Contact each facility for a formal quote before scheduling.

The facility you choose matters more than almost anything else — the same procedure, same quality, same state can cost 5× more at one hospital versus the one down the road.

→ Compare all procedure costs   → Colonoscopy costs nationwide

Check YOUR hospital's pricing → Estimate YOUR exact cost →

Worth knowing: Declared gross charges vary significantly across Seattle, WA hospitals — the same procedure can look very different on a hospital's price list versus what you actually owe. Cash and negotiated prices are a more practical guide.
Every hospital in this dataset offers a cash price — with a median of $937. If your deductible hasn't been met, always ask for the self-pay rate before scheduling.

What you'll actually pay — example scenarios

Your situation Estimated out-of-pocket
Deductible not yet met (pay in full) ~$937
Deductible met — 20% coinsurance ~$187
Out-of-network provider $2,061+

Based on the state median facility price of $937. Your actual cost depends on your plan deductible, coinsurance rate, and network tier. Get YOUR personalized estimate →

What this means for you

If you haven't met your deductible, you are effectively a cash-pay patient.

That means:

  • You should verify your hospital is in-network before an elective visit when possible
  • The cheapest facility can save you $721+ vs. the median.

This is the single biggest lever most patients have to reduce their cost.

Lower-cost options in Seattle, WA start around $866 or below. Most hospitals cluster between $866 and $1,879. A smaller group reports prices above that — often academic medical centers or high-cost markets.

If you're comparing specific hospitals, the lowest self-pay rates reported in this dataset include: Providence Health And Services - Washington in Everett (cash price from $808); Swedish Health Services in Issaquah (cash price from $850); St. Joseph Medical Center in Tacoma (cash price from $912). These are declared cash prices — contact each facility for a formal quote before scheduling.

Quick decision guide:
  • Best value hospitals (lowest prices): KAISER PERMANENTE CENTRAL HOSPITAL: $216; Providence Health And Services - Washington: $808; Swedish Health Services: $850
  • Most expensive (outpatient): Kindred Hospital Seattle - First Hill: ~$3,339; Alliance for South Sound Health: ~$2,607

→ Choosing the right facility can save $721+ vs. the state median.

Seattle, WA Colonoscopy prices by facility

All prices below come from hospital chargemasters — the official price lists each hospital must publish under federal law. Gross charge is the undiscounted list price; cash price is the self-pay rate; negotiated range covers the spread across insurance contracts.

How we calculate "Your Price" — We prioritize the most actionable price in this order:
  1. Cash price — the self-pay rate you can actually negotiate and pay
  2. Negotiated rate — if reported by the hospital across insurance contracts
  3. Gross charge — fallback only; this is the inflated list price few people pay

This reflects the real prices patients encounter — not inflated chargemaster rates.

# Facility City Your Price vs Median Gross Charge
#1 KAISER PERMANENTE CENTRAL HOSPITAL WA $216 -$721 $270–$5,953
#2 Providence Health And Services - Washington Everett, WA $808 -$129 $808–$13,908
#3 Swedish Health Services Issaquah, WA $850 -$87 $850–$17,257
#4 St. Joseph Medical Center Tacoma, WA $912 -$25 $912–$8,828
#5 St. Elizabeth Hospital Enumclaw, WA $912 -$25 $912–$8,828
#6 Harborview Medical Center Seattle, WA $962 +$25 $1,375–$9,513
#7 Swedish Health Services Seattle, WA $1,024 +$87 $1,024–$7,277
#8 Fred Hutchinson Cancer Center Seattle, WA $2,164 +$1,227 $2,405–$5,933
#9 Alliance for South Sound Health Tacoma, WA $2,607 +$1,670 $2,607–$17,026
#10 Kindred Hospital Seattle - First Hill Seattle, WA $3,339 +$2,402 $3,339–$5,251

Unlock all 5 remaining Seattle, WA hospitals

Enter your email to reveal the full table instantly — and we'll email you the complete price list as a PDF to keep.

We'll email you the full Seattle, WA price list as a PDF. Sourced from CMS files. No spam.

Source: CMS hospital price transparency machine-readable files. vs Median = savings or premium relative to the state median price. Gross Charge = undiscounted list price for reference.

Received a bill? Check it for errors → Estimate YOUR cost before you go →

Compare other procedures in Seattle, WA:

Where you can save the most on colonoscopy in Seattle, WA

These facilities have the lowest declared prices relative to the state median — they represent the best opportunities to reduce your out-of-pocket cost for this procedure.

Facility City Your Price vs Median
KAISER PERMANENTE CENTRAL HOSPITAL WA $216 -$721
Providence Health And Services - Washington Everett, WA $808 -$129
Swedish Health Services Issaquah, WA $850 -$87
St. Joseph Medical Center Tacoma, WA $912 -$25
St. Elizabeth Hospital Enumclaw, WA $912 -$25

How to choose a lower-cost facility

  • Choose independent outpatient centers when possible — freestanding ASCs (ambulatory surgical centers) consistently charge less than hospital outpatient departments for identical procedures.
  • Ask for the cash price if your deductible isn't met — self-pay rates are often lower than what insurance pays before your deductible is satisfied, especially at facilities that have a high cash-price discount.
  • Avoid hospital outpatient departments for routine cases — hospital-owned locations add a facility fee that freestanding centers don't charge, often adding $500–$1,500 to the same procedure.
Important: Many procedures are done at ambulatory surgical centers (ASCs) that are often 30–60% cheaper than hospital outpatient departments with the same clinical quality. Most ASCs are not in this hospital dataset — meaning your cheapest option may not even appear here. Ask your doctor if the procedure can be done at a freestanding ASC.

Most expensive colonoscopy providers in Seattle, WA

These facilities report the highest prices for this procedure. Academic medical centers and specialty hospitals often top this list — their gross charges rarely reflect what anyone actually pays, but understanding the spread helps you negotiate.

Facility City Price vs Median
Kindred Hospital Seattle - First Hill Seattle, WA $3,339 +$2,402
Alliance for South Sound Health Tacoma, WA $2,607 +$1,670
Fred Hutchinson Cancer Center Seattle, WA $2,164 +$1,227
Swedish Health Services Seattle, WA $1,024 +$87
Harborview Medical Center Seattle, WA $962 +$25

Why prices vary this much

Setting drives much of the gap in Seattle, WA: the median outpatient price is $937 versus $1,563 inpatient — about 1.7× more, so where a procedure is performed often matters more than which hospital you choose. Of the Seattle, WA facilities reporting prices, 3 fall in a low-cost tier (up to $866) while 3 sit in a high-cost tier ($1,879 and up) — a lower-priced option almost always exists within the same state.

The spread comes from how each hospital sets its chargemaster (the undiscounted list price), what cash discounts it applies, and what rates it negotiates with each insurer. Facility classification matters too — a hospital-owned outpatient center adds a facility fee that a freestanding clinic does not. Understanding these mechanics is the first step to paying less.

Learn more:
→ Allowed amount vs negotiated rate — what your EOB is really saying
→ How to read your medical bill
→ Why hospital prices are so hard to find — and what to do about it

How insurance changes what you actually pay

Hospital list prices are only part of the picture. What you pay out of pocket depends on your deductible, your plan's out-of-pocket maximum, whether the facility is in-network, and whether your plan classifies the visit as outpatient or inpatient. A lower gross charge doesn't guarantee a lower bill if the facility is out-of-network or adds facility fees your plan doesn't cover.

Understand your cost before you go:
→ Deductible vs out-of-pocket max
→ EOB vs medical bill — complete guide
→ How to stop medical bill problems before they start (in-network vs out-of-network)

Compare colonoscopy costs in nearby states

Frequently asked questions: colonoscopy costs in Seattle, WA

How much does a colonoscopy cost in Seattle, WA?

Across 10 Seattle, WA hospitals that publish prices, a colonoscopy ranges from $216 to $3,339, with a median of $937. Most facilities fall between $866 and $1,366. What you pay depends on the facility, your insurance, and whether you have met your deductible.

Where is the cheapest place to get a colonoscopy in Seattle, WA?

Based on declared prices, the lowest-cost facility in our Seattle, WA data is KAISER PERMANENTE CENTRAL HOSPITAL at about $216. By metro, Seattle has the lowest median ($1,594). Freestanding ambulatory surgery and imaging centers are often cheaper still and may not appear in hospital price data — ask your doctor whether one is an option.

Why is a colonoscopy so much cheaper at some Seattle, WA hospitals?

Prices vary up to 15.5× because each hospital sets its own list price, cash discount, and insurer-negotiated rates. In Seattle, WA, the median cash (self-pay) price is $937 versus a median negotiated rate of $912 — about 1× higher. Asking for the cash price or your insurer's negotiated rate is often the single biggest lever on what you pay.

How much will I actually pay out of pocket for a colonoscopy in Seattle, WA?

Your out-of-pocket cost depends on your deductible, coinsurance, out-of-pocket maximum, and whether the facility is in-network — not just the sticker price. If you have not met your deductible, you will typically pay the negotiated rate in full until you do. Use the CostKits cost forecaster to estimate your specific out-of-pocket amount before you go.

Explore all colonoscopy cost data

→ See colonoscopy costs across all states

Where You Get a Colonoscopy Matters

Hospital outpatient departments typically charge 2–4× more than ASCs or independent centers for the same procedure — same outcome, very different bill.

Hospital Outpatient Department

Hospital Outpatient Department typically carries a higher price for a colonoscopy. Facility fee billed separately from professional fee. Provider-based billing adds facility overhead. You can shop here — call ahead and ask for a self-pay or cash quote.

Ambulatory Surgery Center

Ambulatory Surgery Center typically carries a mid-range price for a colonoscopy. Typically 40–60% less than hospital OP for surgical procedures. Anesthesia billed separately. You can shop here — call ahead and ask for a self-pay or cash quote.

What's Actually on Your Colonoscopy Bill

A colonoscopy involves multiple providers — each bills separately. Understanding each line item helps you verify your Explanation of Benefits and catch billing errors.

Hospital Outpatient

  • Facility Fee
  • Gastroenterologist Fee
  • Anesthesia — Anesthesiologist bills separately. Common source of surprise bills.
  • Pathology (if biopsy) (conditional) — CPT 88305 for polyp specimen. Add only for 45380, 45381, 45385 — not for diagnostic 45378.

Asc

  • ASC Facility Fee — Medicare ASC rate is ~$510 diagnostic, ~$657 therapeutic — approximately 46% less than OPPS at facility level.
  • Gastroenterologist Fee
  • Anesthesia
  • Pathology (if biopsy) (conditional)

Colonoscopy Cost by Type

Which type your doctor orders changes the billing code — and what you pay. Here's how the common types differ.

Screening Colonoscopy

Billed as preventive care — often covered at $0 under the ACA when you are average-risk and in-network. Diagnostic only — no biopsy or polypectomy. ACA-covered at $0 for average-risk adults 45+.

Diagnostic Colonoscopy

Ordered to investigate symptoms or a prior finding — standard cost-sharing (deductible, coinsurance) applies. Same CPT as screening but billed as diagnostic — cost-sharing applies.

Colonoscopy with Biopsy

Adds a therapeutic step during the procedure, which changes the billing code and can add pathology charges.

Colonoscopy with Polypectomy

Adds a therapeutic step during the procedure, which changes the billing code and can add pathology charges.

Colonoscopy with Submucosal Injection

Adds a therapeutic step during the procedure, which changes the billing code and can add pathology charges.

Covered at $0 — But Only If It Stays a Screening

Under the ACA (§2713), preventive services — including colonoscopy for average-risk adults — must be covered at $0 with no cost-sharing when performed by an in-network provider.

The risk: Screening colonoscopy is covered at $0 under the ACA. If polyps are removed during the same procedure, it converts to a diagnostic colonoscopy and cost-sharing applies.

This Procedure Is Shoppable — Choosing the Right Facility Can Save Thousands

Colonoscopy is elective and schedulable. You have time to compare facilities — and hospital outpatient prices often run 2–4× higher than Hospital OP, ASC for identical clinical outcomes.

How to shop: Ask your doctor for the CPT code, then call 2–3 facilities and request an out-of-pocket cost estimate. Confirm your insurance is accepted. If uninsured, ask for the cash-pay rate — it's usually 20–50% below the list price.

Watch for Separate Bills from These Providers

A colonoscopy involves multiple providers: the facility, the operating physician, and often Anesthesia, Pathology (if biopsy). These providers bill independently — and each one may or may not be in your network, even if the facility is.

Action step: Before your procedure, ask the facility coordinator to confirm that all participating providers are in-network on your plan. The No Surprises Act (2022) protects you from unexpected out-of-network bills in many scenarios — but not all. Request a Good Faith Estimate (GFE) if you ask for one.

Who performs this: Colonoscopy is typically performed by a Gastroenterology or Colorectal Surgery. The specialist's professional fee is billed separately from the facility charge — you will likely receive separate bills from each.

CostKits compiles hospital price transparency data to help families make informed decisions. If you've received a bill for this procedure:
→ Analyze your medical bill for errors
→ How to negotiate your medical bills
→ Track and manage your healthcare costs (free account)

Colonoscopy billing is more complex than most procedures — and most patients find out after the fact.

The free toolkit shows you:

  • ✓ Which 3–4 separate bills typically arrive (and which to dispute)
  • ✓ Why anesthesia is often billed out-of-network even at in-network facilities
  • ✓ The exact questions to ask before you schedule — that can cut your bill 30–50%
  • ✓ What insurance actually covers vs. what they hope you won't notice
  • ✓ A real patient billing breakdown, line by line

Free for patients — takes 30 seconds to get.

We'll email it to you immediately. No account required, no spam.

Other Procedure Costs in Seattle, WA

Interested in understanding healthcare costs and managing your medical expenses?

About the Author

John Caruso, FSA, MAAA

Healthcare actuary with 20+ years of experience in insurance pricing, medical billing systems, and healthcare cost analytics.

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Published June 12, 2026

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