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

Dr. Mark David Tilson, PHD

Individual provider Clinical Neuropsychologist · NPI 1134345523

Dr. Mark David Tilson, PHD is a Clinical Neuropsychologist in Portland, Oregon. Practices as a sole proprietor. Licensed in Oregon.

Licensed in
OR
In the registry since
2007
Specialties on file
3
What do these letters mean?
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

1015 NW 22nd Ave Rio - 5 E
Portland, OR 97210-3025
Phone: (503) 413-7662
Fax: (503) 413-8103
Show map & directions

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

Specialties & licences

Rehabilitation Psychologist (primary) Taxonomy 103TR0400X · Licence 826 (OR)
Clinical Neuropsychologist Taxonomy 103G00000X · Licence 826 (OR)
Clinical Psychologist Taxonomy 103TC0700X · Licence 826 (OR)

Record details

NPI number1134345523
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedApril 17, 2007
Last updated in NPPESSeptember 11, 2025

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