Dr. Thomas Sullivan, M.D.
Contact & Location
920-430-8120
Green Bay, WI 54311
Dr. Sullivan performs more knee replacement procedures than 61% of orthopedic surgeons in Wisconsin, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #58 of 152 ranked knee surgeons in Wisconsin.
About Dr. Sullivan
Practice. Dr. Thomas Sullivan is a board-certified orthopedic surgeon practicing in Green Bay, Wisconsin. The latest annual CMS data records 34 knee replacements and 13 shoulder replacements, 47 procedures in all. That is #58 in Wisconsin for knee replacement. A Medicare provider since 2006.
Trend. Medicare records run from 2013 to 2024, 12 years. Volume peaked at 92 in 2016 and stands at 47 now. Reporting changes and payer mix can both move that number.
National context. Among 6,612 knee replacement surgeons tracked nationally, 34 procedures is below the national average of 45. Medicare covers part of all joint replacements, so true volume is likely higher.
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.
Verified Case Volume Trends (2013-Current)
| Year | Hip Replacement | Knee Replacement | Shoulder Replacement |
|---|---|---|---|
| 2013 | 16 | 43 | 12 |
| 2014 | 18 | 41 | 13 |
| 2015 | 23 | 44 | 16 |
| 2016 | 23 | 53 | 16 |
| 2017 | 18 | 37 | 18 |
| 2018 | 0 | 49 | 15 |
| 2019 | 15 | 33 | 21 |
| 2020 | 0 | 26 | 15 |
| 2021 | 13 | 25 | 26 |
| 2022 | 20 | 36 | 14 |
| 2023 | 0 | 32 | 0 |
| 2024 | 0 | 34 | 13 |
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, 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. Sullivan Compares
Procedure volume compared to the Wisconsin state average.
Volume Trend Analysis
Dr. Sullivan's recorded volume peaked at 92 procedures in 2016 and stood at 47 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.
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.
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.
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. Sullivan
How does Dr. Sullivan's procedure volume compare to other Wisconsin surgeons?
Dr. Sullivan has performed 47 Medicare-verified joint replacement procedures. This is in line with the Wisconsin average of 51 procedures per surgeon. Dr. Sullivan ranks #89 out of 189 orthopedic surgeons in Wisconsin.
What types of joint replacement does Dr. Sullivan perform?
Dr. Sullivan's Medicare data shows procedures in knee replacement (34 cases) and shoulder replacement (13 cases).
Are there other orthopedic surgeons near Dr. Sullivan 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. Sullivan 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, 29% to 37% for shoulder replacement, which puts Dr. Sullivan's total volume across all insurers at roughly 160 to 190 procedures against the 47 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. Sullivan's procedure volume changed over time?
Dr. Sullivan's Medicare-recorded volume peaked at 92 procedures in 2016 and was 47 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. Sullivan perform more than one type of joint replacement?
Yes. Dr. Sullivan's Medicare data shows procedures in knee replacement (34 cases), shoulder replacement (13 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Sullivan affiliated with?
According to CMS facility affiliation data, Dr. Sullivan is affiliated with St Marys Hospital Medical Ctr, Door County Medical Center, Hshs St Clare Memorial Hospital, Aurora Baycare Medical Ctr, St Vincent Hospital.
How does Dr. Sullivan compare to other orthopedic surgeons in Green Bay?
Among the 19 orthopedic surgeons in Green Bay, Dr. Sullivan ranks #8 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. Sullivan 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). 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. Sullivan's 47 Medicare procedures are below the Green Bay average of 74. 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. Walker Flannery | 52 | 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.