Dr. Gregory Sassmannshausen, M.D.
Contact & Location
260-436-8686
Fort Wayne, IN 46804
Dr. Sassmannshausen performs more knee replacement procedures than 49% of orthopedic surgeons in Indiana, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #95 of 188 ranked knee surgeons in Indiana.
About Dr. Sassmannshausen
Practice. Dr. Gregory Sassmannshausen is a board-certified orthopedic surgeon practicing in Fort Wayne, Indiana. The latest annual CMS data records 33 knee replacements and 19 shoulder replacements, 52 procedures in all. That is #95 in Indiana for knee replacement. A Medicare provider since 2005.
Trend. Medicare records run from 2013 to 2024, 12 years. Volume rose from 24 procedures a year to 52, up 117%.
National context. Among 6,612 knee replacement surgeons tracked nationally, 33 procedures is below the national average of 45. Medicare covers part of all joint replacements, so true volume is likely higher.
Local context. Fort Wayne has 25 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 | Knee Replacement | Shoulder Replacement |
|---|---|---|
| 2013 | 24 | 0 |
| 2014 | 23 | 18 |
| 2015 | 23 | 28 |
| 2016 | 36 | 26 |
| 2017 | 37 | 21 |
| 2018 | 39 | 19 |
| 2019 | 40 | 15 |
| 2020 | 36 | 21 |
| 2021 | 31 | 21 |
| 2022 | 26 | 21 |
| 2023 | 31 | 22 |
| 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 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. Sassmannshausen Compares
Procedure volume compared to the Indiana state average.
Volume Trend Analysis
Dr. Sassmannshausen's Medicare-recorded procedure volume has trended upward over 12 years, increasing 117% from 24 procedures in 2013 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 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.
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.
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. Sassmannshausen
How does Dr. Sassmannshausen's procedure volume compare to other Indiana surgeons?
Dr. Sassmannshausen has performed 52 Medicare-verified joint replacement procedures. This is in line with the Indiana average of 60 procedures per surgeon. Dr. Sassmannshausen ranks #109 out of 224 orthopedic surgeons in Indiana.
What types of joint replacement does Dr. Sassmannshausen perform?
Dr. Sassmannshausen's Medicare data shows procedures in knee replacement (33 cases) and shoulder replacement (19 cases).
Are there other orthopedic surgeons near Dr. Sassmannshausen in Fort Wayne?
Yes. There are 25 orthopedic surgeons in Fort Wayne 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 Indiana surgeons.
What does the Medicare data for Dr. Sassmannshausen 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. Sassmannshausen'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. Sassmannshausen's procedure volume changed over time?
Yes. Dr. Sassmannshausen's Medicare-recorded volume has increased from 24 procedures in 2013 to 52 in the most recent data, a 117% increase over 12 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 62 procedures in 2016.
Does Dr. Sassmannshausen perform more than one type of joint replacement?
Yes. Dr. Sassmannshausen's Medicare data shows procedures in knee replacement (33 cases), shoulder replacement (19 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Sassmannshausen affiliated with?
According to CMS facility affiliation data, Dr. Sassmannshausen is affiliated with The Orthopaedic Hospital Of Lutheran Health Networ, Adams Memorial Hospital, Cameron Health, Marion General Hospital, Parkview Whitley Hospital.
How does Dr. Sassmannshausen compare to other orthopedic surgeons in Fort Wayne?
Among the 25 orthopedic surgeons in Fort Wayne, Dr. Sassmannshausen ranks #16 by total Medicare procedure volume. The highest-volume surgeon in Fort Wayne has 179 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Sassmannshausen practices?
The Orthopaedic Hospital Of Lutheran Health Networ (hip/knee complication rate similar to national average); Adams Memorial Hospital (insufficient case volume for complication rate comparison); Cameron Health (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 Fort Wayne, Indiana
Dr. Sassmannshausen's 52 Medicare procedures are below the Fort Wayne average of 102. The table below compares verified procedure volumes for orthopedic surgeons practicing in Fort Wayne.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. William Berghoff | 179 | Hip, Knee |
| Dr. John Paul Manalo | 150 | Hip, Knee |
| Dr. Jonathan Lynch | 108 | Hip, Knee |
| Dr. Stephen Wright | 81 | Knee, Shoulder |
| Dr. Jerald Cooper | 77 | Knee, Shoulder |
| Dr. David Conner | 70 | Knee, Shoulder |
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.