Dr. David Rojer, MD
Contact & Location
Linden, NJ 07036
Dr. David Rojer is a board-certified orthopedic surgeon practicing in Linden, New Jersey. Dr. Rojer has performed 14 Medicare-verified knee replacements (#125 in New Jersey) and 11 hip replacements, for a combined total of 25 procedures.
In New Jersey, Dr. Rojer performs below average in knee (14 vs 54 avg), below average in hip (11 vs 44 avg).
Dr. Rojer's reported Medicare volume is split between knee replacements (14 cases) and hip replacements (11 cases).
Linden is home to 3 orthopedic surgeons in the current Medicare dataset. Patients in the Linden area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Dr. Rojer's Medicare data spans 9 years, beginning in 2013. Volume peaked at 91 procedures in 2015 before settling at 25 in the most recent data. Changes in Medicare reporting, payer mix shifts, or practice focus adjustments can all influence year-to-year volume.
Dr. Rojer's 14 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)
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. Rojer Compares
Procedure volume compared to the New Jersey state average.
Volume Trend Analysis
Dr. Rojer's recorded volume peaked at 91 procedures in 2015 and stood at 25 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.
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.
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.
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. Rojer
How does Dr. Rojer's procedure volume compare to other New Jersey surgeons?
Dr. Rojer has performed 25 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. Rojer ranks #129 out of 184 orthopedic surgeons in New Jersey.
What types of joint replacement does Dr. Rojer perform?
Dr. Rojer's Medicare data shows procedures in knee replacement (14 cases) and hip replacement (11 cases).
Are there other orthopedic surgeons near Dr. Rojer in Linden?
Yes. There are 3 orthopedic surgeons in Linden 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. Rojer 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. Rojer's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 25 procedures shown here.
Has Dr. Rojer's procedure volume changed over time?
Dr. Rojer's Medicare-recorded volume peaked at 91 procedures in 2015 and was 25 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.
Does Dr. Rojer perform more than one type of joint replacement?
Yes. Dr. Rojer's Medicare data shows procedures in knee replacement (14 cases), hip replacement (11 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Rojer affiliated with?
According to CMS facility affiliation data, Dr. Rojer is affiliated with Robert Wood Johnson University Hospital At Rahway.
How does Dr. Rojer compare to other orthopedic surgeons in Linden?
Among the 3 orthopedic surgeons in Linden, Dr. Rojer ranks #2 by total Medicare procedure volume. Dr. Rojer is among the highest-volume surgeons in Linden.
What are the quality ratings for hospitals where Dr. Rojer practices?
Robert Wood Johnson University Hospital At Rahway (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 Linden, New Jersey
Dr. Rojer's 25 Medicare procedures are above the Linden average of 24. The table below compares verified procedure volumes for orthopedic surgeons practicing in Linden.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Mark Ghobrial | 30 | Knee |
| Dr. Mina Abdelshahed | 16 | 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.