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 / MN

NICHOLAS C ELLEFSON, DO

HOSPITALIST

Medical school: WEST VIRGINIA SCHOOL OF OSTEOPATHIC MEDICINE

Graduated: 2012

Also: FAMILY PRACTICE

NPI: 1639699200

Practice Locations (2)

THE DULUTH CLINIC LTD

400 E 3RD ST

DULUTH, MN 558051951

2187868364

ST MARYS HOSPITAL OF SUPERIOR

3500 TOWER AVE

SUPERIOR, WI 548804491

7153928281

Source: CMS National Downloadable File, September 2026.

NICHOLAS ELLEFSON, DO | HealthCareAtlasUSA