Dr. Benjamin Assenmacher, M.D.
Contact & Location
Oregon, OH 43616
Dr. Benjamin Assenmacher is a board-certified orthopedic surgeon practicing in Oregon, Ohio. A Medicare provider since 2011, Dr. Assenmacher has performed 27 Medicare-verified knee replacements (#176 in Ohio) and 17 hip replacements, for a combined total of 44 procedures.
In Ohio, Dr. Assenmacher performs below average in knee (27 vs 41 avg), below average in hip (17 vs 32 avg).
Dr. Assenmacher's reported Medicare volume is split between knee replacements (27 cases) and hip replacements (17 cases).
Oregon is home to 5 orthopedic surgeons in the current Medicare dataset. Patients in the Oregon area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs. Dr. Assenmacher also maintains hospital privileges in OH and MI, indicating a regional practice that extends beyond Ohio.
Dr. Assenmacher's Medicare data spans 6 years, beginning in 2019. Volume peaked at 81 procedures in 2023 before settling at 44 in the most recent data. Changes in Medicare reporting, payer mix shifts, or practice focus adjustments can all influence year-to-year volume.
Dr. Assenmacher's 27 knee replacement procedures is below the national average of 45 among 6,599 surgeons. Medicare data captures roughly a third of all joint replacements, so actual volume is likely higher.
Verified Case Volume Trends (2013-Current)
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. Assenmacher Compares
Procedure volume compared to the Ohio state average.
Volume Trend Analysis
Dr. Assenmacher's recorded volume peaked at 81 procedures in 2023 and stood at 44 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.
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.
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. Assenmacher
How does Dr. Assenmacher's procedure volume compare to other Ohio surgeons?
Dr. Assenmacher has performed 44 Medicare-verified joint replacement procedures. The Ohio average is 59 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Assenmacher ranks #191 out of 370 orthopedic surgeons in Ohio.
What types of joint replacement does Dr. Assenmacher perform?
Dr. Assenmacher's Medicare data shows procedures in knee replacement (27 cases) and hip replacement (17 cases).
Are there other orthopedic surgeons near Dr. Assenmacher in Oregon?
Yes. There are 5 orthopedic surgeons in Oregon 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 Ohio surgeons.
What does the Medicare data for Dr. Assenmacher 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. Assenmacher's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 44 procedures shown here.
Has Dr. Assenmacher's procedure volume changed over time?
Dr. Assenmacher's Medicare-recorded volume peaked at 81 procedures in 2023 and was 44 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. Assenmacher perform more than one type of joint replacement?
Yes. Dr. Assenmacher's Medicare data shows procedures in knee replacement (27 cases), hip replacement (17 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Assenmacher affiliated with?
According to CMS facility affiliation data, Dr. Assenmacher is affiliated with Toledo Hospital The, Bay Park Community Hospital, Fulton County Health Center, Promedica Monroe Regional Hospital. Dr. Assenmacher maintains hospital privileges across state lines, indicating a practice that serves patients in multiple states.
How does Dr. Assenmacher compare to other orthopedic surgeons in Oregon?
Among the 5 orthopedic surgeons in Oregon, Dr. Assenmacher ranks #4 by total Medicare procedure volume. The highest-volume surgeon in Oregon has 130 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Assenmacher practices?
Toledo Hospital The (4 out of 5 CMS stars, hip/knee complication rate similar to national average); Bay Park Community Hospital (3 out of 5 CMS stars, insufficient case volume for complication rate comparison); Fulton County Health Center (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 Oregon, Ohio
Dr. Assenmacher's 44 Medicare procedures are below the Oregon average of 65. The table below compares verified procedure volumes for orthopedic surgeons practicing in Oregon.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Joseph Assenmacher | 130 | Hip, Knee, Shoulder |
| Dr. Craig Assenmacher | 74 | Hip, Knee, Shoulder |
| Dr. Bradley Morse | 60 | Hip, Knee |
| Dr. Enesi Momoh | 16 | 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.