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

Dr. Calvin Cardin Loken, MD

Individual provider Specialist · NPI 1912932922

Dr. Calvin Cardin Loken, MD is a Specialist in Duluth, Minnesota. Practices as a sole proprietor. Licensed in Minnesota.

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

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Practice location Address checks out

925 E Superior St
Duluth, MN 55802-2238
Phone: (218) 722-3700
Fax: (218) 722-8705
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Specialist (primary) Taxonomy 174400000X · Licence 23268 (MN)

Record details

NPI number1912932922
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 11, 2006
Last updated in NPPESJuly 8, 2007

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