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Inova Fairfax Hospital Joint Replacement Team

Mark Theiss, MD

Mark Theiss, MD

A member of Inova Medical Group
The doctors of Inova Medical Group are Inova’s premier primary care and specialty physicians, offering top-notch medical expertise, full access to Inova facilities, and the convenience of integrated electronic medical records.
Specialty: Orthopaedic Sports Medicine, Orthopaedic Surgery
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Clinical Interests: Hip Replacement, Joint Replacement Surgery, Knee Problems/Surgery and Treatments, Knee Replacement, Shoulder Problems/Surgery and Treatments
Areas of special interest identified by the physician or additional training completed.
Years of Experience: 44
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Michael Cassidy, MD

Specialty: Orthopaedic Surgery
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Clinical Interests: Arthritis, Hip Replacement, Joint Replacement Surgery, Knee Problems/Surgery and Treatments, Knee Replacement
Areas of special interest identified by the physician or additional training completed.
Years of Experience: 40

Mehrdad Malek, MD

Specialty: Orthopaedic Surgery
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Clinical Interests: Arthritis, Knee Problems/Surgery and Treatments, Knee Replacement
Areas of special interest identified by the physician or additional training completed.
Years of Experience: 47

Steven Neufeld, MD

Specialty: Orthopaedic Surgery
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Clinical Interests: Ankle Problems/Surgery and Treatments, Foot Problems/Surgery and Treatments, Joint Replacement Surgery, Podiatry
Areas of special interest identified by the physician or additional training completed.
Years of Experience: 24
Cary Schwartzbach, MD

Cary Schwartzbach, MD

A member of Inova Medical Group
The doctors of Inova Medical Group are Inova’s premier primary care and specialty physicians, offering top-notch medical expertise, full access to Inova facilities, and the convenience of integrated electronic medical records.
Specialty: Orthopaedic Surgery
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Years of Experience: 35