Dr. Michael MacKay, M.D.
Dr. Michael MacKay is a board-certified orthopedic surgeon practicing in Oak Ridge, Tennessee. Dr. MacKay has performed 41 Medicare-verified knee replacements (#67 in Tennessee) and 13 hip replacements, for a combined total of 54 procedures.
In Tennessee, Dr. MacKay performs near average in knee (41 vs 45 avg), below average in hip (13 vs 36 avg).
Dr. MacKay's practice is heavily focused on knee replacement surgery, which accounts for 76% of reported Medicare volume.
Oak Ridge is home to 3 orthopedic surgeons in the current Medicare dataset. Patients in the Oak Ridge area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. MacKay extend back to 2013, covering 11 years of data. Over that period, recorded procedure volume increased from 13 to 54 in the most recent data, a 315% increase. This sustained growth reflects an expanding joint replacement practice.
Among 6,720 knee replacement surgeons tracked nationally, Dr. MacKay's 41 verified procedures is near 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. MacKay Compares
Procedure volume compared to the Tennessee state average.
Contact & Location
Oak Ridge, TN 37830
Verified Case Volume Trends (2013-Current)
Volume Trend Analysis
Dr. MacKay's Medicare-recorded procedure volume has trended upward over 11 years, increasing 315% from 13 procedures in 2013 to 54 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.
Nutrition and Recovery After Joint ReplacementHow protein intake, anti-inflammatory foods, hydration, and targeted supplements support bone healing and tissue repair after surgery.
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. MacKay
How does Dr. MacKay's procedure volume compare to other Tennessee surgeons?
Dr. MacKay has performed 54 Medicare-verified joint replacement procedures. This is in line with the Tennessee average of 64 procedures per surgeon. Dr. MacKay ranks #94 out of 214 orthopedic surgeons in Tennessee.
What types of joint replacement does Dr. MacKay perform?
Dr. MacKay's Medicare data shows procedures in knee replacement (41 cases) and hip replacement (13 cases).
Are there other orthopedic surgeons near Dr. MacKay in Oak Ridge?
Yes. There are 3 orthopedic surgeons in Oak Ridge 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 Tennessee surgeons.
What does the Medicare data for Dr. MacKay 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. MacKay's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 54 procedures shown here.
Has Dr. MacKay's procedure volume changed over time?
Yes. Dr. MacKay's Medicare-recorded volume has increased from 13 procedures in 2013 to 54 in the most recent data, a 315% increase over 11 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 54 procedures in 2019.
Does Dr. MacKay perform more than one type of joint replacement?
Yes. Dr. MacKay's Medicare data shows procedures in knee replacement (41 cases), hip replacement (13 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. MacKay affiliated with?
According to CMS facility affiliation data, Dr. MacKay is affiliated with Methodist Medical Center Of Oak Ridge, Roane Medical Center, Parkwest Medical Center.
How does Dr. MacKay compare to other orthopedic surgeons in Oak Ridge?
Among the 3 orthopedic surgeons in Oak Ridge, Dr. MacKay ranks #1 by total Medicare procedure volume. Dr. MacKay has the highest verified Medicare volume in the city.
What are the quality ratings for hospitals where Dr. MacKay practices?
Methodist Medical Center Of Oak Ridge (3 out of 5 CMS stars, hip/knee complication rate similar to national average); Roane Medical Center (4 out of 5 CMS stars, insufficient case volume for complication rate comparison); Parkwest Medical Center (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 Oak Ridge, Tennessee
Dr. MacKay's 54 Medicare procedures are above the Oak Ridge average of 49. The table below compares verified procedure volumes for orthopedic surgeons practicing in Oak Ridge.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Patrick Moody | 49 | Hip, Knee |
| Dr. Randall Robbins | 43 | Knee |
Patient Reviews & Ratings
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