Nicholas C. Mahr , MD

Cardiovascular Disease and Internal Medicine

(701) 530-7500

Heart & Lung Clinic
310 N 10th St
Bismarck, ND 58501


Dr. Nicholas Mahr is an interventional cardiologist at the St. Alexius Heart & Lung Clinic. After receiving 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. Dr. Mahr is a member of the American College of Cardiology, American Society of Nuclear Cardiology, American College of Physicians Society of Critical Care Medicine and American Society of Echocardiography.

Gender: N/A

Years in Practice: 35 Years

Languages Spoken: English

Education & Training

Medical School: St Georges University

Graduation Date: in 1986

Specialties & Hospital Affiliations

Hospital Affiliations:

  • CHI St Alexius Health

Specialties: Cardiovascular Disease and Internal Medicine

Health Insurance and Affiliations

  • Aetna Choice POS II
  • Aetna Signature Administrators PPO
  • BCBS Blue Card PPO
  • First Health PPO
  • Humana Choice POS
  • Humana ChoiceCare Network PPO
  • Multiplan PPO
  • UHC Choice Plus POS
  • UHC Medica Choice
  • UHC Navigate POS
  • UHC Options PPO

Mahr's Office Information

Fax: (701) 153-0749
Accepting New Patients: Yes
Medicare Accepted: Yes
Medicaid Accepted: Yes

Office Hours:

Mon8:00 AM-6:00 PM
Tue8:00 AM-6:00 PM
Wed8:00 AM-6:00 PM
Thu8:00 AM-6:00 PM
Fri8:00 AM-6:00 PM

Doctor Mahr's Other Office Information

Website:Not available
Accepting New Patients: No
Medicare Accepted:No
Medicaid Accepted:No

Office Hours:


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