Dr. Daniel Troy, M.D.
Contact & Location
708-599-5000
Oak Lawn, IL 60453
Dr. Troy performs more knee replacement procedures than 19% of orthopedic surgeons in Illinois, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #203 of 251 ranked knee surgeons in Illinois.
About Dr. Troy
Practice. Dr. Daniel Troy is a board-certified orthopedic surgeon practicing in Oak Lawn, Illinois. The latest annual CMS data records 18 knee replacements and 16 hip replacements, 34 procedures in all. That is #203 in Illinois for knee replacement. A Medicare provider since 2006.
Trend. Medicare records run from 2013 to 2024, 12 years. Volume peaked at 71 in 2014 and stands at 34 now. Reporting changes and payer mix can both move that number.
National context. Among 6,612 knee replacement surgeons tracked nationally, 18 procedures is below the national average of 45. Medicare covers part of all joint replacements, so true volume is likely higher.
Local context. Oak Lawn has 4 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 | 24 | 30 |
| 2014 | 34 | 37 |
| 2015 | 31 | 33 |
| 2016 | 34 | 28 |
| 2017 | 21 | 42 |
| 2018 | 17 | 20 |
| 2019 | 19 | 20 |
| 2020 | 11 | 0 |
| 2021 | 23 | 23 |
| 2022 | 20 | 19 |
| 2023 | 16 | 25 |
| 2024 | 16 | 18 |
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. Troy Compares
Procedure volume compared to the Illinois state average.
Volume Trend Analysis
Dr. Troy's recorded volume peaked at 71 procedures in 2014 and stood at 34 in the most recent data. Year-to-year variation can reflect changes in payer mix, practice scope, or Medicare billing patterns.
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.
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 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. Troy
How does Dr. Troy's procedure volume compare to other Illinois surgeons?
Dr. Troy has performed 34 Medicare-verified joint replacement procedures. The Illinois average is 69 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Troy ranks #200 out of 316 orthopedic surgeons in Illinois.
What types of joint replacement does Dr. Troy perform?
Dr. Troy's Medicare data shows procedures in knee replacement (18 cases) and hip replacement (16 cases).
Are there other orthopedic surgeons near Dr. Troy in Oak Lawn?
Yes. There are 4 orthopedic surgeons in Oak Lawn 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 Illinois surgeons.
What does the Medicare data for Dr. Troy 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. Troy's total volume across all insurers at roughly 110 to 140 procedures against the 34 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. Troy's procedure volume changed over time?
Dr. Troy's Medicare-recorded volume peaked at 71 procedures in 2014 and was 34 in the most recent data. Volume fluctuations can reflect changes in payer mix, practice focus, or Medicare reporting rather than a change in overall surgical activity.
Does Dr. Troy perform more than one type of joint replacement?
Yes. Dr. Troy's Medicare data shows procedures in knee replacement (18 cases), hip replacement (16 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Troy affiliated with?
According to CMS facility affiliation data, Dr. Troy is affiliated with Advocate Christ Hospital & Medical Center, Palos Community Hospital, Silver Cross Hospital And Medical Centers, Loyola University Medical Center, Advocate Trinity Hospital.
How does Dr. Troy compare to other orthopedic surgeons in Oak Lawn?
Among the 4 orthopedic surgeons in Oak Lawn, Dr. Troy ranks #2 by total Medicare procedure volume. Dr. Troy is among the highest-volume surgeons in Oak Lawn.
What are the quality ratings for hospitals where Dr. Troy practices?
Advocate Christ Hospital & Medical Center (3 out of 5 CMS stars, hip/knee complication rate similar to national average); Palos Community Hospital (3 out of 5 CMS stars, hip/knee complication rate similar to national average); Silver Cross Hospital And Medical Centers (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 Oak Lawn, Illinois
Dr. Troy's 34 Medicare procedures are above the Oak Lawn average of 28. The table below compares verified procedure volumes for orthopedic surgeons practicing in Oak Lawn.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Harun Durudogan | 37 | Hip, Knee |
| Dr. James Leonard | 20 | Shoulder |
| Dr. Shane Mehta | 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.