Dr. Sivaram Rajan, M.D.
Contact & Location
551-999-6433
Hackensack, NJ 07601
Hackensack, NJ 07601
Dr. Rajan performs more knee replacement procedures than 33% of orthopedic surgeons in New Jersey, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #93 of 140 ranked knee surgeons in New Jersey.
About Dr. Rajan
Practice. Dr. Sivaram Rajan is a board-certified orthopedic surgeon practicing in Hackensack, New Jersey. The latest annual CMS data records 22 knee replacements, 15 hip replacements, and 12 shoulder replacements, 49 procedures in all. That is #93 in New Jersey for knee replacement.
Trend. Medicare records run from 2013 to 2024, 12 years. Volume rose from 20 procedures a year to 49, up 145%.
National context. Among 6,612 knee replacement surgeons tracked nationally, 22 procedures is below the national average of 45. Medicare covers part of all joint replacements, so true volume is likely higher.
Local context. Hackensack has 8 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 | Hip Replacement | Knee Replacement | Shoulder Replacement |
|---|---|---|---|
| 2013 | 0 | 20 | 0 |
| 2014 | 0 | 21 | 0 |
| 2015 | 0 | 19 | 0 |
| 2016 | 0 | 22 | 0 |
| 2017 | 0 | 22 | 0 |
| 2018 | 0 | 22 | 0 |
| 2019 | 0 | 29 | 0 |
| 2020 | 0 | 19 | 0 |
| 2021 | 0 | 15 | 0 |
| 2022 | 0 | 23 | 0 |
| 2023 | 0 | 16 | 0 |
| 2024 | 15 | 22 | 12 |
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, 25% to 33% for hip replacement, 29% to 37% for shoulder 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. Rajan Compares
Procedure volume compared to the New Jersey state average.
Volume Trend Analysis
Dr. Rajan's Medicare-recorded procedure volume has trended upward over 12 years, increasing 145% from 20 procedures in 2013 to 49 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.
What to Expect on the Day of SurgeryA step-by-step walkthrough of your surgical day, from pre-op preparation through anesthesia, the procedure itself, and the first hours of recovery.
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 Coverage for Joint ReplacementWhat Medicare Part A and Part B cover for joint replacement surgery, including hospital stays, surgeon fees, anesthesia, and physical therapy.
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. Rajan
How does Dr. Rajan's procedure volume compare to other New Jersey surgeons?
Dr. Rajan has performed 49 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. Rajan ranks #79 out of 184 orthopedic surgeons in New Jersey.
What types of joint replacement does Dr. Rajan perform?
Dr. Rajan performs all three major joint replacement procedures: knee replacement (22 cases), hip replacement (15 cases), shoulder replacement (12 cases). This breadth indicates a comprehensive orthopedic joint replacement practice.
Are there other orthopedic surgeons near Dr. Rajan in Hackensack?
Yes. There are 8 orthopedic surgeons in Hackensack 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. Rajan 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, 25% to 33% for hip replacement, 29% to 37% for shoulder replacement, which puts Dr. Rajan's total volume across all insurers at roughly 160 to 200 procedures against the 49 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. Rajan's procedure volume changed over time?
Yes. Dr. Rajan's Medicare-recorded volume has increased from 20 procedures in 2013 to 49 in the most recent data, a 145% increase over 12 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 49 procedures in 2024.
Does Dr. Rajan perform more than one type of joint replacement?
Yes. Dr. Rajan's Medicare data shows procedures in knee replacement (22 cases), hip replacement (15 cases), shoulder replacement (12 cases). Performing all three major joint replacements places Dr. Rajan among the 5% of orthopedic surgeons nationally who cover hip, knee, and shoulder arthroplasty.
Which hospitals is Dr. Rajan affiliated with?
According to CMS facility affiliation data, Dr. Rajan is affiliated with Hackensack University Medical Center, Holy Name Medical Center.
How does Dr. Rajan compare to other orthopedic surgeons in Hackensack?
Among the 8 orthopedic surgeons in Hackensack, Dr. Rajan ranks #5 by total Medicare procedure volume. The highest-volume surgeon in Hackensack has 136 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Rajan practices?
Hackensack University Medical Center (5 out of 5 CMS stars, hip/knee complication rate similar to national average); Holy Name Medical Center (4 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 Hackensack, New Jersey
Dr. Rajan's 49 Medicare procedures are below the Hackensack average of 75. The table below compares verified procedure volumes for orthopedic surgeons practicing in Hackensack.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Thomas John | 136 | Hip, Knee |
| Dr. James Cahill | 122 | Hip, Knee |
| Dr. Yair Kissin | 74 | Knee |
| Dr. Francis Alberta | 66 | Shoulder |
| Dr. Stephen Rossman | 39 | Hip, Knee |
| Dr. Luis Grau | 37 | 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.