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

Katherine De Havilland Siceloff

Individual provider Behavior Analyst · NPI 1508414863

Katherine De Havilland Siceloff is a Behavior Analyst in Seattle, Washington. Registered with an NPI since 2019.

In the registry since
2019

Practice location Address checks out

4746 11th Ave NE Ste 102
Seattle, WA 98105-4660
Phone: (206) 535-8876
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Behavior Analyst (primary) Taxonomy 103K00000X

Record details

NPI number1508414863
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedAugust 29, 2019
Last updated in NPPESAugust 29, 2019

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