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

Individual provider Psychologist · NPI 1437384419

Dr. Mark Dennis Engstrom, PHD is a Psychologist in Seattle, Washington. Practices as a sole proprietor. Registered with an NPI since 2009.

In the registry since
2009
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

1959 NE Pacific St Box 356490
Seattle, WA 98195-0001
Phone: (206) 543-6216
Fax: (206) 685-3244
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X

Record details

NPI number1437384419
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorYes
NPI enumeratedMay 20, 2009
Last updated in NPPESMay 20, 2009
Mailing address1921 44th Ave Sw, Seattle, WA 98116-1908

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