Dr. Douglas Dennis, M.D.
Contact & Location
720-524-1367
Denver, CO 80222
Dr. Dennis performs more knee replacement procedures than 66% of orthopedic surgeons in Colorado, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #39 of 118 ranked knee surgeons in Colorado.
About Dr. Dennis
Practice. Dr. Douglas Dennis is a board-certified orthopedic surgeon practicing in Denver, Colorado. The latest annual CMS data records 52 knee replacements and 21 hip replacements, 73 procedures in all. That is #39 in Colorado for knee replacement. A Medicare provider since 2005.
Trend. Medicare records run from 2013 to 2024, 12 years. Volume peaked at 142 in 2015 and stands at 73 now. Reporting changes and payer mix can both move that number.
National context. Among 6,612 knee replacement surgeons tracked nationally, 52 procedures is near the national average of 45.
Local context. Denver has 21 orthopedic surgeons in the current Medicare data. Comparing volume and procedure mix across them is one way to narrow a shortlist. Dr. Dennis also holds hospital privileges in CO and CA, a practice that extends beyond Colorado.
Verified Case Volume Trends (2013-Current)
| Year | Hip Replacement | Knee Replacement |
|---|---|---|
| 2013 | 28 | 84 |
| 2014 | 26 | 95 |
| 2015 | 29 | 113 |
| 2016 | 35 | 105 |
| 2017 | 24 | 107 |
| 2018 | 34 | 88 |
| 2019 | 23 | 77 |
| 2020 | 23 | 58 |
| 2021 | 30 | 42 |
| 2022 | 17 | 73 |
| 2023 | 14 | 41 |
| 2024 | 21 | 52 |
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. Dennis Compares
Procedure volume compared to the Colorado state average.
Volume Trend Analysis
Dr. Dennis's recorded volume peaked at 142 procedures in 2015 and stood at 73 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.
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. Dennis
How does Dr. Dennis's procedure volume compare to other Colorado surgeons?
Dr. Dennis has performed 73 Medicare-verified joint replacement procedures. This is in line with the Colorado average of 64 procedures per surgeon. Dr. Dennis ranks #53 out of 169 orthopedic surgeons in Colorado.
What types of joint replacement does Dr. Dennis perform?
Dr. Dennis's Medicare data shows procedures in knee replacement (52 cases) and hip replacement (21 cases).
Are there other orthopedic surgeons near Dr. Dennis in Denver?
Yes. There are 21 orthopedic surgeons in Denver 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 Colorado surgeons.
What does the Medicare data for Dr. Dennis 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. Dennis's total volume across all insurers at roughly 250 to 310 procedures against the 73 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. Dennis's procedure volume changed over time?
Dr. Dennis's Medicare-recorded volume peaked at 142 procedures in 2015 and was 73 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. Dennis perform more than one type of joint replacement?
Yes. Dr. Dennis's Medicare data shows procedures in knee replacement (52 cases), hip replacement (21 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Dennis affiliated with?
According to CMS facility affiliation data, Dr. Dennis is affiliated with Adventhealth Porter, Adventhealth Castle Rock, Adventhealth Littleton, Sutter Solano Medical Center. Dr. Dennis maintains hospital privileges across state lines, indicating a practice that serves patients in multiple states.
How does Dr. Dennis compare to other orthopedic surgeons in Denver?
Among the 21 orthopedic surgeons in Denver, Dr. Dennis ranks #8 by total Medicare procedure volume. The highest-volume surgeon in Denver has 129 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Dennis practices?
Adventhealth Porter (4 out of 5 CMS stars, hip/knee complication rate similar to national average); Adventhealth Castle Rock (4 out of 5 CMS stars, insufficient case volume for complication rate comparison); Adventhealth Littleton (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 Denver, Colorado
Dr. Dennis's 73 Medicare procedures are below the Denver average of 101. The table below compares verified procedure volumes for orthopedic surgeons practicing in Denver.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Brian Larkin | 129 | Hip, Knee |
| Dr. Todd Miner | 112 | Hip, Knee |
| Dr. Dennis Chang | 105 | Hip, Knee |
| Dr. Edward Parks | 103 | Hip, Knee |
| Dr. Charlie Yang | 92 | Hip, Knee |
| Dr. Jason Jennings | 91 | Hip, 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.