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8110 Gatehouse Road, Falls Church, VA 22042

Meet Our Team

Medical Oncology

John F Deeken, 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: Medical Oncology
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Clinical Interests: Head and Neck Cancer, Personalized Medicine, Pharmacogenetics
Areas of special interest identified by the physician or additional training completed.
Years of Experience: 20

Cancer Surgery

William J. Purkert, 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: Surgery
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Clinical Interests: Thyroid Cancer, Thyroid Disorders
Areas of special interest identified by the physician or additional training completed.
Years of Experience: 42

Jina Kim, 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: Surgery
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Clinical Interests: Children's Thyroid Cancer, Children's Thyroid Problems and Treatment, Minimally Invasive Surgery, Thyroid Cancer, Thyroid Disorders
Areas of special interest identified by the physician or additional training completed.
Years of Experience: 9

Radiation Oncology

Gopal Bajaj, MD

Gopal K. Bajaj, MD

Specialty: Radiation Oncology
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Clinical Interests: Ear Nose and Throat, Head and Neck Cancer, Lung Cancer, Pancreatic Cancer, Prostate Cancer
Areas of special interest identified by the physician or additional training completed.
Years of Experience: 21
Tobias Chapman, MD

Tobias R Chapman, MD

Specialty: Radiation Oncology
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Clinical Interests: Colorectal Cancer, Gastrointestinal (GI) Cancer, Head and Neck Cancer, Prostate Cancer, Skin Cancer
Areas of special interest identified by the physician or additional training completed.
Years of Experience: 9

Endocrinology

Samantha A Diamond-Rossi, 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: Endocrinology, Diabetes and Metabolism, Internal Medicine
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Years of Experience: 7

Nuclear Medicine/Radiology

Zenaida Ferguson , Nurse Navigator

Karina Benitez , New Patient Coordinator