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

Dr. Matthew Ralph De Haan, PSYD

Individual provider Clinical Psychologist · NPI 1578870648

Dr. Matthew Ralph De Haan, PSYD is a Clinical Psychologist in Mill Creek, Washington. Licensed in Washington. Registered with an NPI since 2010.

Licensed in
WA
In the registry since
2010
What do these letters mean?
PSYD — Doctor of Psychology
A doctoral psychologist trained primarily for clinical practice.

See every abbreviation used in this directory →

Practice location Address checks out

16000 Bothell Everett Hwy Ste 340
Mill Creek, WA 98012-1742
Phone: (425) 780-7184
Show map & directions

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

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 60337257 (WA)

Record details

NPI number1578870648
Entity typeIndividual (Type 1)
GenderMale
Credentials PSYD
Sole proprietorNo
NPI enumeratedSeptember 9, 2010
Last updated in NPPESJune 2, 2015

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