Sionainn Stein, LMHC, CST, NCC
NPI 1275297228 · Mental Health Counselor · Seattle, WA
Sionainn Stein, LMHC, CST, NCC is a Mental Health Counselor provider in Seattle, WA (NPI 1275297228).
Provider details
- NPI number
- 1275297228
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- LMHC, CST, NCC
- Sex
- Female
- Sole proprietor
- Yes
- License
- LH61466439 (WA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (1)
- 111 Nw 140th StSeattle, WA 98177-3910Phone: (425) 477-9118
Registry dates
- Enumerated
- 2021-10-26
- Last updated
- 2025-11-17
- Certified
- 2025-11-17
Frequently asked questions
- What is Sionainn Stein's NPI number?
- Sionainn Stein's National Provider Identifier (NPI) is 1275297228, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sionainn Stein's specialty?
- Sionainn Stein is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Sionainn Stein located?
- Sionainn Stein's practice location on file with NPPES is 600 N 36th St Ste 221, Seattle, WA 98103-8697.
- What is Sionainn Stein's phone number?
- The practice phone number listed in the NPPES registry for Sionainn Stein is (425) 477-9118.
- Is Sionainn Stein's NPI active?
- Yes — Sionainn Stein's NPI (1275297228) is active in the NPPES registry as of the last update on 2025-11-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.