Webgundersen health system has locations in 19 counties throughout western wisconsin, northeastern iowa and southeastern minnesota. The network's sprawling flagship. Webgundersen health system is a medical group practice located in la crosse, wi that specializes in physician assistant (pa) and nursing (nurse practitioner). Webfind a doctor and information about providers at gundersen health system. Search by condition, symptom, specialty or physician name. Webthe story of gundersen health system’s la crosse, wis. , campus renewal begins with the retreating glaciers that formed the coulee region 500,000 years ago. Webgundersen health system’s focus on exceptional patient care and experience is once again placing it in elite company. Healthgrades has honored gundersen’s la crosse.