Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

William M Petersen, MD

Individual provider Family Medicine Physician · NPI 1225050891

William M Petersen, MD is a Family Medicine Physician in Walker, Minnesota. Licensed in Minnesota. Registered with an NPI since 2006.

Licensed in
MN
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

614 Michigan Ave
Walker, MN 56484-1390
Phone: (218) 547-3938
Fax: (218) 547-3922
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 29875 (MN)

Record details

NPI number1225050891
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 24, 2006
Last updated in NPPESNovember 18, 2011
Mailing address614 Michigan Ave, Walker, MN 56484-1390

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