Hi @marib, I also add my welcome to Mayo Clinic Connect and am so glad you decided to join and become part of the discussions. Below I have included a link for Mayo's cardiac electrophysiologists (EP) Study site as well as a helpful website that gives you multiple options for traveling from Duluth to Mayo Clinic in Rochester. Because it is a destination medical center, a lot of transportation companies make it fairly easy to travel from different parts of the state.

EP Study site - https://www.mayoclinic.org/tests-procedures/ep-study/doctors-departments/pdc-20385000
Travel options from Duluth - https://www.rome2rio.com/s/Duluth/Mayo-Clinic

Mayo has 9 different physicians that specialize in EP studies. On the site you can click on each physician to see their credentials. I am very interested in knowing what the electrophysiologist that you contacted comes back with. Will you let us know when they respond?