Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Sionainn Marissa Stein, LMHC, CST, NCC

Individual provider Mental Health Counselor · NPI 1275297228

Sionainn Marissa Stein, LMHC, CST, NCC is a Mental Health Counselor in Seattle, Washington. Practices as a sole proprietor and works from 2 locations. Licensed in Washington.

Licensed in
WA
In the registry since
2021
What do these letters mean?
LMHC — Licensed Mental Health Counselor
A licensed mental health counsellor; the title used in Florida, New York and Washington among others.
NCC — National Certified Counselor
A counsellor certified by the NBCC.

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Practice location Address checks out

600 N 36th St Ste 221
Seattle, WA 98103-8697
Phone: (425) 477-9118
Fax: (206) 338-0626
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 111 Nw 140th St, Seattle, WA 98177-3910 — (425) 477-9118

Specialties & licences

Mental Health Counselor (primary) Taxonomy 101YM0800X · Licence LH61466439 (WA)

Record details

NPI number1275297228
Entity typeIndividual (Type 1)
GenderFemale
Credentials LMHC , CST , NCC
Sole proprietorYes
NPI enumeratedOctober 26, 2021
Last updated in NPPESNovember 17, 2025
Certification dateNovember 17, 2025

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