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

Allyson Ylvisaker

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1609601905

Allyson Ylvisaker is an Addiction (Substance Use Disorder) Counselor in Seattle, Washington. Licensed in Washington. Registered with an NPI since 2024.

Licensed in
WA
In the registry since
2024
Specialties on file
2

Practice location Address checks out

1600 E Olive St
Seattle, WA 98122-2735
Phone: (206) 901-2000
Show map & directions

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

Specialties & licences

Mental Health Counselor (primary) Taxonomy 101YM0800X · Licence MC70043326 (WA)
Addiction (Substance Use Disorder) Counselor Taxonomy 101YA0400X · Licence CO70106443 (WA)

Record details

NPI number1609601905
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedSeptember 5, 2024
Last updated in NPPESMarch 13, 2026
Certification dateMarch 13, 2026

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