Dr. David Zijerdi, M.D.
Contact & Location
540-373-4602
Fredericksburg, VA 22401
Dr. Zijerdi performs more knee replacement procedures than 66% of orthopedic surgeons in Virginia, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #62 of 183 ranked knee surgeons in Virginia.
About Dr. Zijerdi
Dr. David Zijerdi is a board-certified orthopedic surgeon practicing in Fredericksburg, Virginia. A Medicare provider since 2006, Dr. Zijerdi performed 63 Medicare-verified knee replacements (#62 in Virginia) and 26 hip replacements in the latest annual CMS data, for a combined total of 89 procedures.
In Virginia, Dr. Zijerdi performs near the state average in knee (63 vs 58), below the state average in hip (26 vs 47).
Dr. Zijerdi's reported Medicare volume is split between knee replacements (63 cases) and hip replacements (26 cases).
Fredericksburg is home to 7 orthopedic surgeons in the current Medicare dataset. Patients in the Fredericksburg area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. Zijerdi extend back to 2013, covering 12 years of data. Over that period, recorded procedure volume increased from 12 to 89 in the most recent data, a 642% increase. This sustained growth reflects an expanding joint replacement practice.
Among 6,612 knee replacement surgeons tracked nationally, Dr. Zijerdi's 63 verified procedures is above the national average of 45.
Verified Case Volume Trends (2013-Current)
| Year | Hip Replacement | Knee Replacement |
|---|---|---|
| 2013 | 0 | 12 |
| 2014 | 13 | 0 |
| 2015 | 0 | 11 |
| 2016 | 0 | 18 |
| 2017 | 16 | 26 |
| 2018 | 17 | 32 |
| 2019 | 25 | 31 |
| 2020 | 26 | 29 |
| 2021 | 27 | 22 |
| 2022 | 26 | 27 |
| 2023 | 37 | 61 |
| 2024 | 26 | 63 |
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. 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. Zijerdi Compares
Procedure volume compared to the Virginia state average.
Volume Trend Analysis
Dr. Zijerdi's Medicare-recorded procedure volume has trended upward over 12 years, increasing 642% from 12 procedures in 2013 to 89 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.
Pain Management After Joint ReplacementA comprehensive guide to managing post-surgical pain through medication, physical therapy, cold therapy, and non-pharmacological strategies.
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. Zijerdi
How does Dr. Zijerdi's procedure volume compare to other Virginia surgeons?
Dr. Zijerdi has performed 89 Medicare-verified joint replacement procedures. This is in line with the Virginia average of 82 procedures per surgeon. Dr. Zijerdi ranks #81 out of 229 orthopedic surgeons in Virginia.
What types of joint replacement does Dr. Zijerdi perform?
Dr. Zijerdi's Medicare data shows procedures in knee replacement (63 cases) and hip replacement (26 cases).
Are there other orthopedic surgeons near Dr. Zijerdi in Fredericksburg?
Yes. There are 7 orthopedic surgeons in Fredericksburg 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 Virginia surgeons.
What does the Medicare data for Dr. Zijerdi 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, which puts Dr. Zijerdi's total volume across all insurers at roughly 300 to 380 procedures against the 89 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. Zijerdi's procedure volume changed over time?
Yes. Dr. Zijerdi's Medicare-recorded volume has increased from 12 procedures in 2013 to 89 in the most recent data, a 642% increase over 12 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 98 procedures in 2023.
Does Dr. Zijerdi perform more than one type of joint replacement?
Yes. Dr. Zijerdi's Medicare data shows procedures in knee replacement (63 cases), hip replacement (26 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Zijerdi affiliated with?
According to CMS facility affiliation data, Dr. Zijerdi is affiliated with Stafford Hospital, Llc, Mary Washington Hospital, Inc.
How does Dr. Zijerdi compare to other orthopedic surgeons in Fredericksburg?
Among the 7 orthopedic surgeons in Fredericksburg, Dr. Zijerdi ranks #2 by total Medicare procedure volume. Dr. Zijerdi is among the highest-volume surgeons in Fredericksburg.
What are the quality ratings for hospitals where Dr. Zijerdi practices?
Stafford Hospital, Llc (3 out of 5 CMS stars, insufficient case volume for complication rate comparison); Mary Washington Hospital, Inc (2 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 Fredericksburg, Virginia
Dr. Zijerdi's 89 Medicare procedures are below the Fredericksburg average of 90. The table below compares verified procedure volumes for orthopedic surgeons practicing in Fredericksburg.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Brian McDermott | 237 | Hip, Knee |
| Dr. Elvis Xhaferi | 88 | Hip, Knee |
| Dr. Kenneth Accousti | 81 | Shoulder |
| Dr. Nicholas Harding | 60 | Hip, Knee |
| Dr. Erik Krushinski | 55 | Knee, Shoulder |
| Dr. Timothy Neary | 19 | 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.