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

Dr. Dexter James De Guzman Asuncion, MD

Individual provider Internal Medicine Physician · NPI 1326256975

Dr. Dexter James De Guzman Asuncion, MD is an Internal Medicine Physician in Vancouver, Washington. Licensed in Washington. Registered with an NPI since 2007.

Licensed in
WA
In the registry since
2007
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

1601 E Fourth Plain Blvd
Vancouver, WA 98661-3713
Phone: (360) 905-1749
Fax: (360) 690-0343
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence MD60070549 (WA)

Record details

NPI number1326256975
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 18, 2007
Last updated in NPPESMarch 3, 2026
Certification dateMarch 3, 2026

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