Dr. Sivaram Rajan, MD
Contact & Location
Hackensack, NJ 07601
Dr. Sivaram Rajan is a board-certified orthopedic surgeon practicing in Hackensack, New Jersey. A Medicare provider since 2006, Dr. Rajan has completed 22 knee replacements (#93 in New Jersey), 15 hip replacements, and 12 shoulder replacements, totaling 49 Medicare-verified procedures.
In New Jersey, Dr. Rajan performs below average in knee (22 vs 54 avg), below average in hip (15 vs 44 avg), below average in shoulder (12 vs 29 avg).
Dr. Rajan performs all three major joint replacement procedures — hip, knee, and shoulder — indicating a broad scope of orthopedic practice. The largest share is knee replacements (22 cases), followed by hip replacements (15) and shoulder replacements (12).
Beyond general orthopedic surgery, Dr. Rajan holds additional credentials in Sports Medicine, reflecting subspecialty training that may benefit patients with complex joint conditions.
Hackensack is home to 8 orthopedic surgeons in the current Medicare dataset. Patients in the Hackensack area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. Rajan extend back to 2013, covering 12 years of data. Over that period, recorded procedure volume increased from 20 to 49 in the most recent data, a 145% increase. This sustained growth reflects an expanding joint replacement practice.
Dr. Rajan's 22 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. 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 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. Rajan's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 49 procedures shown here.
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.
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). 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.