Lung Transplant Specialists
Steven D Nathan, 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: Pulmonary Disease, Critical Care Medicine, Internal Medicine
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Clinical Interests: Lung Problems and Treatment
Years of Experience: 39
Areas of special interest identified by the physician or additional training completed.
Kareem I. Ahmad, 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: Pulmonary Disease, Critical Care Medicine, Internal Medicine
Years of Experience: 9
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Shambhu Aryal, 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: Pulmonary Disease, Critical Care Medicine, Internal Medicine
Years of Experience: 15
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Anne Whitney Brown, 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: Critical Care Medicine, Pulmonary Disease
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Clinical Interests: Lung Problems and Treatment
Years of Experience: 17
Areas of special interest identified by the physician or additional training completed.
Christopher S. King, 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: Critical Care Medicine, Pulmonary Disease, Internal Medicine
Years of Experience: 18
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Oksana A. Shlobin, 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: Pulmonary Disease
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Clinical Interests: Lung Problems and Treatment
Years of Experience: 21
Areas of special interest identified by the physician or additional training completed.
Lung Transplant Surgeons
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
Years of Experience: 18
Areas of special interest identified by the physician or additional training completed.
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, Surgical Critical Care
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Clinical Interests: Adult Heart Surgery
Years of Experience: 22
Areas of special interest identified by the physician or additional training completed.
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
Years of Experience: 20
Areas of special interest identified by the physician or additional training completed.
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
Years of Experience: 21
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Transplant Infectious Disease
Shalika Basnayake Katugaha, MD
Specialty: Infectious Disease
Board-certified specialties granted by an ABMS Member Board. Learn more about board certification.
Clinical Interests: General Medicine
Years of Experience: 16
Areas of special interest identified by the physician or additional training completed.
Nurse Practitioners
Jess Chun, NP , Post-Transplant Nurse Practitioner
Meg Fregoso, NP , Post-Transplant Nurse Practitioner
Lauren Marinak, NP , Inpatient Nurse Practitioner
Nurse Coordinators
Michelle Schreffler, RN , Pre-Transplant Coordinator
Matthew Kott, RN , Pre-Transplant Coordinator
Social Workers
Elizabeth Davies , Social Worker
Susan Perry, LCSW , Disease Management & Transplant Social Worker
Clinical Transplant and Lung Disease Pharmacist
