“Primary care is about patient advocacy, education, empowerment, and compassionate care. Those are empty buzzwords without listening to patients, understanding them and acting in their best interest.”

Board Certification

  • Internal Medicine

Area of Expertise

  • Primary Care

Education

Residency

Georgetown University Hospital
Internal Medicine
Washington, DC
1985

Internship

Dartmouth-Mary Hitchcock Medical Center
Internal Medicine
Lebanon, NH
1983

Medical School

Georgetown University
Doctor of Medicine
Washington, DC
1982

Undergraduate School

Bucknell University
Bachelor of the Arts, English
Lewisburg, PA
1978

Hospitals Affiliated With

Georgetown University Hospital
Sibley Memorial Hospital

Honor Society

Alpha Omega Alpha
1995

Academic Appointment

Georgetown University
Clinical Instructor, Department of Medicine
1990 – 2016

Personal Interests

To Dr. Cullen, his family is above all other interests. He owns golf clubs and 1/8 of a boat.

Biography

Dr. Dennis Cullen was born and raised in Washington, DC. He was educated at Blessed Sacrament and Georgetown Prep, only important to other natives. He obtained a B.A. at Bucknell University, M.D. at Georgetown University, and post-doctoral training at Dartmouth University and Georgetown.

He served as Chief Medical Officer of the DEA and four years in the National Health Service prior to returning to practice with Drs. Cullen and Umosella. He is in his tenth year as Assistant Team Physician and Team Internist for the Washington Nationals.