JOHN MUIR MEDICAL CENTER - WALNUT CREEK CAMPUS
WALNUT CREEK, CA 94598 · Acute Care Hospitals
147 procedures with CMS pricing data · Source: CMS IPPS Provider Summary, FY2024
By BillRazor Research · Last updated March 26, 2026 · Methodology
Procedures Analyzed
147
With CMS pricing data
Avg Charge-to-Medicare Ratio
10.5x
Chargemaster ÷ Medicare
CMS Quality Rating
Patient experience & outcomes
Hospital Type
Acute Care Hospitals
Voluntary non-profit - Other
Above 90th Percentile
90%
Compared to CA hospitals
Understanding Your Costs
When you receive a bill from JOHN MUIR MEDICAL CENTER - WALNUT CREEK CAMPUS, you are typically seeing the hospital's “chargemaster” rate — its published list price for each service. According to CMS data, JOHN MUIR MEDICAL CENTER - WALNUT CREEK CAMPUS lists chargemaster rates that average 10.5x the corresponding Medicare reimbursement amount across 147 procedures with publicly available pricing data (Source: CMS IPPS Provider Summary, FY2024).
The median hospital in CA has a chargemaster-to-Medicare ratio of 6.3x, with ratios across the state ranging from 1.7x to 17.6x. At 10.5x, this facility’s average ratio is above the state median. 273 hospitals in CA report pricing data to CMS (Source: CMS IPPS Provider Summary).
The procedure with the largest gap between the listed price and Medicare reimbursement at JOHN MUIR MEDICAL CENTER - WALNUT CREEK CAMPUS is UTERINE AND ADNEXA PROCEDURES FOR NON-MALIGNANCY WITHOUT CC/MCC (DRG 743). The listed chargemaster rate is $158,885, while Medicare reimburses $10,203 for the same procedure — a ratio of 15.6x (Source: CMS IPPS Provider Summary, FY2024).
What does this actually mean for your bill? Chargemaster rates are rarely what patients pay. If you have insurance, your insurer has negotiated a separate rate — often 40–60% less than the listed price. If you are uninsured, you may be able to negotiate directly with the hospital or request financial assistance. The chargemaster-to-Medicare ratio is a useful reference point for understanding listed pricing, but it does not represent what most patients will owe out of pocket.
132 of 147 procedures (90%) at this facility have listed rates above the 90th percentile compared to other CA hospitals reporting the same procedure data to CMS (Source: CMS IPPS Provider Summary).
JOHN MUIR MEDICAL CENTER - WALNUT CREEK CAMPUS is a voluntary non-profit - other acute care hospitals facility with a CMS quality rating of 3/5 stars. Note: CMS quality ratings measure patient outcomes and experience, not pricing. A hospital with high listed prices may provide excellent care, and pricing data alone should not be used to evaluate the quality of a healthcare provider.
Listed Chargemaster Rates vs Medicare Reimbursement — Top Procedures by Ratio
Source: CMS IPPS Provider Summary, FY2024. Chargemaster rates are list prices and may not reflect actual patient costs.
Procedure Pricing Lookup
Search for a specific procedure or DRG code to see listed chargemaster rates and Medicare reimbursement amounts.
| Procedure | DRG | Listed Charge | Medicare Reimb. | Ratio | State Position | |
|---|---|---|---|---|---|---|
| UTERINE AND ADNEXA PROCEDURES FOR NON-MALIGNANCY WITHOUT CC/MCC | 743 | $158,885 | $10,203 | 15.6x | 1th | Compare your bill |
| NONSPECIFIC CEREBROVASCULAR DISORDERS WITH MCC | 070 | $247,198 | $15,875 | 15.6x | 1th | Compare your bill |
| CARDIAC ARRHYTHMIA AND CONDUCTION DISORDERS WITHOUT CC/MCC | 310 | $64,973 | $4,177 | 15.6x | 1th | Compare your bill |
| OTHER SKIN, SUBCUTANEOUS TISSUE AND BREAST PROCEDURES WITH CC | 580 | $239,076 | $16,977 | 14.1x | 1th | Compare your bill |
| DISORDERS OF PANCREAS EXCEPT MALIGNANCY WITH CC | 439 | $110,308 | $7,848 | 14.1x | 1th | Compare your bill |
| LAPAROSCOPIC CHOLECYSTECTOMY WITHOUT C.D.E. WITHOUT CC/MCC | 419 | $163,862 | $11,679 | 14.0x | 1th | Compare your bill |
| INTRACRANIAL HEMORRHAGE OR CEREBRAL INFARCTION WITH CC OR TPA IN 24 HOURS | 065 | $125,232 | $9,082 | 13.8x | 1th | Compare your bill |
| INTRACRANIAL HEMORRHAGE OR CEREBRAL INFARCTION WITHOUT CC/MCC | 066 | $81,321 | $5,905 | 13.8x | 1th | Compare your bill |
| ISCHEMIC STROKE, PRECEREBRAL OCCLUSION OR TRANSIENT ISCHEMIA WITH THROMBOLYTIC AGENT WIT | 062 | $261,056 | $19,197 | 13.6x | 1th | Compare your bill |
| CHEMOTHERAPY WITHOUT ACUTE LEUKEMIA AS SECONDARY DIAGNOSIS WITH CC | 847 | $171,190 | $12,678 | 13.5x | 1th | Compare your bill |
| SIGNS AND SYMPTOMS WITHOUT MCC | 948 | $93,142 | $6,912 | 13.5x | 1th | Compare your bill |
| FRACTURES OF HIP AND PELVIS WITH MCC | 535 | $175,378 | $13,218 | 13.3x | 1th | Compare your bill |
| BACK AND NECK PROCEDURES EXCEPT SPINAL FUSION WITHOUT CC/MCC | 520 | $179,667 | $13,551 | 13.3x | 1th | Compare your bill |
| SYNCOPE AND COLLAPSE | 312 | $106,160 | $8,016 | 13.2x | 1th | Compare your bill |
| PULMONARY EDEMA AND RESPIRATORY FAILURE | 189 | $153,199 | $11,647 | 13.2x | 1th | Compare your bill |
| FRACTURE, SPRAIN, STRAIN AND DISLOCATION EXCEPT FEMUR, HIP, PELVIS AND THIGH WITHOUT MCC | 563 | $85,927 | $6,552 | 13.1x | 1th | Compare your bill |
| NERVOUS SYSTEM NEOPLASMS WITH MCC | 054 | $262,896 | $20,069 | 13.1x | 1th | Compare your bill |
| OTHER DISORDERS OF NERVOUS SYSTEM WITH CC | 092 | $121,443 | $9,482 | 12.8x | 1th | Compare your bill |
| CARDIAC ARRHYTHMIA AND CONDUCTION DISORDERS WITH CC | 309 | $85,633 | $6,719 | 12.7x | 1th | Compare your bill |
| CHRONIC OBSTRUCTIVE PULMONARY DISEASE WITH CC | 191 | $97,509 | $7,669 | 12.7x | 1th | Compare your bill |
| LYMPHOMA AND NON-ACUTE LEUKEMIA WITH CC | 841 | $187,235 | $15,061 | 12.4x | 1th | Compare your bill |
| DIABETES WITH MCC | 637 | $177,860 | $14,460 | 12.3x | 1th | Compare your bill |
| ACUTE MYOCARDIAL INFARCTION, DISCHARGED ALIVE WITH CC | 281 | $99,715 | $8,185 | 12.2x | 1th | Compare your bill |
| ESOPHAGITIS, GASTROENTERITIS AND MISCELLANEOUS DIGESTIVE DISORDERS WITHOUT MCC | 392 | $89,779 | $7,401 | 12.1x | 1th | Compare your bill |
| OTHER MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE O.R. PROCEDURES WITHOUT CC/MCC | 517 | $165,990 | $13,773 | 12.1x | 1th | Compare your bill |
| BACK AND NECK PROCEDURES EXCEPT SPINAL FUSION WITH CC | 519 | $246,355 | $20,462 | 12.0x | 1th | Compare your bill |
| TRANSIENT ISCHEMIA WITHOUT THROMBOLYTIC | 069 | $86,618 | $7,256 | 11.9x | 1th | Compare your bill |
| OTHER DISORDERS OF NERVOUS SYSTEM WITH MCC | 091 | $180,252 | $15,279 | 11.8x | 1th | Compare your bill |
| MISCELLANEOUS DISORDERS OF NUTRITION, METABOLISM, FLUIDS AND ELECTROLYTES WITH MCC | 640 | $177,973 | $15,109 | 11.8x | 1th | Compare your bill |
| ESOPHAGITIS, GASTROENTERITIS AND MISCELLANEOUS DIGESTIVE DISORDERS WITH MCC | 391 | $158,650 | $13,533 | 11.7x | 1th | Compare your bill |
| MISCELLANEOUS DISORDERS OF NUTRITION, METABOLISM, FLUIDS AND ELECTROLYTES WITHOUT MCC | 641 | $89,016 | $7,611 | 11.7x | 1th | Compare your bill |
| MAJOR SMALL AND LARGE BOWEL PROCEDURES WITHOUT CC/MCC | 331 | $197,869 | $16,921 | 11.7x | 1th | Compare your bill |
| ACUTE MYOCARDIAL INFARCTION, DISCHARGED ALIVE WITH MCC | 280 | $185,395 | $15,891 | 11.7x | 1th | Compare your bill |
| INFECTIOUS AND PARASITIC DISEASES WITH O.R. PROCEDURES WITH CC | 854 | $238,521 | $20,501 | 11.6x | 1th | Compare your bill |
| SEIZURES WITHOUT MCC | 101 | $97,220 | $8,360 | 11.6x | 1th | Compare your bill |
| SIMPLE PNEUMONIA AND PLEURISY WITH MCC | 193 | $144,166 | $12,403 | 11.6x | 1th | Compare your bill |
| LAPAROSCOPIC CHOLECYSTECTOMY WITHOUT C.D.E. WITH CC | 418 | $183,727 | $15,828 | 11.6x | 1th | Compare your bill |
| CRANIOTOMY AND ENDOVASCULAR INTRACRANIAL PROCEDURES WITH CC | 026 | $460,506 | $39,878 | 11.6x | 1th | Compare your bill |
| OTHER DIGESTIVE SYSTEM DIAGNOSES WITH CC | 394 | $98,383 | $8,547 | 11.5x | 1th | Compare your bill |
| MAJOR SMALL AND LARGE BOWEL PROCEDURES WITH CC | 330 | $262,374 | $22,922 | 11.4x | 1th | Compare your bill |
| POSTOPERATIVE AND POST-TRAUMATIC INFECTIONS WITHOUT MCC | 863 | $110,839 | $9,737 | 11.4x | 1th | Compare your bill |
| KIDNEY AND URINARY TRACT INFECTIONS WITHOUT MCC | 690 | $81,127 | $7,160 | 11.3x | 1th | Compare your bill |
| MALIGNANCY OF HEPATOBILIARY SYSTEM OR PANCREAS WITH MCC | 435 | $206,119 | $18,187 | 11.3x | 1th | Compare your bill |
| CHRONIC OBSTRUCTIVE PULMONARY DISEASE WITH MCC | 190 | $111,897 | $9,888 | 11.3x | 1th | Compare your bill |
| LAPAROSCOPIC CHOLECYSTECTOMY WITHOUT C.D.E. WITH MCC | 417 | $279,419 | $24,706 | 11.3x | 1th | Compare your bill |
| OTHER FACTORS INFLUENCING HEALTH STATUS | 951 | $59,588 | $5,316 | 11.2x | 1th | Compare your bill |
| GASTROINTESTINAL OBSTRUCTION WITHOUT CC/MCC | 390 | $53,572 | $4,789 | 11.2x | 1th | Compare your bill |
| OTHER KIDNEY AND URINARY TRACT DIAGNOSES WITH MCC | 698 | $194,788 | $17,420 | 11.2x | 1th | Compare your bill |
| PULMONARY EMBOLISM WITHOUT MCC | 176 | $85,023 | $7,659 | 11.1x | 1th | Compare your bill |
| CRANIAL AND PERIPHERAL NERVE DISORDERS WITHOUT MCC | 074 | $110,028 | $9,970 | 11.0x | 1th | Compare your bill |
Showing 50 of 147 procedures
All data from CMS IPPS Provider Summary, FY2024. Chargemaster rates are list prices and may not reflect actual patient costs.
Statewide Context
Charge-to-Medicare ratio range across CA hospitals
273 hospitals in CA report pricing data to CMS. This facility's average ratio of 10.5x places it at the upper-middle range of the state range (Source: CMS IPPS Provider Summary).
What You Can Do
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How it worksData: CMS Inpatient Prospective Payment System (IPPS) Provider Summary, FY2024. All data is publicly available under federal law (45 CFR Part 180).
Important: Listed chargemaster rates are not what most insured patients pay. Actual costs depend on your insurance plan's negotiated rates, deductibles, and coverage terms. This information is for educational purposes only and does not constitute medical, legal, or financial advice.
Frequently Asked Questions About JOHN MUIR MEDICAL CENTER - WALNUT CREEK CAMPUS
How much does JOHN MUIR MEDICAL CENTER - WALNUT CREEK CAMPUS charge compared to Medicare?
According to CMS IPPS data, JOHN MUIR MEDICAL CENTER - WALNUT CREEK CAMPUS's listed chargemaster rates average 10.5x the Medicare reimbursement amount across 147 procedures. Chargemaster rates are list prices and are not what most insured patients pay — actual costs depend on insurance negotiations and coverage terms.
What is the most expensive procedure at JOHN MUIR MEDICAL CENTER - WALNUT CREEK CAMPUS?
The procedure with the highest chargemaster-to-Medicare ratio at JOHN MUIR MEDICAL CENTER - WALNUT CREEK CAMPUS is UTERINE AND ADNEXA PROCEDURES FOR NON-MALIGNANCY WITHOUT CC/MCC (DRG 743), with a listed charge of $158,885 compared to Medicare reimbursement of $10,203 — a ratio of 15.6x. Source: CMS IPPS Provider Summary.
Is JOHN MUIR MEDICAL CENTER - WALNUT CREEK CAMPUS expensive compared to other CA hospitals?
JOHN MUIR MEDICAL CENTER - WALNUT CREEK CAMPUS's average chargemaster-to-Medicare ratio is 10.5x. Ratios vary significantly across CA hospitals. This ratio reflects listed chargemaster prices, not what patients actually pay. CMS quality ratings, which measure patient outcomes and experience, are separate from pricing data.
Where does the pricing data for JOHN MUIR MEDICAL CENTER - WALNUT CREEK CAMPUS come from?
All pricing data comes from the Centers for Medicare & Medicaid Services (CMS) Inpatient Prospective Payment System (IPPS) Provider Summary, published under federal price transparency law (45 CFR Part 180). This data is publicly available and updated annually.
How can I check if my bill from JOHN MUIR MEDICAL CENTER - WALNUT CREEK CAMPUS is correct?
You can upload your bill to BillRazor for a free comparison against publicly available Medicare reimbursement data. Our system analyzes every line item in 60 seconds. Research suggests 49-80% of hospital bills contain errors, including duplicate charges, incorrect procedure codes, and unbundling.
Does JOHN MUIR MEDICAL CENTER - WALNUT CREEK CAMPUS in WALNUT CREEK, CA accept Medicare?
JOHN MUIR MEDICAL CENTER - WALNUT CREEK CAMPUS is included in the CMS IPPS Provider Summary, which covers Medicare-participating hospitals. For specific coverage questions, contact JOHN MUIR MEDICAL CENTER - WALNUT CREEK CAMPUS directly or check with your insurance provider.
Data sourced from CMS IPPS Provider Summary, FY2024. All information is for educational purposes only.