Dr. Hayley Ennis, M.D.
Contact & Location
720-848-0000
Broomfield, CO 80023
Miami, FL 33136
Denver, CO 80210
Dr. Ennis performs more knee replacement procedures than 67% of orthopedic surgeons in Colorado, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #38 of 118 ranked knee surgeons in Colorado.
About Dr. Ennis
Practice. Dr. Hayley Ennis is a board-certified orthopedic surgeon practicing in Broomfield, Colorado. The latest annual CMS data records 53 knee replacements and 39 hip replacements, 92 procedures in all. That is #38 in Colorado for knee replacement. A Medicare provider since 2016.
Trend. Medicare records run from 2021 to 2024, 4 years. Volume rose from 37 procedures a year to 92, up 149%.
National context. Among 6,612 knee replacement surgeons tracked nationally, 53 procedures is near the national average of 45.
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 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 12 | 25 |
| 2022 | 26 | 44 |
| 2023 | 20 | 33 |
| 2024 | 39 | 53 |
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. Ennis Compares
Procedure volume compared to the Colorado state average.
Volume Trend Analysis
Dr. Ennis's Medicare-recorded procedure volume has trended upward over 4 years, increasing 149% from 37 procedures in 2021 to 92 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.
Questions to Ask Your Surgeon Before Joint ReplacementA practical checklist of questions covering experience, technique, hospital choice, and recovery expectations to discuss during your surgical consultation.
Recovery Timeline: Week-by-Week ExpectationsA detailed week-by-week guide covering pain levels, mobility milestones, physical therapy progression, and when to expect a return to daily activities.
Outpatient Joint Replacement: A Medicare GuideHow outpatient joint replacement works under Medicare, including eligibility criteria, cost differences, and what to expect with same-day discharge.
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. Ennis
How does Dr. Ennis's procedure volume compare to other Colorado surgeons?
Dr. Ennis has performed 92 Medicare-verified joint replacement procedures. This is in line with the Colorado average of 64 procedures per surgeon. Dr. Ennis ranks #37 out of 169 orthopedic surgeons in Colorado.
What types of joint replacement does Dr. Ennis perform?
Dr. Ennis's Medicare data shows procedures in knee replacement (53 cases) and hip replacement (39 cases).
Where is Dr. Ennis's practice located?
Dr. Ennis practices in Broomfield, Colorado. The office is located at 875 W 136th Ave, Broomfield, CO 80023. Patients in the surrounding area can consult Dr. Ennis for joint replacement evaluation.
What does the Medicare data for Dr. Ennis 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. Ennis's total volume across all insurers at roughly 310 to 390 procedures against the 92 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. Ennis's procedure volume changed over time?
Yes. Dr. Ennis's Medicare-recorded volume has increased from 37 procedures in 2021 to 92 in the most recent data, a 149% increase over 4 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 92 procedures in 2024.
Does Dr. Ennis perform more than one type of joint replacement?
Yes. Dr. Ennis's Medicare data shows procedures in knee replacement (53 cases), hip replacement (39 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Ennis affiliated with?
According to CMS facility affiliation data, Dr. Ennis is affiliated with Uchealth Highlands Ranch Hospital, Uchealth Broomfield Hospital, University Of Colorado Hospital Authority, University Colo Health Memorial Hospital Central, Longs Peak Hospital.
What are the quality ratings for hospitals where Dr. Ennis practices?
Uchealth Highlands Ranch Hospital (5 out of 5 CMS stars, insufficient case volume for complication rate comparison); Uchealth Broomfield Hospital (5 out of 5 CMS stars, insufficient case volume for complication rate comparison); University Of Colorado Hospital Authority (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.
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.