Knee
Dr. Mark Sumida, MD
Dr. Mark Sumida is a board-certified orthopedic surgeon practicing in Hixson, Tennessee. Dr. Sumida has performed 18 Medicare-verified knee replacements, ranking #133 in Tennessee.
In Tennessee, Dr. Sumida performs below average in knee (18 vs 45 avg).
Dr. Sumida's Medicare data shows a focused knee replacement practice with 18 verified procedures. Surgeons who concentrate on a single procedure type often develop deep procedural expertise, though total practice volume may include additional procedures not captured in Medicare fee-for-service data.
Dr. Sumida is the only orthopedic surgeon in Hixson represented in the current Medicare dataset, serving as the primary local option for patients considering joint replacement surgery in the area.
Dr. Sumida's Medicare record spans 9 years from 2015 through 2023. Procedure volume has remained consistent during that period, ranging from 12 to 19 procedures per year, reflecting a steady joint replacement practice.
Dr. Sumida's 18 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. Sumida Compares
Procedure volume compared to the Tennessee state average.
Contact & Location
Hixson, TN 37343
Verified Case Volume Trends (2013-Current)
Volume Trend Analysis
Dr. Sumida's procedure volume has been consistent across 9 years of Medicare data, ranging from 12 to 19 procedures per year. This stability suggests a well-established joint replacement practice.
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. Sumida
How does Dr. Sumida's procedure volume compare to other Tennessee surgeons?
Dr. Sumida has performed 18 Medicare-verified joint replacement procedures. The Tennessee average is 64 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Sumida ranks #174 out of 214 orthopedic surgeons in Tennessee.
What types of joint replacement does Dr. Sumida perform?
Dr. Sumida's reported Medicare volume is focused on knee replacement, with 18 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
Where is Dr. Sumida's practice located?
Dr. Sumida practices in Hixson, Tennessee. The office is located at 1724 Hamill Road Suite 204, Hixson, TN 37343. Patients in the surrounding area can consult Dr. Sumida for joint replacement evaluation.
What does the Medicare data for Dr. Sumida 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. Sumida's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 18 procedures shown here.
Has Dr. Sumida's procedure volume changed over time?
Dr. Sumida's procedure volume has been relatively stable over 9 years of Medicare data, ranging from 12 to 19 procedures per year between 2015 and 2023. Consistent volume over multiple years reflects a steady joint replacement practice.
Which hospitals is Dr. Sumida affiliated with?
According to CMS facility affiliation data, Dr. Sumida is affiliated with Memorial Healthcare System, Inc.
What are the quality ratings for hospitals where Dr. Sumida practices?
Memorial Healthcare System, Inc (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.
Patient Reviews & Ratings
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