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8110 Gatehouse Road, Falls Church, VA 22042

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: 47

Adult Cardiac Surgeons

Katherine M Klein, 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 (Eligible), Surgical Critical Care, Surgery
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Years of Experience: 15
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: 29
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
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: 20
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: 24
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
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: 22
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: 47

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: 23

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: 33

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: 41

Advanced Practice Providers

Amanda Bailey, NP

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: Nurse Practitioner
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.

Sandra L Bobba, FNP

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: Family Nurse Practitioner
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.

Deborah Celentano, NP

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: Nurse Practitioner, Nurse Practitioner
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.

Elizabeth A Gill, PA

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: Physician Assistant
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.

Natalie M Grieb, FNP

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: Family Nurse Practitioner
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.

Kathryn Jolda, FNP

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: Family Nurse Practitioner
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.

Jamie T Keith, NP

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: Nurse Practitioner
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.

Christie Le, FNP

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: Family Nurse Practitioner
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.