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Sean C. Halligan

Sean C. Halligan, MD, FACC, FSCAI

Cardiology, Cardiovascular Disease, and Interventional Cardiology
4.7 / 5 (Based on 379 Ratings) Learn More

Office Information



University of Nebraska College of Medicine, Omaha, Medical School


Mayo Clinic, Rochester, MN, Internal Medicine


Mayo Clinic, Rochester, MN, Cardiology

Professional Memberships

Fellow, American College of Cardiology; Fellow, Society for Cardiac Angiography and Interventions


American Board of Internal Medicine; Board of Cardiovascular Computed Tomography; Subspecialty in Cardiovascular Disease; Subspecialty in Interventional Cardiology


October 01, 2018
Good doctor
September 28, 2018
Very professional and friendly staff.
September 18, 2018
Thank You Dr Halligan
September 17, 2018
He is ok
August 27, 2018
The staff were friendly, the Dr was informative.
August 23, 2018
Very professional
August 23, 2018
Excellant experience from the help desk to the techs, nurses and doctor. Would definitely recommend.
August 02, 2018
I had a positive experience
August 01, 2018
From word of mouth and my experience they are the best in the area.
July 31, 2018
I don't want to share my disappointment with others. This may have been an exception. I am sure Dr. Halligan is a fine doctor and is invaluable in treating heart patients.
June 28, 2018
A definite recommendation.
May 03, 2018
I liked Dr Halligan immediately. He had a warm, outgoing personality, a firm handshake, and seemed to know his business. If he’s going to mess with my heart, I hope he knows what he’s doing.
April 24, 2018
Great sevice
April 23, 2018
Highly recommended
April 20, 2018
After my visit with Dr Halligan I felt assured and confident. I am better prepared to undergo the procedure to repair my CTO.
March 22, 2018
That my provider was professional and the process was not difficult.
February 22, 2018
Don't see this doctor.

This directory contains information about the provider members of Independent Health Care Associates, Avera Health and all Avera entities, members of the Avera Medical Group, and employed select providers with Avera McKennan, Sioux Falls, SD and Avera Marshall, Marshall, MN and physicians with hospital privileges at Avera St. Luke's, Aberdeen, SD; Avera Sacred Heart, Yankton, SD; Avera Queen of Peace, Mitchell, SD; Avera St. Mary's, Pierre, SD.

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