HealthCareAtlasUSA

This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.

Doctors / IA

CATHERINE A NELSON, DO

FAMILY PRACTICE

Graduated: 2014

Offers telehealth

NPI: 1881004042

Practice Locations (2)

GUNDERSEN CLINIC LTD

1830 STATE HWY 9

DECORAH, IA 521017301

5633823140

GUNDERSEN REGIONAL CLINICS, LLC

1830 STATE HWY 9, SUITE 100

DECORAH, IA 521017301

5633823140

Source: CMS National Downloadable File, September 2026.

CATHERINE NELSON, DO | HealthCareAtlasUSA