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

Dr. Duane Claassen, MD

Individual provider Family Medicine Physician · NPI 1497759880

Dr. Duane Claassen, MD is a Family Medicine Physician in Golden, Colorado. Licensed in Colorado. Registered with an NPI since 2005.

Licensed in
CO
In the registry since
2005
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

1707 Cole Blvd Ste 150
Golden, CO 80401
Phone: (303) 233-8295
Fax: (303) 233-8443
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 25366 (CO)

Record details

NPI number1497759880
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 13, 2005
Last updated in NPPESJuly 20, 2010
Mailing address1707 Cole Blvd, Ste 250, Golden, CO 80401

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