Dr. Robert Morren, M.D.
Contact & Location
269-343-8170
Kalamazoo, MI 49006
Dr. Morren performs more knee replacement procedures than 64% of orthopedic surgeons in Michigan, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #71 of 202 ranked knee surgeons in Michigan.
About Dr. Morren
Practice. Dr. Robert Morren is a board-certified orthopedic surgeon practicing in Kalamazoo, Michigan. The latest annual CMS data records 36 knee replacements and 16 hip replacements, 52 procedures in all. That is #71 in Michigan for knee replacement. A Medicare provider since 2006.
Trend. Medicare records run from 2013 to 2024, 12 years. Volume rose from 25 procedures a year to 52, up 108%.
National context. Among 6,612 knee replacement surgeons tracked nationally, 36 procedures is near the national average of 45.
Local context. Kalamazoo has 12 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 |
|---|---|---|
| 2013 | 0 | 25 |
| 2014 | 0 | 34 |
| 2015 | 0 | 26 |
| 2016 | 0 | 12 |
| 2017 | 16 | 25 |
| 2018 | 12 | 42 |
| 2019 | 23 | 55 |
| 2020 | 0 | 34 |
| 2021 | 11 | 45 |
| 2022 | 20 | 35 |
| 2023 | 19 | 66 |
| 2024 | 16 | 36 |
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, 25% to 33% for hip 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. Morren Compares
Procedure volume compared to the Michigan state average.
Volume Trend Analysis
Dr. Morren's Medicare-recorded procedure volume has trended upward over 12 years, increasing 108% from 25 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.
Home Safety: Creating Your Recovery SanctuaryRoom-by-room modifications, equipment recommendations, and fall-prevention strategies to prepare your home for a safe post-surgical recovery.
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. Morren
How does Dr. Morren's procedure volume compare to other Michigan surgeons?
Dr. Morren has performed 52 Medicare-verified joint replacement procedures. This is in line with the Michigan average of 49 procedures per surgeon. Dr. Morren ranks #89 out of 256 orthopedic surgeons in Michigan.
What types of joint replacement does Dr. Morren perform?
Dr. Morren's Medicare data shows procedures in knee replacement (36 cases) and hip replacement (16 cases).
Are there other orthopedic surgeons near Dr. Morren in Kalamazoo?
Yes. There are 12 orthopedic surgeons in Kalamazoo 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 Michigan surgeons.
What does the Medicare data for Dr. Morren 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, 25% to 33% for hip replacement, which puts Dr. Morren's total volume across all insurers at roughly 180 to 220 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. Morren's procedure volume changed over time?
Yes. Dr. Morren's Medicare-recorded volume has increased from 25 procedures in 2013 to 52 in the most recent data, a 108% increase over 12 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 85 procedures in 2023.
Does Dr. Morren perform more than one type of joint replacement?
Yes. Dr. Morren's Medicare data shows procedures in knee replacement (36 cases), hip replacement (16 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Morren affiliated with?
According to CMS facility affiliation data, Dr. Morren is affiliated with St. Catherine Hospital - Garden City, Kearny County Hospital. Dr. Morren maintains hospital privileges across state lines, indicating a practice that serves patients in multiple states.
How does Dr. Morren compare to other orthopedic surgeons in Kalamazoo?
Among the 12 orthopedic surgeons in Kalamazoo, Dr. Morren ranks #6 by total Medicare procedure volume. The highest-volume surgeon in Kalamazoo has 75 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Morren practices?
St. Catherine Hospital - Garden City (2 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 Kalamazoo, Michigan
Dr. Morren's 52 Medicare procedures are below the Kalamazoo average of 63. The table below compares verified procedure volumes for orthopedic surgeons practicing in Kalamazoo.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Bernard Roehr | 75 | Hip, Knee |
| Dr. William Zuke | 70 | Hip, Knee |
| Dr. Todd Ream | 67 | Hip, Knee |
| Dr. Christopher Betzle | 66 | Hip, Knee |
| Dr. Mark Sytsma | 59 | Shoulder |
| Dr. Steven Kokmeyer | 50 | 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.