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

John C. Knudsen, MD

Individual provider Specialist · NPI 1083688790

John C. Knudsen, MD is a Specialist in Mount Vernon, Washington. Licensed in Washington. Registered with an NPI since 2006.

Licensed in
WA
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

111 N 17th St
Mount Vernon, WA 98273-3440
Phone: (360) 424-4627
Fax: (360) 848-6327
Show map & directions

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

Specialties & licences

Specialist (primary) Taxonomy 174400000X · Licence MD0016795 (WA)

Record details

NPI number1083688790
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 17, 2006
Last updated in NPPESJuly 13, 2026
Mailing address111 N 17th St, Mount Vernon, WA 98273-3440

Other providers in Mount Vernon