Dr. Michael Sumko, D.O.
Dr. Michael Sumko is a board-certified orthopedic surgeon practicing in Tempe, Arizona. A Medicare provider since 2009, Dr. Sumko has performed 120 Medicare-verified knee replacements (#10 in Arizona) and 27 hip replacements, for a combined total of 147 procedures.
In Arizona, Dr. Sumko performs well above average in knee (120 vs 49 avg), below average in hip (27 vs 37 avg).
Dr. Sumko's practice is heavily focused on knee replacement surgery, which accounts for 82% of reported Medicare volume.
Dr. Sumko is the only orthopedic surgeon in Tempe represented in the current Medicare dataset, serving as the primary local option for patients considering joint replacement surgery in the area.
Medicare records for Dr. Sumko extend back to 2015, covering 9 years of data. Over that period, recorded procedure volume increased from 37 to 147 in the most recent data, a 297% increase. This sustained growth reflects an expanding joint replacement practice.
Among 6,720 knee replacement surgeons tracked nationally, Dr. Sumko's 120 verified procedures is more than 2x 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. Sumko Compares
Procedure volume compared to the Arizona state average.
Contact & Location
Tempe, AZ 85281
Verified Case Volume Trends (2013-Current)
Volume Trend Analysis
Dr. Sumko's Medicare-recorded procedure volume has trended upward over 9 years, increasing 297% from 37 procedures in 2015 to 147 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.
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.
Pain Management After Joint ReplacementA comprehensive guide to managing post-surgical pain through medication, physical therapy, cold therapy, and non-pharmacological strategies.
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. Sumko
How does Dr. Sumko's procedure volume compare to other Arizona surgeons?
Dr. Sumko has performed 147 Medicare-verified joint replacement procedures. This is more than 2x the Arizona average of 68 procedures per surgeon. Dr. Sumko ranks #23 out of 193 orthopedic surgeons in Arizona.
What types of joint replacement does Dr. Sumko perform?
Dr. Sumko's Medicare data shows procedures in knee replacement (120 cases) and hip replacement (27 cases).
How experienced is Dr. Sumko with knee replacement surgery?
Dr. Sumko ranks #10 in Arizona for knee replacement with 120 Medicare-verified procedures. This high ranking among 193 state surgeons indicates significant experience with this specific procedure.
Where is Dr. Sumko's practice located?
Dr. Sumko practices in Tempe, Arizona. The office is located at 1492 S Mill Ave Ste 113, Tempe, AZ 85281. Patients in the surrounding area can consult Dr. Sumko for joint replacement evaluation.
What does the Medicare data for Dr. Sumko 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. Sumko's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 147 procedures shown here.
Has Dr. Sumko's procedure volume changed over time?
Yes. Dr. Sumko's Medicare-recorded volume has increased from 37 procedures in 2015 to 147 in the most recent data, a 297% increase over 9 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 147 procedures in 2023.
Does Dr. Sumko perform more than one type of joint replacement?
Yes. Dr. Sumko's Medicare data shows procedures in knee replacement (120 cases), hip replacement (27 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Sumko affiliated with?
According to CMS facility affiliation data, Dr. Sumko is affiliated with Abrazo Scottsdale Campus.
What are the quality ratings for hospitals where Dr. Sumko practices?
Abrazo Scottsdale Campus (2 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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