Dr. Guy Guilfoy, MD
Contact & Location
916-983-2307
Folsom, CA 95630
About Dr. Guilfoy
Dr. Guy Guilfoy is a board-certified orthopedic surgeon practicing in Folsom, California. A Medicare provider since 2006, Dr. Guilfoy completed 26 knee replacements (#281 in California), 19 hip replacements, and 13 shoulder replacements in the latest annual CMS data, totaling 58 Medicare-verified procedures.
In California, Dr. Guilfoy performs below the state average in knee (26 vs 47), below the state average in hip (19 vs 41), below the state average in shoulder (13 vs 31).
Dr. Guilfoy performs all three major joint replacement procedures — hip, knee, and shoulder — indicating a broad scope of orthopedic practice. The largest share is knee replacements (26 cases), followed by hip replacements (19) and shoulder replacements (13).
Folsom is home to 5 orthopedic surgeons in the current Medicare dataset. Patients in the Folsom area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. Guilfoy extend back to 2013, covering 12 years of data. Over that period, recorded procedure volume increased from 13 to 58 in the most recent data, a 346% increase. This sustained growth reflects an expanding joint replacement practice.
Dr. Guilfoy's 26 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 | Shoulder Replacement |
|---|---|---|---|
| 2013 | 13 | 0 | 0 |
| 2014 | 19 | 26 | 0 |
| 2015 | 13 | 24 | 0 |
| 2016 | 16 | 27 | 0 |
| 2017 | 0 | 28 | 0 |
| 2018 | 21 | 30 | 0 |
| 2019 | 11 | 35 | 0 |
| 2020 | 20 | 38 | 0 |
| 2021 | 21 | 34 | 0 |
| 2022 | 21 | 27 | 0 |
| 2023 | 25 | 26 | 11 |
| 2024 | 19 | 26 | 13 |
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. Guilfoy Compares
Procedure volume compared to the California state average.
Volume Trend Analysis
Dr. Guilfoy's Medicare-recorded procedure volume has trended upward over 12 years, increasing 346% from 13 procedures in 2013 to 58 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.
Rehabilitation Roadmap: Your Complete Recovery GuideA structured physical therapy progression from the first post-op exercises through full strength and mobility restoration over 3 to 6 months.
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. Guilfoy
How does Dr. Guilfoy's procedure volume compare to other California surgeons?
Dr. Guilfoy has performed 58 Medicare-verified joint replacement procedures. This is in line with the California average of 68 procedures per surgeon. Dr. Guilfoy ranks #237 out of 613 orthopedic surgeons in California.
What types of joint replacement does Dr. Guilfoy perform?
Dr. Guilfoy performs all three major joint replacement procedures: knee replacement (26 cases), hip replacement (19 cases), shoulder replacement (13 cases). This breadth indicates a comprehensive orthopedic joint replacement practice.
Are there other orthopedic surgeons near Dr. Guilfoy in Folsom?
Yes. There are 5 orthopedic surgeons in Folsom 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. Guilfoy 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. Guilfoy's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 58 procedures shown here.
Has Dr. Guilfoy's procedure volume changed over time?
Yes. Dr. Guilfoy's Medicare-recorded volume has increased from 13 procedures in 2013 to 58 in the most recent data, a 346% increase over 12 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 62 procedures in 2023.
Does Dr. Guilfoy perform more than one type of joint replacement?
Yes. Dr. Guilfoy's Medicare data shows procedures in knee replacement (26 cases), hip replacement (19 cases), shoulder replacement (13 cases). Performing all three major joint replacements places Dr. Guilfoy among the 5% of orthopedic surgeons nationally who cover hip, knee, and shoulder arthroplasty.
Which hospitals is Dr. Guilfoy affiliated with?
According to CMS facility affiliation data, Dr. Guilfoy is affiliated with Mercy Hospital Of Folsom, Sutter Roseville Medical Center.
How does Dr. Guilfoy compare to other orthopedic surgeons in Folsom?
Among the 5 orthopedic surgeons in Folsom, Dr. Guilfoy ranks #2 by total Medicare procedure volume. Dr. Guilfoy is among the highest-volume surgeons in Folsom.
What are the quality ratings for hospitals where Dr. Guilfoy practices?
Mercy Hospital Of Folsom (4 out of 5 CMS stars, hip/knee complication rate similar to national average); Sutter Roseville Medical Center (3 out of 5 CMS stars, hip/knee complication rate above national average). These are hospital-level quality metrics from CMS Hospital Compare and do not reflect individual surgeon outcomes.
Other Orthopedic Surgeons in Folsom, California
Dr. Guilfoy's 58 Medicare procedures are above the Folsom average of 52. The table below compares verified procedure volumes for orthopedic surgeons practicing in Folsom.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Robert Lucas | 86 | Hip, Knee, Shoulder |
| Dr. Patrick Osgood | 45 | Hip, Knee |
| Dr. Sean Robinson | 37 | Hip, Knee |
| Dr. Sean Wahlquist | 34 | Knee |
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.