Dr. Christopher Nanson, MD
Dr. Christopher Nanson is a board-certified orthopedic surgeon practicing in Tigard, Oregon. Dr. Nanson has performed 72 Medicare-verified knee replacements (#8 in Oregon) and 42 hip replacements, for a combined total of 114 procedures.
In Oregon, Dr. Nanson performs above average in knee (72 vs 38 avg), above average in hip (42 vs 34 avg).
Dr. Nanson's reported Medicare volume is split between knee replacements (72 cases) and hip replacements (42 cases).
Tigard is home to 6 orthopedic surgeons in the current Medicare dataset. Patients in the Tigard area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. Nanson extend back to 2013, covering 11 years of data. Over that period, recorded procedure volume increased from 97 to 114 in the most recent data, a 18% increase. This sustained growth reflects an expanding joint replacement practice.
Among 6,720 knee replacement surgeons tracked nationally, Dr. Nanson's 72 verified procedures is above the national average of 45.
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. Nanson Compares
Procedure volume compared to the Oregon state average.
Contact & Location
Tigard, OR 97224
Verified Case Volume Trends (2013-Current)
Volume Trend Analysis
Dr. Nanson's Medicare-recorded procedure volume has trended upward over 11 years, increasing 18% from 97 procedures in 2013 to 114 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.
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. Nanson
How does Dr. Nanson's procedure volume compare to other Oregon surgeons?
Dr. Nanson has performed 114 Medicare-verified joint replacement procedures. This is more than 2x the Oregon average of 57 procedures per surgeon. Dr. Nanson ranks #10 out of 106 orthopedic surgeons in Oregon.
What types of joint replacement does Dr. Nanson perform?
Dr. Nanson's Medicare data shows procedures in knee replacement (72 cases) and hip replacement (42 cases).
How experienced is Dr. Nanson with knee replacement surgery?
Dr. Nanson ranks #8 in Oregon for knee replacement with 72 Medicare-verified procedures. This high ranking among 106 state surgeons indicates significant experience with this specific procedure.
Are there other orthopedic surgeons near Dr. Nanson in Tigard?
Yes. There are 6 orthopedic surgeons in Tigard 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 Oregon surgeons.
What does the Medicare data for Dr. Nanson 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. Nanson's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 114 procedures shown here.
Has Dr. Nanson's procedure volume changed over time?
Yes. Dr. Nanson's Medicare-recorded volume has increased from 97 procedures in 2013 to 114 in the most recent data, a 18% increase over 11 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 114 procedures in 2023.
Does Dr. Nanson perform more than one type of joint replacement?
Yes. Dr. Nanson's Medicare data shows procedures in knee replacement (72 cases), hip replacement (42 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Nanson affiliated with?
According to CMS facility affiliation data, Dr. Nanson is affiliated with Legacy Meridian Park Medical Center, Providence St Vincent Medical Center.
How does Dr. Nanson compare to other orthopedic surgeons in Tigard?
Among the 6 orthopedic surgeons in Tigard, Dr. Nanson ranks #1 by total Medicare procedure volume. Dr. Nanson has the highest verified Medicare volume in the city.
What are the quality ratings for hospitals where Dr. Nanson practices?
Legacy Meridian Park Medical Center (2 out of 5 CMS stars, hip/knee complication rate similar to national average); Providence St Vincent Medical Center (4 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 Tigard, Oregon
Dr. Nanson's 114 Medicare procedures are above the Tigard average of 34. The table below compares verified procedure volumes for orthopedic surgeons practicing in Tigard.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Brian Puskas | 28 | Shoulder |
| Dr. Mark Wagner | 27 | Hip |
| Dr. Jonathan Greenleaf | 15 | Knee |
| Dr. Timothy Beals | 11 | Hip |
| Dr. Scott Grewe | 11 | Knee |
Patient Reviews & Ratings
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