Dr. Marcus Greatens, MD
Contact & Location
715-838-5222
Eau Claire, WI 54703
About Dr. Greatens
Dr. Marcus Greatens is a board-certified orthopedic surgeon practicing in Eau Claire, Wisconsin. A Medicare provider since 2014, Dr. Greatens performed 59 Medicare-verified knee replacements (#23 in Wisconsin) and 28 hip replacements in the latest annual CMS data, for a combined total of 87 procedures.
In Wisconsin, Dr. Greatens performs above the state average in knee (59 vs 36), near the state average in hip (28 vs 29).
Dr. Greatens's reported Medicare volume is split between knee replacements (59 cases) and hip replacements (28 cases).
Beyond general orthopedic surgery, Dr. Greatens holds additional credentials in Adult Reconstructive Orthopaedic Surgery, reflecting subspecialty training that may benefit patients with complex joint conditions.
Eau Claire is home to 5 orthopedic surgeons in the current Medicare dataset. Patients in the Eau Claire area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. Greatens extend back to 2020, covering 5 years of data. Over that period, recorded procedure volume increased from 16 to 87 in the most recent data, a 444% increase. This sustained growth reflects an expanding joint replacement practice.
Among 6,599 knee replacement surgeons tracked nationally, Dr. Greatens's 59 verified procedures is above the national average of 45.
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 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 16 | 0 |
| 2021 | 27 | 23 |
| 2022 | 32 | 45 |
| 2023 | 30 | 48 |
| 2024 | 28 | 59 |
Verified Medicare Cases
How is this estimated?
Medicare Part B fee-for-service claims represent approximately 33–37% of all joint replacements performed nationally (source: CMS data, AJRR). This range estimates the surgeon's total practice volume across all payers. The verified Medicare count above is the definitive, audited figure.
How Dr. Greatens Compares
Procedure volume compared to the Wisconsin state average.
Volume Trend Analysis
Dr. Greatens's Medicare-recorded procedure volume has trended upward over 5 years, increasing 444% from 16 procedures in 2020 to 87 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.
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.
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 Coverage for Joint ReplacementWhat Medicare Part A and Part B cover for joint replacement surgery, including hospital stays, surgeon fees, anesthesia, and physical therapy.
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. Greatens
How does Dr. Greatens's procedure volume compare to other Wisconsin surgeons?
Dr. Greatens has performed 87 Medicare-verified joint replacement procedures. This is significantly above the Wisconsin average of 51 procedures per surgeon. Dr. Greatens ranks #27 out of 189 orthopedic surgeons in Wisconsin.
What types of joint replacement does Dr. Greatens perform?
Dr. Greatens's Medicare data shows procedures in knee replacement (59 cases) and hip replacement (28 cases).
Are there other orthopedic surgeons near Dr. Greatens in Eau Claire?
Yes. There are 5 orthopedic surgeons in Eau Claire 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. Greatens represent?
The procedure counts shown are based on the most recent Medicare Part B fee-for-service claims data, published by the Centers for Medicare and Medicaid Services (CMS). This captures approximately 33–37% of all joint replacements performed nationally. Dr. Greatens's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 87 procedures shown here.
Has Dr. Greatens's procedure volume changed over time?
Yes. Dr. Greatens's Medicare-recorded volume has increased from 16 procedures in 2020 to 87 in the most recent data, a 444% increase over 5 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 87 procedures in 2024.
Does Dr. Greatens perform more than one type of joint replacement?
Yes. Dr. Greatens's Medicare data shows procedures in knee replacement (59 cases), hip replacement (28 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Greatens affiliated with?
According to CMS facility affiliation data, Dr. Greatens is affiliated with Mayo Clinic Health System In Eau Claire, Mayo Clinic Health System-Chippewa Valley, Mayo Clinic Health System-Red Cedar, Mayo Clinic Health System-Northland.
How does Dr. Greatens compare to other orthopedic surgeons in Eau Claire?
Among the 5 orthopedic surgeons in Eau Claire, Dr. Greatens ranks #2 by total Medicare procedure volume. Dr. Greatens is among the highest-volume surgeons in Eau Claire.
What are the quality ratings for hospitals where Dr. Greatens practices?
Mayo Clinic Health System In Eau Claire (5 out of 5 CMS stars, hip/knee complication rate similar to national average); Mayo Clinic Health System-Red Cedar (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 Eau Claire, Wisconsin
Dr. Greatens's 87 Medicare procedures are above the Eau Claire average of 71. The table below compares verified procedure volumes for orthopedic surgeons practicing in Eau Claire.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Jonathan Webb | 94 | Hip, Knee |
| Dr. Thomas Bramwell | 74 | Hip, Knee |
| Dr. Rusty Brand | 73 | Hip, Knee |
| Dr. Cory Stewart | 28 | 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.