Heart and Vascular Institute

8110 Gatehouse Road, Falls Church, VA 22042

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Need Help? Call Us. Call 1-855-MY-INOVA (855-694-6682) Common Questions

Our Team

Our board-certified and fellowship-trained surgeons have performed thousands of procedures, pioneering new treatment and recovery approaches with results rarely matched nationwide.

Inova Heart and Vascular Institute at Inova Fairfax Medical Campus, where we perform our cardiac surgeries, is a high volume cardiac center that consistently receives the highest ratings for quality and superior patient outcomes.

Medical Director, Cardiac Surgery

Alan Speir, MD

Alan M. Speir, 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: Thoracic and Cardiac Surgery
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Clinical Interests: Adult Heart Surgery
Areas of special interest identified by the physician or additional training completed.
Years of Experience: 46

Adult Cardiac Surgeons

Kathleen Petro, MD

Kathleen R. Petro, 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: Thoracic and Cardiac Surgery
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Clinical Interests: Adult Heart Surgery
Areas of special interest identified by the physician or additional training completed.
Years of Experience: 28
Liam Ryan, MD

Liam P Ryan, 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: Thoracic and Cardiac Surgery, Surgery
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Clinical Interests: Adult Heart Surgery
Areas of special interest identified by the physician or additional training completed.
Years of Experience: 19
Eric Sarin, MD

Eric L Sarin, 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: Thoracic and Cardiac Surgery
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Clinical Interests: Adult Heart Surgery
Areas of special interest identified by the physician or additional training completed.
Years of Experience: 23
Ramesh Singh, MD

Ramesh Singh, 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: Thoracic and Cardiac Surgery, Surgery
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Clinical Interests: Adult Heart Surgery
Areas of special interest identified by the physician or additional training completed.
Years of Experience: 21
Alan Speir, MD

Alan M. Speir, 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: Thoracic and Cardiac Surgery
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Clinical Interests: Adult Heart Surgery
Areas of special interest identified by the physician or additional training completed.
Years of Experience: 46
Daniel Tang, MD

Daniel G. Tang, 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: Thoracic and Cardiac Surgery, Surgery
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Years of Experience: 22

Pediatric Cardiac Surgeons

Lucas Collazo, MD

Lucas R Collazo, 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: Thoracic and Cardiac Surgery, Congenital Cardiac Surgery
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Clinical Interests: Children's Heart, Children's Heart Surgery
Areas of special interest identified by the physician or additional training completed.
Years of Experience: 32
Marcelo Cardarelli, MD

Marcelo G. Cardarelli, 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: Thoracic and Cardiac Surgery
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Clinical Interests: Children's Heart, Children's Heart Surgery
Areas of special interest identified by the physician or additional training completed.
Years of Experience: 40