Dr. Zachary Arntson, DO
Contact & Location
Otsego, MN 55330
Dr. Zachary Arntson is a board-certified orthopedic surgeon practicing in Otsego, Minnesota. A Medicare provider since 2010, Dr. Arntson has performed 18 Medicare-verified knee replacements (#100 in Minnesota) and 14 hip replacements, for a combined total of 32 procedures.
In Minnesota, Dr. Arntson performs below average in knee (18 vs 30 avg), below average in hip (14 vs 26 avg).
Dr. Arntson's reported Medicare volume is split between knee replacements (18 cases) and hip replacements (14 cases).
Otsego is home to 3 orthopedic surgeons in the current Medicare dataset. Patients in the Otsego area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. Arntson extend back to 2016, covering 4 years of data. Over that period, recorded procedure volume increased from 11 to 32 in the most recent data, a 191% increase. This sustained growth reflects an expanding joint replacement practice.
Dr. Arntson's 18 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. Arntson Compares
Procedure volume compared to the Minnesota state average.
Volume Trend Analysis
Dr. Arntson's Medicare-recorded procedure volume has trended upward over 4 years, increasing 191% from 11 procedures in 2016 to 32 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.
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 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. Arntson
How does Dr. Arntson's procedure volume compare to other Minnesota surgeons?
Dr. Arntson has performed 32 Medicare-verified joint replacement procedures. The Minnesota average is 43 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Arntson ranks #100 out of 187 orthopedic surgeons in Minnesota.
What types of joint replacement does Dr. Arntson perform?
Dr. Arntson's Medicare data shows procedures in knee replacement (18 cases) and hip replacement (14 cases).
Are there other orthopedic surgeons near Dr. Arntson in Otsego?
Yes. There are 3 orthopedic surgeons in Otsego 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 Minnesota surgeons.
What does the Medicare data for Dr. Arntson 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. Arntson's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 32 procedures shown here.
Has Dr. Arntson's procedure volume changed over time?
Yes. Dr. Arntson's Medicare-recorded volume has increased from 11 procedures in 2016 to 32 in the most recent data, a 191% increase over 4 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 32 procedures in 2024.
Does Dr. Arntson perform more than one type of joint replacement?
Yes. Dr. Arntson's Medicare data shows procedures in knee replacement (18 cases), hip replacement (14 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Arntson affiliated with?
According to CMS facility affiliation data, Dr. Arntson is affiliated with Mercy Hospital.
How does Dr. Arntson compare to other orthopedic surgeons in Otsego?
Among the 3 orthopedic surgeons in Otsego, Dr. Arntson ranks #1 by total Medicare procedure volume. Dr. Arntson has the highest verified Medicare volume in the city.
What are the quality ratings for hospitals where Dr. Arntson practices?
Mercy Hospital (3 out of 5 CMS stars, hip/knee complication rate similar to national average). These are hospital-level quality metrics from CMS Hospital Compare and do not reflect individual surgeon outcomes.
Other Orthopedic Surgeons in Otsego, Minnesota
Dr. Arntson's 32 Medicare procedures are above the Otsego average of 22. The table below compares verified procedure volumes for orthopedic surgeons practicing in Otsego.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. David Edwards | 17 | Knee |
| Dr. Patrick Okeefe | 16 | 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.