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Visiting Specialists

Nicholas Mahr, MD


Dr. Mahr received his medical degree from St. George's University in St. George, Grenada, Dr. Mahr finished a residency in internal medicine at Hackensack Medical Center, Hackensack, N.J. He completed a fellowship in critical care at Mount Sinai Medical Center, New York, N.Y., and a fellowship in cardiology at Mount Sinai Medical Center of Greater Miami, Miami Beach, Fla. In addition, he completed fellowships in noninvasive cardiology and interventional cardiology at Hartford Hospital, Hartford, Conn.

Dr. Mahr is board certified in internal medicine by the American Board of Internal Medicine and board certified in nuclear cardiology by the American Society of Nuclear Cardiology. He is board eligible in general and interventional cardiology as well as critical care medicine.

Clinic Locations

Heart & Lung Clinic
310 North 10th Street
Bismarck, North Dakota 58501
Phone: (701) 530-7500
Toll Free:(800) 932-8848

Southwest Medical Clinic
802 2nd Ave NW
Bowman, ND  58623