Welcome To Our Practice…
At Cook & Siu PC, we treat the whole patient. With smaller patient numbers and longer patient visits, we are able to focus on the details that keep our patients healthy. Make an appointment with one of our physicians today…
Meet Our Doctors

Betty B. Siu, MD
LANGUAGES SPOKEN
English
Spanish
LOCATIONS FOR
DR. SIU
3450 Old Washington Road
Suite 103
Waldorf, MD 20602
O: (301) 472-4290
F: (240) 607-3609
Board Certification
• Internal Medicine
Areas of Expertise
• Chronic Disease Management
• Gynecology
• Wellness Visits
Education
Residency
Georgetown University Hospital
Internal Medicine
Washington, D.C.
2005
Internship
Washington Hospital Center
Internal Medicine
Washington, D.C.
2004
Medical School
Howard University College of Medicine
Doctor of Medicine
Washington, D.C.
2001
Undergraduate School
University of California Davis
Bachelor of Science in Exercise Physiology
Davis, CA
1995

Richard E. Cook, MD
LOCATIONS FOR
DR. Cook
3450 Old Washington Road
Suite 103
Waldorf, MD 20602
O: (301) 472-4290
F: (240) 607-3609
Board Certification
• Internal Medicine
Areas of Expertise
• Chronic Disease Management
• Male Hormone Replacement
Education
Residency
Union Memorial Hospital – University of Maryland
Internal Medicine
Baltimore, MD
2005
Medical School
Howard University College of Medicine
Doctor of Medicine
Washington, D.C.
2002
Undergraduate School
Howard University
Bachelor of Science in Biology
Washington, D.C.
1995
Professional Associations
President, Charles County Medical Society
American Board of Internal Medicine Diplomate
American Board of Physician Executives Member
American College of Physicians Member
American Medical Association Member
George Washington School of Nursing Courtesy Faculty Appointment
Omega Phi Psi Fraternity Member
Southern Maryland Blue Crabs Baseball Team – Team Physician
State of Maryland Board of Physicians – Physician Peer Member
University of Maryland Medical Center – Associate Program Member
Personal Interests
Family, Church, friends, health, reading, music, and martial arts.
Biography
Dr. Cook is a third-generation physician from Annapolis, Maryland. He now resides in Southern Maryland with his wife Betty and three children: Liana, Sandra, and Marcus.
Richard Cook attended Howard University for his undergraduate education and received his Bachelor of Science in Biology with a minor in Chemistry. While in college, he played lacrosse for the Bisons and was a founding member of the team. Dr. Cook graduated from the Howard UIniversity School of Medicine, and completed his Internal Medicine residency at the union Memorial/University of Maryland Program in Baltimore, Maryland, which is also known for being one of the nation’s top heart institutes, a top 100 hospital ranked by US News, and the official hospital for the Baltimore Ravens football team.
Dr. Cook is also an active memebr of the Omega Psi Phi Fraternity and serves on the International Board of Prostate Cancer Prevention and Awareness. He is President of the Charles County Medical Society, a member of the American Medical Association, American Association of Physician Executives, the Ammerican College of Physicians, and is a Diplomate of the American Board of Internal Medicine. Dr. Cook currently serves as the official Team Physician for the Southern Maryland Blue Crabs Baseball team, is an Associate Program Member at the University Medical Center, holds a Courtesy Faculty Appointment at the George Washington School of Nursing, and is a Physician Peer Member for the State of Maryland Board of Physicians.
Our Mission
We strive to be the best choice in exceptional healthcare services to all our patients in the Washington, DC., Maryland, and Virgina.

For life-threatening emergencies, call “911” or proceed to the nearest emergency department.