Dr. Rocco Simmerano, M.D.
Contact & Location
973-625-1221
Denville, NJ 07834
Dr. Simmerano performs more knee replacement procedures than 35% of orthopedic surgeons in New Jersey, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #91 of 140 ranked knee surgeons in New Jersey.
About Dr. Simmerano
Practice. Dr. Rocco Simmerano is a board-certified orthopedic surgeon practicing in Denville, New Jersey. The latest annual CMS data records 23 knee replacements. That is #91 in New Jersey for knee replacement. A Medicare provider since 2006.
Trend. Medicare records run from 2015 to 2024, 4 years. Volume rose from 18 procedures a year to 23, up 28%.
National context. Among 6,612 knee replacement surgeons tracked nationally, 23 procedures is below the national average of 45. Medicare covers part of all joint replacements, so true volume is likely higher.
Local context. Denville has 2 orthopedic surgeons in the current Medicare data. Comparing volume and procedure mix across them is one way to narrow a shortlist.
Verified Case Volume Trends (2013-Current)
| Year | Knee Replacement |
|---|---|
| 2013 | 0 |
| 2014 | 0 |
| 2015 | 18 |
| 2016 | 0 |
| 2017 | 0 |
| 2018 | 0 |
| 2019 | 0 |
| 2020 | 0 |
| 2021 | 0 |
| 2022 | 12 |
| 2023 | 16 |
| 2024 | 23 |
Verified Medicare Cases
How is this estimated?
Medicare Part B fee-for-service claims are one payer stream among several, and the share they represent differs by procedure. In 2024 it was 23% to 28% for knee replacement. Each verified count above is divided by its own procedure's range, and the results are added, to estimate total practice volume across all payers. The verified Medicare count is the definitive, audited figure; this is a range derived from published national volume projections, not a measurement, and an individual practice can sit well outside it: how these ranges are derived, and their sources.
How Dr. Simmerano Compares
Procedure volume compared to the New Jersey state average.
Volume Trend Analysis
Dr. Simmerano's Medicare-recorded procedure volume has trended upward over 4 years, increasing 28% from 18 procedures in 2015 to 23 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.
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.
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. Simmerano
How does Dr. Simmerano's procedure volume compare to other New Jersey surgeons?
Dr. Simmerano has performed 23 Medicare-verified joint replacement procedures. The New Jersey average is 72 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Simmerano ranks #132 out of 184 orthopedic surgeons in New Jersey.
What types of joint replacement does Dr. Simmerano perform?
Dr. Simmerano's reported Medicare volume is focused on knee replacement, with 23 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
Are there other orthopedic surgeons near Dr. Simmerano in Denville?
Yes. There are 2 orthopedic surgeons in Denville 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 Jersey surgeons.
What does the Medicare data for Dr. Simmerano represent?
The procedure counts shown are based on 2024 Medicare Part B fee-for-service claims data, published by the Centers for Medicare and Medicaid Services (CMS). Medicare fee-for-service is only one payer stream, and the share of national volume it represents differs by procedure. In 2024 the share was 23% to 28% for knee replacement, which puts Dr. Simmerano's total volume across all insurers at roughly 80 to 100 procedures against the 23 verified here. Those shares are derived from published national volume projections rather than quoted from a single publication, and they are estimates with real uncertainty. The OrthoProcedures methodology page shows the full derivation, the sources, and the limits at orthoprocedures.com/data-methodology.html.
Has Dr. Simmerano's procedure volume changed over time?
Yes. Dr. Simmerano's Medicare-recorded volume has increased from 18 procedures in 2015 to 23 in the most recent data, a 28% increase over 4 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 23 procedures in 2024.
Which hospitals is Dr. Simmerano affiliated with?
According to CMS facility affiliation data, Dr. Simmerano is affiliated with Saint Clare'S Hospital, Morristown Medical Center, Hackettstown Medical Center.
What are the quality ratings for hospitals where Dr. Simmerano practices?
Saint Clare'S Hospital (3 out of 5 CMS stars, hip/knee complication rate similar to national average); Morristown Medical Center (5 out of 5 CMS stars, hip/knee complication rate similar to national average); Hackettstown Medical Center (3 out of 5 CMS stars, insufficient case volume for complication rate comparison). These are hospital-level quality metrics from CMS Hospital Compare and do not reflect individual surgeon outcomes.
Other Orthopedic Surgeons in Denville, New Jersey
Dr. Simmerano's 23 Medicare procedures are below the Denville average of 30. The table below compares verified procedure volumes for orthopedic surgeons practicing in Denville.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Frank Capecci | 37 | Hip, 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.