Dr. Walker Flannery, M.D.
Contact & Location
920-430-8113
Green Bay, WI 54311
Dr. Flannery performs more hip replacement procedures than 69% of orthopedic surgeons in Wisconsin, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #34 of 113 ranked hip surgeons in Wisconsin.
About Dr. Flannery
Practice. Dr. Walker Flannery is a board-certified orthopedic surgeon practicing in Green Bay, Wisconsin. The latest annual CMS data records 33 hip replacements and 19 knee replacements, 52 procedures in all. That is #34 in Wisconsin for hip replacement. A Medicare provider since 2012.
Trend. Medicare records run from 2018 to 2024, 7 years. Volume rose from 13 procedures a year to 52, up 300%.
National context. Among 4,542 hip replacement surgeons tracked nationally, 33 procedures is near the national average of 36.
Local context. Green Bay has 19 orthopedic surgeons in the current Medicare data. Comparing volume and procedure mix across them is one way to narrow a shortlist. Dr. Flannery also holds hospital privileges in WI and MI, a practice that extends beyond Wisconsin.
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 | 13 | 0 |
| 2019 | 26 | 0 |
| 2020 | 21 | 12 |
| 2021 | 37 | 12 |
| 2022 | 44 | 15 |
| 2023 | 38 | 26 |
| 2024 | 33 | 19 |
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 25% to 33% for hip replacement, 23% to 28% for knee 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. Flannery Compares
Procedure volume compared to the Wisconsin state average.
Volume Trend Analysis
Dr. Flannery's Medicare-recorded procedure volume has trended upward over 7 years, increasing 300% from 13 procedures in 2018 to 52 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 Hip Replacement
If you are considering hip replacement surgery, these evidence-based guides can help you prepare and recover:
Understanding the progression from conservative treatments to surgical intervention, and how to determine when hip replacement becomes the right choice.
What to Expect on the Day of SurgeryA step-by-step walkthrough of your surgical day, from pre-op preparation through anesthesia, the procedure itself, and the first hours of recovery.
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.
Medicare Coverage for Joint ReplacementWhat Medicare Part A and Part B cover for joint replacement surgery, including hospital stays, surgeon fees, anesthesia, and physical therapy.
Hip Replacement Recovery Overview
Recovery timelines vary by patient, but here is a general overview of what to expect after hip replacement surgery:
Individual recovery varies based on overall health, age, and adherence to physical therapy. View full hip replacement recovery guide and product recommendations
Frequently Asked Questions About Dr. Flannery
How does Dr. Flannery's procedure volume compare to other Wisconsin surgeons?
Dr. Flannery has performed 52 Medicare-verified joint replacement procedures. This is in line with the Wisconsin average of 51 procedures per surgeon. Dr. Flannery ranks #74 out of 189 orthopedic surgeons in Wisconsin.
What types of joint replacement does Dr. Flannery perform?
Dr. Flannery's Medicare data shows procedures in hip replacement (33 cases) and knee replacement (19 cases).
Are there other orthopedic surgeons near Dr. Flannery in Green Bay?
Yes. There are 19 orthopedic surgeons in Green Bay 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. Flannery 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 25% to 33% for hip replacement, 23% to 28% for knee replacement, which puts Dr. Flannery's total volume across all insurers at roughly 170 to 210 procedures against the 52 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. Flannery's procedure volume changed over time?
Yes. Dr. Flannery's Medicare-recorded volume has increased from 13 procedures in 2018 to 52 in the most recent data, a 300% increase over 7 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 64 procedures in 2023.
Does Dr. Flannery perform more than one type of joint replacement?
Yes. Dr. Flannery's Medicare data shows procedures in hip replacement (33 cases), knee replacement (19 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Flannery affiliated with?
According to CMS facility affiliation data, Dr. Flannery is affiliated with St Marys Hospital Medical Ctr, Door County Medical Center, Aurora Medical Center Bay Area, Osf Saint Francis Hospital, Aurora Baycare Medical Ctr. Dr. Flannery maintains hospital privileges across state lines, indicating a practice that serves patients in multiple states.
How does Dr. Flannery compare to other orthopedic surgeons in Green Bay?
Among the 19 orthopedic surgeons in Green Bay, Dr. Flannery ranks #6 by total Medicare procedure volume. The highest-volume surgeon in Green Bay has 100 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Flannery practices?
St Marys Hospital Medical Ctr (4 out of 5 CMS stars, insufficient case volume for complication rate comparison); Door County Medical Center (5 out of 5 CMS stars, insufficient case volume for complication rate comparison); Aurora Medical Center Bay Area (3 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 Green Bay, Wisconsin
Dr. Flannery's 52 Medicare procedures are below the Green Bay average of 75. The table below compares verified procedure volumes for orthopedic surgeons practicing in Green Bay.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Kirk Dimitris | 100 | Hip, Knee |
| Dr. Michael Schnaubelt | 100 | Hip, Knee |
| Dr. Michael Tressler | 81 | Hip, Knee, Shoulder |
| Dr. Chad Zehms | 72 | Hip, Knee, Shoulder |
| Dr. Kenneth Kleist | 67 | Hip, Knee |
| Dr. Matthew Colligan | 51 | 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.