Our Team / Our Commitment

As part of Gundersen Health System, Tri-State Ambulance utilizes a team environment where all members work toward the shared goal of providing the highest level of patient care to the largest number of people in the least amount of time. With over one hundred experienced paramedics and EMTs, Tri-State Ambulance and Tri-State Regional Ambulance continuously set the standard for area emergency medical services.


Administrative Director – Tom Tornstrom
Phone: 608-784-8827 | Email: tetornst [.at.] gundersenhealth.org

Financial Operations Manager – Shelly Boldt
Phone: 608-519-3346 | Email: mlboldt [.at.] gundersenhealth.org

Service Director – Darin Wendel
Phone: 608-784-8827 x73272 | Email: darin.wendel[.at.]gundersenhealth.org

Program Manager – Evan Weis
Phone: 608-784-8827 x73271 | Email: evan.weis [.at.] gundersenhealth.org

Regional Operations Manager – Walt Zehr
Phone: 608-519-3345 | Email: wczehr [.at.] gundersenhealth.org

Operations Supervisor – Clinical Services – Loren Mitchell
Ph. 608-784-8827 x73256 | Email: LJMitche [.at.] gundersenhealth.org

Operations Supervisor – Logistics and Safety – Callie Revels
Phone: 608-784-8827 x73270 | Email: cmrevels [.at.] gundersenhealth.org

Operations Supervisor – Recruiting and Retention – Jaime Naber
Phone: 608-784-8827 | Email: JLNaber1 [.at.] gundersenhealth.org

** Replace [.at.] with @ to send an email. **

Medical Direction

Christopher Eberlein, MD, Board Certified Emergency Medicine and Emergency Medical Services

Support Staff

Administrative Coordinator – Sandi Weber
Phone: 608-784-1568 | Email: scweber [.at.] gundersenhealth.org

Senior Office Assistant – Kristi Ceason
Phone: 608-784-8827 | Email: kmceason [.at.] gundersenhealth.org

Board of Directors

Tri-State Ambulance, Inc. is governed by a dedicated board of directors made up community, health care, and business leaders. Our Board of Directors provides the strategic direction for Tri-State Ambulance.

  • President: Mike McKee, Mike McKee, Vice President, Team 2, Gundersen Health System
  • Vice President: Mike Poellinger, Owner, Poellinger Construction; Mayor, City of La Crescent, MN
  • Secretary/Treasurer: Bryan Erdmann, Vice President, Clinical Operations and Regional System, Gundersen Health System
  • Community Member: Kyle Bakkum, Chief Executive Officer, Vernon Memorial Healthcare, Vernon County
  • Community Member: Mike Kittleson, Retired Hospital Administrator, Trempealeau County