Tonia Washington
NPI 1669940888 · Addiction (Substance Use Disorder) Counselor · Seattle, WA
Tonia Washington is a Addiction (Substance Use Disorder) Counselor provider in Seattle, WA (NPI 1669940888).
Provider details
- NPI number
- 1669940888
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
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
7 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
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
Registry dates
- Enumerated
- 2018-11-06
- Last updated
- 2018-11-06
Frequently asked questions
- What is Tonia Washington's NPI number?
- Tonia Washington's National Provider Identifier (NPI) is 1669940888, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tonia Washington's specialty?
- Tonia Washington is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Tonia Washington located?
- Tonia Washington's practice location on file with NPPES is 8444 Rainier Ave S, Seattle, WA 98118-4655.
- What is Tonia Washington's phone number?
- The practice phone number listed in the NPPES registry for Tonia Washington is (253) 833-7444.
- Is Tonia Washington's NPI active?
- Yes — Tonia Washington's NPI (1669940888) is active in the NPPES registry as of the last update on 2018-11-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.