Maryland Oncology Hematology remains open while making accommodations for the health and safety of our patients. If you believe you have been exposed to COVID-19 or have symptoms of COVID-19 including fever, cough, sore throat or shortness of breath, please call our office before you arrive. Any patient that has traveled out of state, please call before your appointment for travel information and review our travel policy. Our Mt. Airy location is now open and Wheaton patients now call Rockville & Germantown. View more information.


Nicholas A. DeMonaco, M.D.

Nicholas DeMonaco, M.D., F.A.C.P.


Medical Oncology


8116 Good Luck Rd #100 Lanham, MD 20706
Phone: 301-812-3900
Fax: 301-782-4132
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8926 Woodyard Rd #101 Clinton, MD 20735
Phone: 301-812-3900
Fax: 301-7824132
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7704 Matapeake Business Drive, Suite 200
Brandywine, MD 20613
Phone: 301-812-3900
Fax: 301-782-4132
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Nicholas DeMonaco, M.D., F.A.C.P.

Medical School

Temple University School of Medicine


Internal Medicine, University of Pittsburgh


Hematology & Oncology, University of Pittsburgh


Dr. DeMonaco currently serves as the Chief of the Division of Hematology-Oncology and the co-chair of the Cancer Committee at MedStar Southern Maryland Hospital Center. The Cancer Committee’s primary goal is to improve the overall care of cancer patients in the community served by the hospital, and the group also works to maintain the hospital’s accreditation with the American College of Surgeons’ Commission on Cancer. Dr. DeMonaco has previously served as a member of the hospital’s Medical Executive Committee.

One of Dr. DeMonaco’s primary interests is doctor-patient communication. During his fellowship, he participated in a dedicated program funded by the National Cancer Institute with the goal of helping oncologists-in-training improve their communication skills with patients who have a serious illness. He enjoys swimming and lives in Washington, D.C. with his wife and son.