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CMS Price Transparency Data Hospital file updated: 2026-04-01

Hip or knee replacement (inpatient stay)

Facility: Wellstar Cobb Medical Center

Billing Code: 470 (MS-DRG)

Pillar 1 · The BaseRate™ CompositeHow 1.00× Fair BaseRate Works: Raw price averages unfairly penalize hospitals in high-wage cities or trauma centers treating sicker patients. We adjust for local CMS hospital wage levels and patient complexity first. A 1.00× score means right at the fair price average, 0.85× means 15% cheaper than fair market, and 1.30× means 30% above fair market.Good Deal · Below Fair Market
$24,852Fair BaseRate (0.86× Market)
Position vs. 1.00× Fair Price14% Below Fair Price 1.00× (center of the bar) is the U.S. fair price average after accounting for local hospital wages and patient complexity. Left of center (<1.00×) is below fair price; right of center (>1.00×) is above fair price.

This hospital's typical commercial price is $21,327 compared to the $24,852 fair price benchmark.

Pillar 2 · VeriRate™ Data TrustHow VeriRate™ (0–100) Works: Hospitals are legally required to publish machine-readable price files, but some bury fake $0.01 numbers or omit cash discounts. VeriRate audits each file across 5 checks (hover any badge below to see what it tests).86/100 · Verified
86/100Hover Any Check Below to See How Prices Were Audited
File Completeness90Provenance (File Completeness): Checks whether the hospital published a complete, up-to-date machine-readable price file with valid CPT and MS-DRG billing codes instead of leaving blanks.
Price Logic88Coherence (Price Logic): Checks whether the hospital’s numbers make basic sense — e.g., self-pay cash price is lower than gross list price, with no fake $0.01 or $999,999 placeholder numbers.
Peer Alignment86Concordance (Peer Alignment): Checks whether reported prices sit in a realistic range compared to Medicare and nearby hospitals rather than wild 100× unit errors.
Clean Billing83Regularity (Clean Billing): Checks whether rates are structured consistently across procedures without erratic statistical spikes or hidden unbundled facility fees.
Real Cash Discount84Cash Honesty (Real Cash Discount): Checks whether the hospital offers a genuine self-pay cash discount that beats or matches commercial insurance rates instead of billing full sticker price.
Pillar 3 · Clinical Quality & ER SpeedChecks whether higher hospital prices actually buy better clinical quality — combining CMS Star Ratings, hospital safety scores, and emergency room wait times.Regional Quality Benchmark
CMS Star Rating3/5 StarsOfficial CMS Overall Hospital Quality Star Rating (1 to 5 stars) summarizing mortality, safety of care, readmissions, and patient experience.
Safety Score60/100Composite patient safety score (0–100) derived from CMS hospital-acquired infection rates (CLABSI, CAUTI, MRSA, C. diff), surgical complications, and HCAHPS surveys.
Typical ER WaitNo ER DataMedian minutes patients spent in the emergency department before leaving from the visit, as reported to CMS Timely and Effective Care.

3-Star CMS clinical quality rating paired with 0.86× fair market pricing.

The BaseRate · fair price high confidence
A fair price for this
$24,852
about 1.8× the $14,044 Medicare rate · typically $15,824–$31,041
modeled estimate · not a bill or quote
What this hospital charges insurers
$21,327
Below the fair price — a good deal
about $3,525 under the fair price · 1.5× Medicare
Medicare pays $14,044 Fair price $24,852 This hospital $21,327

How we calculate the fair BaseRate →

How this hospital compares to other GA hospitals

Highest price of the 9 GA hospitals we have prices for — worth calling around.

Cheapest $12,743 Priciest $21,327

Black dot = this hospital, among the 9 GA hospitals with a price for this procedure. Full list below.

A fair price for a Hip or knee replacement (inpatient stay) is about $24,852 (about 1.8× the $14,044 Medicare rate). Wellstar Cobb Medical Center charges insurers about $21,327 — below the fair price — a good deal. Located in Austell, GA.

What each insurance company pays

Which insurers have negotiated a price with this hospital for this procedure — and which haven’t.

5 of 6 major insurers have a published price at this hospital

UnitedHealthcareBlue Cross Blue ShieldAetnaCignaHumana Kaiser Permanente

Crossed out = this hospital hasn’t published a negotiated price for that insurer for this procedure. It doesn’t necessarily mean they aren’t accepted — ask your insurer.

Insurance company Price range vs. Medicare
UnitedHealthcaremajor $19,932 - $52,883 142%
Blue Cross Blue Shieldmajor $20,331 - $66,157 145%
Aetnamajor $19,932 - $52,268 142%
Cignamajor $19,932 - $75,616 142%
Humanamajor $20,331 145%
Ambetter (Centene) $35,081 250%
CareSource $21,327 - $39,067 152%
Clover Health $21,327 152%
Oscar Health $36,875 263%
WellCare $20,929 149%
+ 4 smaller / regional plans $20,929 - $36,875

Self-Pay How to get the cash price

Insurance Before you use insurance

Estimate your out-of-pocket cost

A rough estimate of what you’d pay with insurance (deductible + coinsurance) versus paying the cash price yourself.

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Facility Profile & Credentials

  • Address: 3950 Austell Rd, Austell, GA 30106
  • CMS Rating: 3 / 5 Stars
  • Ownership Type: Voluntary non-profit - Other
  • Hospital Type: Acute Care Hospitals

Other Procedures at Wellstar Cobb Medical Center

Compare: Hip or knee replacement (inpatient stay) at other GA hospitals

Insurance negotiated median for the same procedure, sorted lowest first.

Inline Bill X-Ray & 501(r) Calculator 501(c)(3) Nonprofit · Free Care ≤200% FPL · AGB Cap 36.3%

Audit a Bill or Quote at Wellstar Cobb Medical Center (Zero PHI Required)

CMS CCN: 110143
MS-DRG 470
Fair BaseRate™ $24,852
Medicare Rate $14,044
Self-Pay Cash Request Quote
Insurer Median $21,327
Pre-filled with Wellstar Cobb Medical Center’s charged/list benchmark
Screened against 2026 HHS Federal Poverty Guidelines
2026 FPL: $15,650 + $5,500 per additional person
Step 1 · 501(r) Charity Care Check 501(r) AGB Cap: $18,580 (274% FPL)

Statutory 501(r) AGB Cap Limits Bill to $18,580

At 274% FPL (201%–400% FPL tier), 26 U.S.C. § 501(r)(5) caps FAP-eligible bills at Amounts Generally Billed (36.3% of gross = $18,580).

Step 2 · Cash vs. Insurance Arbitrage Request Prompt-Pay Quote

Compare Prompt-Pay Cash Rate Against Remaining Deductible

Ask Wellstar Cobb Medical Center's billing desk for their written 45 CFR § 180 discounted self-pay cash price and Good Faith Estimate under the No Surprises Act.

Step 3 · Fair BaseRate Target +$26,333 Above Fair BaseRate

Negotiate Toward $24,852 Fair BaseRate ($14,044 Medicare)

Your bill ($51,185) is $26,333 above the denoised Fair BaseRate ($24,852) and 3.6× the $14,044 Medicare rate.

1-Click Factual Dispute Summary: Copy a citation-backed benchmark memo (with CMS CCN, MS-DRG code, Medicare reference, Fair BaseRate, and 26 U.S.C. § 501(r) calculations) to paste into patient-portal messages or billing appeals.
CMS Care Compare Public Quality Record

Clinical Quality, Patient Experience & Infection Benchmarks

CMS Overall3/5 Stars (3/5)

Source: CMS Hospital Care Compare. Clinical quality metrics summarize historical facility-wide cohorts and are not medical advice for individual care decisions.

Care-Setting Arbitrage, Bilateral SVD Insurer Leverage & Regional Alternatives

How to Pay Less Nearby: Freestanding Centers, Insurer Leverage & Outpatient Savings

45 CFR § 180 Primary-Source Lineage & Federal Verification Verified CMS CCN 110143

Verify the Raw Data: Official Hospital MRF, CMS Medicare.gov & Federal Filings

MRF Portal Indexed (wellstar-cobb-hospital_standard-charges) Verify on CMS Medicare.gov (CCN 110143) ↗ CMS HCRIS Cost Reports ↗
Published MRF Filewellstar-cobb-hospital_standard-charges
Publication / Vintage2026-04-01 · 53.50 MB
Validated Rate Rows163,091 (CMS v3.0.0)
File Integrity Digest3a2779fe24435fc5273c…

Safe-Harbor Data Corrections: Parsed directly from public 45 CFR § 180 hospital filings, CMS Care Compare, and CMS HCRIS cost reports. Hospital compliance officers may submit updated MRF URLs or rate tables for verification.

Submit MRF Update Correction Policy