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

Dr. Dirk Jacob Van Leeuwen, MD, PHD, FAASLD

Individual provider Gastroenterology Physician · NPI 1205941309

Dr. Dirk Jacob Van Leeuwen, MD, PHD, FAASLD is a Gastroenterology Physician in Portland, Oregon. Works from 2 locations. Licensed in Kentucky and Oregon.

Licensed in
KY, OR
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Practice location Address checks out

10000 SE Main St Ste 112
Portland, OR 97216-2441
Phone: (503) 255-3054
Fax: (503) 255-7651
Show map & directions

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

Additional practice locations (1)

  • 1301 Pleasant Valley Rd Ste 401, Owensboro, KY 42303-9774 — (270) 417-7800

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence CP206793 (OR)
Gastroenterology Physician Taxonomy 207RG0100X · Licence EMERGENT (KY)

Record details

NPI number1205941309
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , PHD , FAASLD
Sole proprietorNo
NPI enumeratedAugust 20, 2006
Last updated in NPPESFebruary 22, 2023
Certification dateFebruary 22, 2023

Other providers in Portland