Dr. Zachary Lum, D.O.
Contact & Location
954-430-9901
Pembroke Pines, FL 33029
Plantation, FL 33324
Weston, FL 33326
Dr. Lum performs more knee replacement procedures than 30% of orthopedic surgeons in Florida, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #283 of 406 ranked knee surgeons in Florida.
About Dr. Lum
Practice. Dr. Zachary Lum is a board-certified orthopedic surgeon practicing in Pembroke Pines, Florida. The latest annual CMS data records 23 knee replacements and 21 hip replacements, 44 procedures in all. That is #283 in Florida for knee replacement. A Medicare provider since 2012.
Trend. Medicare records run from 2018 to 2024, 5 years. Volume rose from 13 procedures a year to 44, up 238%.
National context. Among 6,612 knee replacement surgeons tracked nationally, 23 procedures is below the national average of 45. Medicare covers part of all joint replacements, so true volume is likely higher.
Local context. Pembroke Pines has 3 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 |
|---|---|---|
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 13 |
| 2019 | 13 | 25 |
| 2020 | 17 | 31 |
| 2021 | 17 | 17 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 21 | 23 |
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. Lum Compares
Procedure volume compared to the Florida state average.
Volume Trend Analysis
Dr. Lum's Medicare-recorded procedure volume has trended upward over 5 years, increasing 238% from 13 procedures in 2018 to 44 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.
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. Lum
How does Dr. Lum's procedure volume compare to other Florida surgeons?
Dr. Lum has performed 44 Medicare-verified joint replacement procedures. The Florida average is 72 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Lum ranks #288 out of 523 orthopedic surgeons in Florida.
What types of joint replacement does Dr. Lum perform?
Dr. Lum's Medicare data shows procedures in knee replacement (23 cases) and hip replacement (21 cases).
Are there other orthopedic surgeons near Dr. Lum in Pembroke Pines?
Yes. There are 3 orthopedic surgeons in Pembroke Pines 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 Florida surgeons.
What does the Medicare data for Dr. Lum 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. Lum's total volume across all insurers at roughly 150 to 180 procedures against the 44 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. Lum's procedure volume changed over time?
Yes. Dr. Lum's Medicare-recorded volume has increased from 13 procedures in 2018 to 44 in the most recent data, a 238% increase over 5 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 48 procedures in 2020.
Does Dr. Lum perform more than one type of joint replacement?
Yes. Dr. Lum's Medicare data shows procedures in knee replacement (23 cases), hip replacement (21 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Lum affiliated with?
According to CMS facility affiliation data, Dr. Lum is affiliated with University Of California Davis Medical Center, Sierra Nevada Memorial Hospital. Dr. Lum maintains hospital privileges across state lines, indicating a practice that serves patients in multiple states.
How does Dr. Lum compare to other orthopedic surgeons in Pembroke Pines?
Among the 3 orthopedic surgeons in Pembroke Pines, Dr. Lum ranks #1 by total Medicare procedure volume. Dr. Lum has the highest verified Medicare volume in the city.
What are the quality ratings for hospitals where Dr. Lum practices?
University Of California Davis Medical Center (3 out of 5 CMS stars, hip/knee complication rate similar to national average); Sierra Nevada Memorial Hospital (3 out of 5 CMS stars, hip/knee complication rate above national average). These are hospital-level quality metrics from CMS Hospital Compare and do not reflect individual surgeon outcomes.
Other Orthopedic Surgeons in Pembroke Pines, Florida
Dr. Lum's 44 Medicare procedures are above the Pembroke Pines average of 33. The table below compares verified procedure volumes for orthopedic surgeons practicing in Pembroke Pines.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Daniel Sheldon | 38 | Hip, Knee |
| Dr. Miriam Weisberg-Tannenbaum | 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.