Dr. Zachary Clarke, MD
Contact & Location
San Antonio, TX 78249
Dr. Zachary Clarke is a board-certified orthopedic surgeon practicing in San Antonio, Texas. Dr. Clarke has performed 33 Medicare-verified knee replacements (#220 in Texas) and 16 hip replacements, for a combined total of 49 procedures.
In Texas, Dr. Clarke performs below average in knee (33 vs 42 avg), below average in hip (16 vs 31 avg).
Dr. Clarke's reported Medicare volume is split between knee replacements (33 cases) and hip replacements (16 cases).
San Antonio is home to 41 orthopedic surgeons in the current Medicare dataset. Patients in the San Antonio area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Dr. Clarke first appears in the Medicare dataset in 2024. With 1 year of recorded data, the longitudinal trend is still developing.
Dr. Clarke's 33 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. Clarke Compares
Procedure volume compared to the Texas state average.
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. Clarke
How does Dr. Clarke's procedure volume compare to other Texas surgeons?
Dr. Clarke has performed 49 Medicare-verified joint replacement procedures. This is in line with the Texas average of 57 procedures per surgeon. Dr. Clarke ranks #242 out of 582 orthopedic surgeons in Texas.
What types of joint replacement does Dr. Clarke perform?
Dr. Clarke's Medicare data shows procedures in knee replacement (33 cases) and hip replacement (16 cases).
Are there other orthopedic surgeons near Dr. Clarke in San Antonio?
Yes. There are 41 orthopedic surgeons in San Antonio 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 Texas surgeons.
What does the Medicare data for Dr. Clarke 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. Clarke's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 49 procedures shown here.
Does Dr. Clarke perform more than one type of joint replacement?
Yes. Dr. Clarke's Medicare data shows procedures in knee replacement (33 cases), hip replacement (16 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.
Which hospitals is Dr. Clarke affiliated with?
According to CMS facility affiliation data, Dr. Clarke is affiliated with Ut Health San Antonio Multispecialty & Research Ho, University Health System, Methodist Hospital, Baptist Medical Center.
How does Dr. Clarke compare to other orthopedic surgeons in San Antonio?
Among the 41 orthopedic surgeons in San Antonio, Dr. Clarke ranks #20 by total Medicare procedure volume. The highest-volume surgeon in San Antonio has 383 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Clarke practices?
University Health System (3 out of 5 CMS stars, insufficient case volume for complication rate comparison); Methodist 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 San Antonio, Texas
Dr. Clarke's 49 Medicare procedures are below the San Antonio average of 186. The table below compares verified procedure volumes for orthopedic surgeons practicing in San Antonio.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Christopher Phelps | 383 | Hip, Knee, Shoulder |
| Dr. Bryan Kaiser | 235 | Hip, Knee |
| Dr. Richard Ursone | 191 | Hip, Knee, Shoulder |
| Dr. Casey Taber | 172 | Hip, Knee |
| Dr. Robert Girling | 155 | Hip, Knee |
| Dr. Matthew Morrey | 116 | Hip, 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.