Our Team
Meet the highly skilled adult and pediatric cardiac surgeons, thoracic surgeons and interventional pulmonologists who make up the team of experts at Inova Cardiac and Thoracic Surgery.
Lucas Collazo, MD
A member of Inova Medical Group
Specialty: Thoracic and Cardiac Surgery, Congenital Cardiac Surgery
Clinical Interests: Children's Heart, Children's Heart Surgery
Years of Experience: 30
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.
Alan Speir, MD
A member of Inova Medical Group
Specialty: Thoracic and Cardiac Surgery
Clinical Interests: Adult Heart Surgery
Years of Experience: 44
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.
Eric Sarin, MD
A member of Inova Medical Group
Specialty: Thoracic and Cardiac Surgery, Surgical Critical Care
Clinical Interests: Adult Heart Surgery
Years of Experience: 21
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.
Liam Ryan, MD
A member of Inova Medical Group
Specialty: Thoracic and Cardiac Surgery, Surgery
Clinical Interests: Adult Heart Surgery
Years of Experience: 17
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.
Ramesh Singh, MD
A member of Inova Medical Group
Specialty: Thoracic and Cardiac Surgery, Surgery
Clinical Interests: Adult Heart Surgery
Years of Experience: 19
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.
Amit Mahajan, MD
A member of Inova Medical Group
Specialty: Pulmonary Disease, Internal Medicine, Critical Care Medicine
Clinical Interests: Lung Cancer, Lung Problems and Treatment, Minimally Invasive Surgery
Years of Experience: 13
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.
Hassan Tetteh, MD
A member of Inova Medical Group
Specialty: Clinical Informatics, Thoracic and Cardiac Surgery, Surgery
Years of Experience: 21
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.
Kathleen Petro, MD
A member of Inova Medical Group
Specialty: Thoracic and Cardiac Surgery
Clinical Interests: Adult Heart Surgery
Years of Experience: 26
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.
Marcelo Cardarelli, MD
A member of Inova Medical Group
Clinical Interests: Children's Heart, Children's Heart Surgery
Years of Experience: 38
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.