John Muir Health Walnut Creek Medical Center Pricing Analysis
Source: Hospital MRF file & CMS Medicare PFS 2026
F
Most Expensive
452x
the federal fair-price benchmark
4,173
92 comparable to federal rates
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Biggest Overcharges at This Hospital
These are the procedures where John Muir Health Walnut Creek Medical Centercharges the most compared to the federal fair-price benchmark. “They Charge” is what appears on your bill. “Gov. Benchmark” is what the government determines the doctor's work is worth.
| Procedure | Code | They Charge | Gov. Benchmark | You Overpay |
|---|---|---|---|---|
| HC Ccl Fluoro Guide Cvad S&I|DISTINCT PROCEDURAL SERVICE | 77001 | $23,731 | $99 | +$23,632 |
| HC Stnt/Ptca Maj Art/Brch|RIGHT CORONARY ARTERY | 92928 | $51,020 | $464 | +$50,556 |
| Implnt Bio Implnt for Soft Tissue Reinforcement | 15777 | $51,020 | $224 | +$50,796 |
| Lab Bone Marrow Stain | 85097 | $10,117 | $68 | +$10,049 |
| HC Punch Bx Skin Single Lesionpunch Bx Skin Single Lesion | 11104 | $14,704 | $121 | +$14,583 |
| Arthroscopy Ankle Surgical Debridement Extensive | 29898 | $34,008 | $524 | +$33,484 |
| HC Ep Rmv Lead Icd Trnsven | 33244 | $81,617 | $767 | +$80,850 |
| HC Biopsy of Vagina,Simple [57100] | 57100 | $17,004 | $105 | +$16,899 |
| Biopsy Urethra | 53200 | $27,205 | $166 | +$27,039 |
| HC Other Implant Supplies Cpt Q4186 | Q4186 | $12,000 | $127 | +$11,873 |
| Urtt/Urts Xtrnl Spx Pendulous Urethra | 53000 | $27,205 | $139 | +$27,066 |
| HC US Breast Loc Plmt Mrk Ea Add Les|DISTINCT PROCEDURAL SERVICE|LEFT SIDE | 19286 | $40,826 | $287 | +$40,539 |
| Rmvl Foreign Body Muscle/Tendon Sheath Deep/Comp | 20525 | $51,020 | $497 | +$50,523 |
| Bronchoscopy W/Transbronchial Lung Bx 1 Lobe|BILATERAL PROCEDURE | 31628 | $34,008 | $408 | +$33,600 |
| HC Gross & Micro Level V|DISTINCT PROCEDURAL SERVICE|CCI | 88307 | $40,826 | $278 | +$40,548 |
| Destruction Vaginal Lesions Simple | 57061 | $27,205 | $163 | +$27,042 |
| Pnxr Aspir Hydrocele Tunica Vagis W/WO Njx Med | 55000 | $36,347 | $126 | +$36,221 |
| Tympanostomy General Anesthesia|LEFT SIDE | 69436 | $20,413 | $145 | +$20,268 |
| Nasal/Sinus Ndsc W/Total Ethoidectomy|BILATERAL PROCEDURE | 31255 | $34,008 | $273 | +$33,735 |
| Lab Cytopathology, Smears, Any Other Source; Screening and Interpretation|DISTINCT PROCEDURAL SERVICE | 88160 | $20,413 | $82 | +$20,332 |
About John Muir Health Walnut Creek Medical Center Pricing
John Muir Health Walnut Creek Medical Center in , CA charges 452x or more above the government benchmark — among the most expensive across 92procedures we could compare. This data comes directly from the hospital's own published price file — they're required by federal law to share it.
What this means for your bill
If you're uninsured, out-of-network, or have a high-deductible plan, these prices directly affect what you pay. If you have in-network insurance, your insurer has likely negotiated much lower rates — but you may still owe a percentage of the hospital's high list price for your coinsurance or deductible.
Can I negotiate?
Yes. Most hospitals will reduce bills when patients present evidence. Our bill checker compares your specific charges to fair-price benchmarks and generates a dispute letter you can send to the billing department.
Compare with other hospitals
See how John Muir Health Walnut Creek Medical Center stacks up against other hospitals in the area.
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