Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1326256975 Individual Practitioner Male Practitioner

Dr. Dexter James De Guzman Asuncion , MD

Internal Medicine • Vancouver, WA

Professional Overview & Biography Verified Profile Summary

Dr. Dexter James Asuncion, MD is a registered healthcare professional specializing in Internal Medicine in Vancouver, WA. Practice services are available at 1601 E FOURTH PLAIN BLVD under active NPI credentials.

Practice Location & Contact Primary Location

Practice Address

1601 E Fourth Plain Blvd

Vancouver, WA 986613713

Telephone 3609051749
Fax 3606900343
Associated Practice Facility / Clinic
🏢 Portland Vamc Facility NPI 1487698601

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Vancouver, WA

Active Practitioner
Practitioner Clinical Experience
Active
City Avg: 19.9 Yrs
State Avg: 23.4 Yrs
Regional Practice Density
203 Specialists

Practicing in Vancouver, WA (3169 Statewide)

Telehealth Adoption Rate
19.7% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
67.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Medical Specialties & State Licenses

CMS Verified: 2026-03-03
Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License WA MD60070549

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

10 Associated Practitioners
Angela Atkinson , APRN

Nurse Practitioner

NPI 1083249189

Advanced Practice Registered Nurse

Jennifer Mckenzie , MSW, LCSW

Social Worker - Clinical

NPI 1295845196

Master of Social Work, Licensed Clinical Social Worker

Karen Kaul , LCSW

Social Worker - Clinical

NPI 1306305255

Licensed Clinical Social Worker

Kathryn Scott , MSW, LICSW

Social Worker - Clinical

NPI 1306305289

Master of Social Work, Licensed Independent Clinical Social Worker

Kimberley Wengrove , NP

Nurse Practitioner - Family

NPI 1447283064

Nurse Practitioner

NPI 1548720147

Licensed Clinical Social Worker

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

8 Historical Events
📍
Updated Practice Location March 03, 2026

Registered at 1601 E FOURTH PLAIN BLVD, VANCOUVER, WA 986613713 (Tel: 3609051749)

📍
Updated Business Mailing Address March 03, 2026

Registered at 1601 E FOURTH PLAIN BLVD, VANCOUVER, WA 986613713 (Tel: 3609051749)

NPI Profile Active January 10, 2013

NPI status registered as active in NPPES database

📍
Updated Practice Location January 10, 2013

Registered at 1615 DELAWARE ST, LONGVIEW, WA 986322367 (Tel: 3605013601)

📍
Updated Business Mailing Address January 10, 2013

Registered at PO BOX 3002, LONGVIEW, WA 986320302 (Tel: 3604142137)

👤
Provider Name / Credentials Updated January 10, 2013

Recorded as DEXTER JAMES ASUNCION, M.D.

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) January 10, 2013

Internal Medicine (License #MD60070549 in WA)

🟢
Initial NPI Registration & Enumeration May 18, 2007

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1326256975
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: May 18, 2007
Last Update: March 03, 2026
Sole Proprietor: No

Mailing Address

1601 E Fourth Plain Blvd

Vancouver, WA 986613713

Phone: 3609051749

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.