2022 Congratulations on Your Achievements! Tri-County Health Care is here for you every step of the way and is dedicated to being your trusted partner for life. OTri-County Health Care is becoming Astera Health Call 218-631-3510 to schedule an appointment or visit tchc.org for more information. 2022 Congratulations on Your Achievements! Tri-County Health Care is here for you every step of the way and is dedicated to being your trusted partner for life. OTri-County Health Care is becoming Astera Health Call 218-631-3510 to schedule an appointment or visit tchc.org for more information.