Dr. Sean Halligan - Cardiac, Cardiovascular Disease Care and Interventional Cardiology specialist in Sioux Falls, SD
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Sean C. Halligan

Sean C. Halligan, MD, FACC, FSCAI

Cardiology, Cardiovascular Disease, and Interventional Cardiology
4.7 / 5 (Based on 160 Ratings) Read Reviews | 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


June 16, 2021
I found everyone from front desk to check very kind.
June 07, 2021
My experience was as good as could be expected considering Sanford failed to send over important tests.
May 27, 2021
I really think that he was just about the best doctor I have ever seen. I really, really liked it.
May 25, 2021
I just felt that everybody was very well organized. The experience did not take a long time. I didn't have to wait long at all and everybody was very friendly and helpful and informative.
May 13, 2021
I was seen promptly and the physician was very knowledgeable and clear about his communication.
April 20, 2021
All staff members were incredibly polite, got their jobs done efficiently and quickly, there was a very small wait time. I was done and out of the building before my actual appointment time. very well organized
April 19, 2021
Everyone was kind and courteous from the people when I checked in and the people that took my insurance. And the people that scheduled my appointments and provided services for me. They listen to me, they were professional, they were nice, and they kept everything clean. And they barely kept me waiting. So I enjoyed my visit.
April 16, 2021
Well, I was not feeling too good in there because of my ears and symptoms. So, I don't think I quite actually listen very good from my own perspective, but he just got a job if he could do I think with me that day and I think it very much. Thank you, Dr. Halligan. Bye.
April 15, 2021
I was very impressed with the... speed and the quickness of everything tests... admission... seeing the doctor... The nurse for the doctor that day was wonderful. Thank you.
April 13, 2021
I think you did a real good job. He was real patient with me and everything else. I like them really well.
March 08, 2021
Very patient.
March 05, 2021
Okay, when I... my appointment was fine and it was great. But when I checked into the facility to the Heart Hospital itself- the gal that helped me, she registered me under a wrong name. I gave her my name and she went through the file, yes, here it is. And I waited through probably 10 people being called an interviewed doing her paperwork. And I went and asked if I was registered right and I was not. And I sat probably 25 minutes- Just waiting. Yes, very dissatisfied with the check in.
March 05, 2021
This is my 1st visit. I was impressed by Dr. Halligan nurses the tech that did my EKG and Dr. Halligan and I was especially impressed by him. He's very thorough did a lot of teaching showed lot of care. I will definitely recommend him to anyone that needs a Cardiologist. Thank you very much.
February 08, 2021
I don't think the doctor had enough time to study my chart or problems
January 29, 2021
Very prompt, efficient and pleasant...everyone we had contact with. Thank you.
January 08, 2021
We were very satisfied with everything he did. Thank you.
December 07, 2020
Hi, Dr. Halligan was very very thorough. He was very kind and respected my questions when I asked them.
November 24, 2020
This is the most well organized group of folks. The day went like clock work. And being told what the next step would be and what to expect. I was so impressed more so than I was back 7 years ago. Keep up the good work.
November 24, 2020
I think Dr. Halligan is fine. The only recommendation I would have is it would have been good if he had called me with the results. In the event I had questions I didn't I mean everything was fine. The nurse did a good job, but I think it is helpful to be able to speak directly to your doctor. Once you've had a test like that. Thanks.
November 19, 2020
Both my husband and I are very pleased with the Heart Hospital. Dr. Weiss has been a godsend for my husband, and the cardiologist team that I'm seeing, I couldn't be more confident that things are going to go extremely well. Thank you.

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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