Dr. William Maloney
Contact & Location
650-723-4000
Stanford, CA 94305
About Dr. Maloney
Dr. William Maloney is a board-certified orthopedic surgeon practicing in Stanford, California. A Medicare provider since 2007, Dr. Maloney performed 33 Medicare-verified knee replacements (#230 in California) and 20 hip replacements in the latest annual CMS data, for a combined total of 53 procedures.
In California, Dr. Maloney performs below the state average in knee (33 vs 47), below the state average in hip (20 vs 41).
Dr. Maloney's reported Medicare volume is split between knee replacements (33 cases) and hip replacements (20 cases).
Stanford is home to 19 orthopedic surgeons in the current Medicare dataset. Patients in the Stanford area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. Maloney extend back to 2013, covering 12 years of data. Over that period, recorded procedure volume increased from 42 to 53 in the most recent data, a 26% increase. This sustained growth reflects an expanding joint replacement practice.
Dr. Maloney's 33 knee replacement procedures is below the national average of 45 among 6,599 surgeons. Medicare data captures roughly a third of all joint replacements, so actual volume is likely higher.
Verified Case Volume Trends (2013-Current)
| Year | Hip Replacement | Knee Replacement |
|---|---|---|
| 2013 | 19 | 23 |
| 2014 | 14 | 25 |
| 2015 | 0 | 17 |
| 2016 | 0 | 17 |
| 2017 | 16 | 25 |
| 2018 | 15 | 25 |
| 2019 | 17 | 21 |
| 2020 | 16 | 26 |
| 2021 | 22 | 41 |
| 2022 | 0 | 33 |
| 2023 | 11 | 33 |
| 2024 | 20 | 33 |
Verified Medicare Cases
How is this estimated?
Medicare Part B fee-for-service claims represent approximately 33–37% of all joint replacements performed nationally (source: CMS data, AJRR). This range estimates the surgeon's total practice volume across all payers. The verified Medicare count above is the definitive, audited figure.
How Dr. Maloney Compares
Procedure volume compared to the California state average.
Volume Trend Analysis
Dr. Maloney's Medicare-recorded procedure volume has trended upward over 12 years, increasing 26% from 42 procedures in 2013 to 53 in the most recent data.
Hospital Affiliations & Quality
Quality ratings and complication rates are hospital-level metrics from CMS Hospital Compare and do not reflect individual surgeon performance. Star ratings updated quarterly. Complication data covers a rolling 3-year period.
Patient Resources: Preparing for Knee Replacement
If you are considering knee replacement surgery, these evidence-based guides can help you prepare and recover:
An overview of current surgical approaches including robotic-assisted and minimally invasive techniques, implant options, and expected outcomes.
Prehabilitation: Preparing Your Body for SurgeryEvidence-based exercises and lifestyle adjustments that can improve surgical outcomes and speed recovery when started weeks before your procedure.
Nutrition and Recovery After Joint ReplacementHow protein intake, anti-inflammatory foods, hydration, and targeted supplements support bone healing and tissue repair after surgery.
Medicare Bundled Payment Programs for Joint ReplacementHow bundled payment models affect your joint replacement costs and care coordination, and what it means for hospital and surgeon selection.
Knee Replacement Recovery Overview
Recovery timelines vary by patient, but here is a general overview of what to expect after knee replacement surgery:
Individual recovery varies based on overall health, age, and adherence to physical therapy. View full knee replacement recovery guide and product recommendations
Frequently Asked Questions About Dr. Maloney
How does Dr. Maloney's procedure volume compare to other California surgeons?
Dr. Maloney has performed 53 Medicare-verified joint replacement procedures. The California average is 68 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Maloney ranks #257 out of 613 orthopedic surgeons in California.
What types of joint replacement does Dr. Maloney perform?
Dr. Maloney's Medicare data shows procedures in knee replacement (33 cases) and hip replacement (20 cases).
Are there other orthopedic surgeons near Dr. Maloney in Stanford?
Yes. There are 19 orthopedic surgeons in Stanford in the current Medicare dataset. Patients can compare procedure volumes and specializations to choose the surgeon who best fits their needs. Use the state page to view all California surgeons.
What does the Medicare data for Dr. Maloney represent?
The procedure counts shown are based on the most recent Medicare Part B fee-for-service claims data, published by the Centers for Medicare and Medicaid Services (CMS). This captures approximately 33–37% of all joint replacements performed nationally. Dr. Maloney's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 53 procedures shown here.
Has Dr. Maloney's procedure volume changed over time?
Yes. Dr. Maloney's Medicare-recorded volume has increased from 42 procedures in 2013 to 53 in the most recent data, a 26% increase over 12 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 63 procedures in 2021.
Does Dr. Maloney perform more than one type of joint replacement?
Yes. Dr. Maloney's Medicare data shows procedures in knee replacement (33 cases), hip replacement (20 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Maloney affiliated with?
According to CMS facility affiliation data, Dr. Maloney is affiliated with Stanford Health Care.
How does Dr. Maloney compare to other orthopedic surgeons in Stanford?
Among the 19 orthopedic surgeons in Stanford, Dr. Maloney ranks #12 by total Medicare procedure volume. The highest-volume surgeon in Stanford has 312 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Maloney practices?
Stanford Health Care (5 out of 5 CMS stars, hip/knee complication rate similar to national average). These are hospital-level quality metrics from CMS Hospital Compare and do not reflect individual surgeon outcomes.
Other Orthopedic Surgeons in Stanford, California
Dr. Maloney's 53 Medicare procedures are below the Stanford average of 153. The table below compares verified procedure volumes for orthopedic surgeons practicing in Stanford.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Robert Mayle | 312 | Hip, Knee |
| Dr. Matthew Miller | 196 | Hip, Knee |
| Dr. Bradley Crow | 183 | Hip, Knee |
| Dr. James Huddleston | 152 | Hip, Knee |
| Dr. Holly Haight | 89 | Hip, Knee |
| Dr. Emilie Cheung | 85 | Shoulder |
Patient Resources & Verification
Research reviews, verify credentials, and check official quality data through these trusted sources:
Medicare Care Compare and NPI Registry are official U.S. government sources. Google reviews reflect user-submitted feedback. OrthoProcedures.com does not verify the accuracy of third-party review content.