Dr. Karl Roberts, M.D.
Dr. Karl Roberts is a board-certified orthopedic surgeon practicing in Grand Rapids, Michigan. A Medicare provider since 2006, Dr. Roberts has performed 21 Medicare-verified knee replacements (#137 in Michigan) and 11 hip replacements, for a combined total of 32 procedures.
In Michigan, Dr. Roberts performs below average in knee (21 vs 33 avg), below average in hip (11 vs 29 avg).
Dr. Roberts's reported Medicare volume is split between knee replacements (21 cases) and hip replacements (11 cases).
Grand Rapids is home to 19 orthopedic surgeons in the current Medicare dataset. Patients in the Grand Rapids area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Dr. Roberts's Medicare data spans 11 years, beginning in 2013. Volume peaked at 57 procedures in 2017 before settling at 32 in the most recent data. Changes in Medicare reporting, payer mix shifts, or practice focus adjustments can all influence year-to-year volume.
Dr. Roberts's 21 knee replacement procedures is below the national average of 45 among 6,720 surgeons. Medicare data captures roughly a third of all joint replacements, so actual volume is likely higher.
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. Roberts Compares
Procedure volume compared to the Michigan state average.
Contact & Location
Grand Rapids, MI 49546
Verified Case Volume Trends (2013-Current)
Volume Trend Analysis
Dr. Roberts's recorded volume peaked at 57 procedures in 2017 and stood at 32 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.
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.
Pain Management After Joint ReplacementA comprehensive guide to managing post-surgical pain through medication, physical therapy, cold therapy, and non-pharmacological strategies.
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. Roberts
How does Dr. Roberts's procedure volume compare to other Michigan surgeons?
Dr. Roberts has performed 32 Medicare-verified joint replacement procedures. The Michigan average is 48 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Roberts ranks #156 out of 272 orthopedic surgeons in Michigan.
What types of joint replacement does Dr. Roberts perform?
Dr. Roberts's Medicare data shows procedures in knee replacement (21 cases) and hip replacement (11 cases).
Are there other orthopedic surgeons near Dr. Roberts in Grand Rapids?
Yes. There are 19 orthopedic surgeons in Grand Rapids 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. Roberts 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. Roberts's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 32 procedures shown here.
Has Dr. Roberts's procedure volume changed over time?
Dr. Roberts's Medicare-recorded volume peaked at 57 procedures in 2017 and was 32 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. Roberts perform more than one type of joint replacement?
Yes. Dr. Roberts's Medicare data shows procedures in knee replacement (21 cases), hip replacement (11 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Roberts affiliated with?
According to CMS facility affiliation data, Dr. Roberts is affiliated with Corewell Health Grand Rapids Hospitals Butterworth, Corewell Health Big Rapids Hospital.
How does Dr. Roberts compare to other orthopedic surgeons in Grand Rapids?
Among the 19 orthopedic surgeons in Grand Rapids, Dr. Roberts ranks #11 by total Medicare procedure volume. The highest-volume surgeon in Grand Rapids has 101 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Roberts practices?
Corewell Health Grand Rapids Hospitals Butterworth (5 out of 5 CMS stars, hip/knee complication rate similar to national average); Corewell Health Big Rapids Hospital (3 out of 5 CMS stars). These are hospital-level quality metrics from CMS Hospital Compare and do not reflect individual surgeon outcomes.
Other Orthopedic Surgeons in Grand Rapids, Michigan
Dr. Roberts's 32 Medicare procedures are below the Grand Rapids average of 59. The table below compares verified procedure volumes for orthopedic surgeons practicing in Grand Rapids.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Charles Sherry | 101 | Hip, Knee |
| Dr. Kory Johnson | 77 | Hip, Knee |
| Dr. John Mahajan | 65 | Hip, Knee |
| Dr. Thomas Malvitz | 52 | Hip, Knee |
| Dr. Benjamin Strong | 44 | Hip, Knee |
| Dr. Peter Ugolini | 43 | Shoulder |
Patient Reviews & Ratings
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