Dr. Joshua Zimmerman, M.D.
Contact & Location
908-757-1520
Edison, NJ 08837
Dr. Zimmerman performs more shoulder replacement procedures than 4% of orthopedic surgeons in New Jersey, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #39 of 41 ranked shoulder surgeons in New Jersey.
About Dr. Zimmerman
Practice. Dr. Joshua Zimmerman is a board-certified orthopedic surgeon practicing in Edison, New Jersey. The latest annual CMS data records 11 shoulder replacements. That is #39 in New Jersey for shoulder replacement. A Medicare provider since 2005.
Trend. Dr. Zimmerman first appears in the Medicare data in 2018. With 2 years on record, the trend is still short.
National context. Among 2,217 shoulder replacement surgeons tracked nationally, 11 procedures is below the national average of 29. Medicare covers part of all joint replacements, so true volume is likely higher.
Local context. Edison has 5 orthopedic surgeons in the current Medicare data. Comparing volume and procedure mix across them is one way to narrow a shortlist.
Verified Case Volume
Verified Medicare data is available for 2 years: 12 procedures in 2018 and 11 procedures in the most recent reporting year. A multi-year trend chart is shown once at least 3 years of data are available.
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 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. Zimmerman Compares
Procedure volume compared to the New Jersey state average.
Volume Trend Analysis
Dr. Zimmerman has 2 years of Medicare procedure data beginning in 2018. Additional years of data will provide a clearer picture of volume trends.
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 Shoulder Replacement
If you are considering shoulder replacement surgery, these evidence-based guides can help you prepare and recover:
A step-by-step walkthrough of your surgical day, from pre-op preparation through anesthesia, the procedure itself, and the first hours of recovery.
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 Coverage for Joint ReplacementWhat Medicare Part A and Part B cover for joint replacement surgery, including hospital stays, surgeon fees, anesthesia, and physical therapy.
Shoulder Replacement Recovery Overview
Recovery timelines vary by patient, but here is a general overview of what to expect after shoulder replacement surgery:
Individual recovery varies based on overall health, age, and adherence to physical therapy. View full shoulder replacement recovery guide and product recommendations
Frequently Asked Questions About Dr. Zimmerman
How does Dr. Zimmerman's procedure volume compare to other New Jersey surgeons?
Dr. Zimmerman has performed 11 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. Zimmerman ranks #183 out of 184 orthopedic surgeons in New Jersey.
What types of joint replacement does Dr. Zimmerman perform?
Dr. Zimmerman's reported Medicare volume is focused on shoulder replacement, with 11 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
Are there other orthopedic surgeons near Dr. Zimmerman in Edison?
Yes. There are 5 orthopedic surgeons in Edison 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. Zimmerman 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 29% to 37% for shoulder replacement, which puts Dr. Zimmerman's total volume across all insurers at roughly 30 to 40 procedures against the 11 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.
Which hospitals is Dr. Zimmerman affiliated with?
According to CMS facility affiliation data, Dr. Zimmerman is affiliated with Raritan Bay Medical Center, Jfk University Medical Center.
How does Dr. Zimmerman compare to other orthopedic surgeons in Edison?
Among the 5 orthopedic surgeons in Edison, Dr. Zimmerman ranks #5 by total Medicare procedure volume. The highest-volume surgeon in Edison has 34 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Zimmerman practices?
Raritan Bay Medical Center (3 out of 5 CMS stars, insufficient case volume for complication rate comparison); Jfk University 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 Edison, New Jersey
Dr. Zimmerman's 11 Medicare procedures are below the Edison average of 21. The table below compares verified procedure volumes for orthopedic surgeons practicing in Edison.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Alexander Russoniello | 34 | Knee |
| Dr. Edwin Theosmy | 31 | Hip, Knee |
| Dr. Nicholas Phillips | 20 | Shoulder |
| Dr. Mitchell Stroh | 11 | 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.