Dr. Mark Theiss is a board-certified orthopedic surgeon practicing in Falls Church, Virginia. Dr. Theiss has performed 21 Medicare-verified knee replacements (#143 in Virginia) and 11 hip replacements, for a combined total of 32 procedures.
Dr. Theiss has recorded 32 Medicare fee-for-service procedures. Medicare data represents approximately one-third of all joint replacements nationwide, so these counts reflect only a portion of a surgeon's full practice. Virginia has 223 orthopedic surgeons in the current dataset.
Dr. Theiss's reported Medicare volume is split between knee replacements (21 cases) and hip replacements (11 cases).
Dr. Theiss is the only orthopedic surgeon in Falls Church represented in the current Medicare dataset, serving as the primary local option for patients considering joint replacement surgery in the area.
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.
Verified Case Volume Trends (2013-Current)
Frequently Asked Questions About Dr. Theiss
How does Dr. Theiss's procedure volume compare to other Virginia surgeons?
Dr. Theiss has performed 32 Medicare-verified joint replacement procedures. The Virginia average is 83 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Theiss ranks #151 out of 223 orthopedic surgeons in Virginia.
What types of joint replacement does Dr. Theiss perform?
Dr. Theiss's Medicare data shows procedures in knee replacement (21 cases) and hip replacement (11 cases).
Where is Dr. Theiss's practice located?
Dr. Theiss practices in Falls Church, Virginia. The office is located at 3300 Gallows Rd, Falls Church, VA 22042. Patients in the surrounding area can consult Dr. Theiss for joint replacement evaluation.
What does the Medicare data for Dr. Theiss 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. Theiss's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 32 procedures shown here.
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Falls Church, VA 22042