Dr. Kevin Cassidy, M.D.
Dr. Kevin Cassidy is a board-certified orthopedic surgeon practicing in Great Neck, New York. A Medicare provider since 2008, Dr. Cassidy has performed 89 Medicare-verified knee replacements (#37 in New York) and 41 hip replacements, for a combined total of 130 procedures.
In New York, Dr. Cassidy performs above average in knee (89 vs 45 avg), near average in hip (41 vs 42 avg).
Dr. Cassidy's reported Medicare volume is split between knee replacements (89 cases) and hip replacements (41 cases).
Great Neck is home to 16 orthopedic surgeons in the current Medicare dataset. Patients in the Great Neck area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. Cassidy extend back to 2015, covering 9 years of data. Over that period, recorded procedure volume increased from 32 to 130 in the most recent data, a 306% increase. This sustained growth reflects an expanding joint replacement practice.
Among 6,720 knee replacement surgeons tracked nationally, Dr. Cassidy's 89 verified procedures is above the national average of 45.
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. Cassidy Compares
Procedure volume compared to the New York state average.
Contact & Location
Great Neck, NY 11021
Verified Case Volume Trends (2013-Current)
Volume Trend Analysis
Dr. Cassidy's Medicare-recorded procedure volume has trended upward over 9 years, increasing 306% from 32 procedures in 2015 to 130 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.
Questions to Ask Your Surgeon Before Joint ReplacementA practical checklist of questions covering experience, technique, hospital choice, and recovery expectations to discuss during your surgical consultation.
Pain Management After Joint ReplacementA comprehensive guide to managing post-surgical pain through medication, physical therapy, cold therapy, and non-pharmacological strategies.
Outpatient Joint Replacement: A Medicare GuideHow outpatient joint replacement works under Medicare, including eligibility criteria, cost differences, and what to expect with same-day discharge.
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. Cassidy
How does Dr. Cassidy's procedure volume compare to other New York surgeons?
Dr. Cassidy has performed 130 Medicare-verified joint replacement procedures. This is significantly above the New York average of 67 procedures per surgeon. Dr. Cassidy ranks #55 out of 338 orthopedic surgeons in New York.
What types of joint replacement does Dr. Cassidy perform?
Dr. Cassidy's Medicare data shows procedures in knee replacement (89 cases) and hip replacement (41 cases).
Are there other orthopedic surgeons near Dr. Cassidy in Great Neck?
Yes. There are 16 orthopedic surgeons in Great Neck 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 New York surgeons.
What does the Medicare data for Dr. Cassidy 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. Cassidy's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 130 procedures shown here.
Has Dr. Cassidy's procedure volume changed over time?
Yes. Dr. Cassidy's Medicare-recorded volume has increased from 32 procedures in 2015 to 130 in the most recent data, a 306% increase over 9 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 130 procedures in 2023.
Does Dr. Cassidy perform more than one type of joint replacement?
Yes. Dr. Cassidy's Medicare data shows procedures in knee replacement (89 cases), hip replacement (41 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Cassidy affiliated with?
According to CMS facility affiliation data, Dr. Cassidy is affiliated with St Francis Hospital, Roslyn, Long Island Jewish Medical Center.
How does Dr. Cassidy compare to other orthopedic surgeons in Great Neck?
Among the 16 orthopedic surgeons in Great Neck, Dr. Cassidy ranks #3 by total Medicare procedure volume. Dr. Cassidy is among the highest-volume surgeons in Great Neck.
What are the quality ratings for hospitals where Dr. Cassidy practices?
St Francis Hospital, Roslyn (5 out of 5 CMS stars, hip/knee complication rate similar to national average); Long Island Jewish Medical Center (3 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 Great Neck, New York
Dr. Cassidy's 130 Medicare procedures are above the Great Neck average of 108. The table below compares verified procedure volumes for orthopedic surgeons practicing in Great Neck.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Jonathan Danoff | 223 | Hip, Knee |
| Dr. Bruce Seideman | 152 | Hip, Knee |
| Dr. Scott Marwin | 74 | Hip, Knee |
| Dr. Stanley Asnis | 68 | Hip, Knee |
| Dr. Paul Enker | 60 | Hip, Knee |
| Dr. Barry Simonson | 48 | Knee |
Patient Reviews & Ratings
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