Dr. Diego Villacis, M.D.
Contact & Location
262-434-1000
Summit, WI 53066
Lincolnshire, IL 60069
Dr. Villacis performs more shoulder replacement procedures than 75% of orthopedic surgeons in Wisconsin, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #10 of 40 ranked shoulder surgeons in Wisconsin.
About Dr. Villacis
Dr. Diego Villacis is a board-certified orthopedic surgeon practicing in Summit, Wisconsin. A Medicare provider since 2012, Dr. Villacis performed 29 Medicare-verified shoulder replacements in the latest annual CMS data, ranking #10 in Wisconsin.
In Wisconsin, Dr. Villacis performs near the state average in shoulder (29 vs 25).
Dr. Villacis's Medicare data shows a focused shoulder replacement practice with 29 verified procedures. Surgeons who concentrate on a single procedure type often develop deep procedural expertise, though total practice volume may include additional procedures not captured in Medicare fee-for-service data.
Beyond general orthopedic surgery, Dr. Villacis holds additional credentials in Sports Medicine, reflecting subspecialty training that may benefit patients with complex joint conditions.
Summit is home to 2 orthopedic surgeons in the current Medicare dataset. Patients in the Summit area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. Villacis extend back to 2017, covering 7 years of data. Over that period, recorded procedure volume increased from 13 to 29 in the most recent data, a 123% increase. This sustained growth reflects an expanding joint replacement practice.
Among 2,217 shoulder replacement surgeons tracked nationally, Dr. Villacis's 29 verified procedures is near the national average of 29.
Verified Case Volume Trends (2013-Current)
| Year | Shoulder Replacement |
|---|---|
| 2013 | 0 |
| 2014 | 0 |
| 2015 | 0 |
| 2016 | 0 |
| 2017 | 13 |
| 2018 | 25 |
| 2019 | 13 |
| 2020 | 0 |
| 2021 | 11 |
| 2022 | 19 |
| 2023 | 23 |
| 2024 | 29 |
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 29% to 37% for shoulder 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. Villacis Compares
Procedure volume compared to the Wisconsin state average.
Volume Trend Analysis
Dr. Villacis's Medicare-recorded procedure volume has trended upward over 7 years, increasing 123% from 13 procedures in 2017 to 29 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 Shoulder Replacement
If you are considering shoulder replacement surgery, these evidence-based guides can help you prepare and recover:
Evidence-based exercises and lifestyle adjustments that can improve surgical outcomes and speed recovery when started weeks before your procedure.
Pain Management After Joint ReplacementA comprehensive guide to managing post-surgical pain through medication, physical therapy, cold therapy, and non-pharmacological strategies.
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.
Shoulder Replacement Recovery Overview
Recovery timelines vary by patient, but here is a general overview of what to expect after shoulder replacement surgery:
Individual recovery varies based on overall health, age, and adherence to physical therapy. View full shoulder replacement recovery guide and product recommendations
Frequently Asked Questions About Dr. Villacis
How does Dr. Villacis's procedure volume compare to other Wisconsin surgeons?
Dr. Villacis has performed 29 Medicare-verified joint replacement procedures. The Wisconsin average is 51 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Villacis ranks #119 out of 189 orthopedic surgeons in Wisconsin.
What types of joint replacement does Dr. Villacis perform?
Dr. Villacis's reported Medicare volume is focused on shoulder replacement, with 29 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
How experienced is Dr. Villacis with shoulder replacement surgery?
Dr. Villacis ranks #10 in Wisconsin for shoulder replacement with 29 Medicare-verified procedures. This high ranking among 189 state surgeons indicates significant experience with this specific procedure.
Are there other orthopedic surgeons near Dr. Villacis in Summit?
Yes. There are 2 orthopedic surgeons in Summit 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 Wisconsin surgeons.
What does the Medicare data for Dr. Villacis 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 29% to 37% for shoulder replacement, which puts Dr. Villacis's total volume across all insurers at roughly 80 to 100 procedures against the 29 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. Villacis's procedure volume changed over time?
Yes. Dr. Villacis's Medicare-recorded volume has increased from 13 procedures in 2017 to 29 in the most recent data, a 123% increase over 7 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 29 procedures in 2024.
Which hospitals is Dr. Villacis affiliated with?
According to CMS facility affiliation data, Dr. Villacis is affiliated with Aurora Medical Center Summit, Aurora Medical Center, Aurora Lakeland Medical Center.
What are the quality ratings for hospitals where Dr. Villacis practices?
Aurora Medical Center Summit (5 out of 5 CMS stars, insufficient case volume for complication rate comparison); Aurora Medical Center (5 out of 5 CMS stars, hip/knee complication rate similar to national average); Aurora Lakeland Medical Center (4 out of 5 CMS stars, insufficient case volume for complication rate comparison). These are hospital-level quality metrics from CMS Hospital Compare and do not reflect individual surgeon outcomes.
Other Orthopedic Surgeons in Summit, Wisconsin
Dr. Villacis's 29 Medicare procedures are below the Summit average of 57. The table below compares verified procedure volumes for orthopedic surgeons practicing in Summit.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Timothy Schnettler | 84 | 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.