Dr. Robert Masella, M.D.
Contact & Location
908-813-9700
Hackettstown, NJ 07840
Dr. Masella performs more knee replacement procedures than 20% of orthopedic surgeons in New Jersey, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #112 of 140 ranked knee surgeons in New Jersey.
About Dr. Masella
Dr. Robert Masella is a board-certified orthopedic surgeon practicing in Hackettstown, New Jersey. A Medicare provider since 2007, Dr. Masella performed 17 Medicare-verified knee replacements in the latest annual CMS data, ranking #112 in New Jersey.
In New Jersey, Dr. Masella performs below the state average in knee (17 vs 54).
Dr. Masella's Medicare data shows a focused knee replacement practice with 17 verified procedures. Surgeons who concentrate on a single procedure type often develop deep procedural expertise, though total practice volume may include additional procedures not captured in Medicare fee-for-service data.
Hackettstown is home to 5 orthopedic surgeons in the current Medicare dataset. Patients in the Hackettstown area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Dr. Masella's Medicare data spans 5 years, beginning in 2019. Volume peaked at 41 procedures in 2023 before settling at 17 in the most recent data. Changes in Medicare reporting, payer mix shifts, or practice focus adjustments can all influence year-to-year volume.
Dr. Masella's 17 knee replacement procedures is below the national average of 45 among 6,612 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 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 13 |
| 2020 | 0 | 0 |
| 2021 | 0 | 15 |
| 2022 | 0 | 17 |
| 2023 | 14 | 27 |
| 2024 | 0 | 17 |
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. Masella Compares
Procedure volume compared to the New Jersey state average.
Volume Trend Analysis
Dr. Masella's recorded volume peaked at 41 procedures in 2023 and stood at 17 in the most recent data. Year-to-year variation can reflect changes in payer mix, practice scope, or Medicare billing patterns.
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.
Home Safety: Creating Your Recovery SanctuaryRoom-by-room modifications, equipment recommendations, and fall-prevention strategies to prepare your home for a safe post-surgical recovery.
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. Masella
How does Dr. Masella's procedure volume compare to other New Jersey surgeons?
Dr. Masella has performed 17 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. Masella ranks #150 out of 184 orthopedic surgeons in New Jersey.
What types of joint replacement does Dr. Masella perform?
Dr. Masella's reported Medicare volume is focused on knee replacement, with 17 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
Are there other orthopedic surgeons near Dr. Masella in Hackettstown?
Yes. There are 5 orthopedic surgeons in Hackettstown 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. Masella 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. Masella's total volume across all insurers at roughly 60 to 70 procedures against the 17 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. Masella's procedure volume changed over time?
Dr. Masella's Medicare-recorded volume peaked at 41 procedures in 2023 and was 17 in the most recent data. Volume fluctuations can reflect changes in payer mix, practice focus, or Medicare reporting rather than a change in overall surgical activity.
Which hospitals is Dr. Masella affiliated with?
According to CMS facility affiliation data, Dr. Masella is affiliated with Chilton Medical Center, St Joseph'S University Medical Center Inc.
How does Dr. Masella compare to other orthopedic surgeons in Hackettstown?
Among the 5 orthopedic surgeons in Hackettstown, Dr. Masella ranks #2 by total Medicare procedure volume. Dr. Masella is among the highest-volume surgeons in Hackettstown.
What are the quality ratings for hospitals where Dr. Masella practices?
Chilton Medical Center (4 out of 5 CMS stars, insufficient case volume for complication rate comparison); St Joseph'S University Medical Center Inc (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 Hackettstown, New Jersey
Dr. Masella's 17 Medicare procedures are below the Hackettstown average of 77. The table below compares verified procedure volumes for orthopedic surgeons practicing in Hackettstown.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. John Dundon | 324 | Hip, Knee |
| Dr. Michael Deehan | 16 | Knee |
| Dr. Stephen Koss | 15 | Shoulder |
| Dr. Glen Wainen | 12 | 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.