Greg Washington
NPI 1427224229 · Addiction (Substance Use Disorder) Counselor · Carson, CA
Greg Washington is a Addiction (Substance Use Disorder) Counselor provider in Carson, CA (NPI 1427224229).
Provider details
- NPI number
- 1427224229
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- Yes
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
18 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
- 2008-05-01
- Last updated
- 2008-05-01
Frequently asked questions
- What is Greg Washington's NPI number?
- Greg Washington's National Provider Identifier (NPI) is 1427224229, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Greg Washington's specialty?
- Greg Washington is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Greg Washington located?
- Greg Washington's practice location on file with NPPES is 17420 Avalon Blvd, Carson, CA 90746-1564.
- What is Greg Washington's phone number?
- The practice phone number listed in the NPPES registry for Greg Washington is (323) 759-3464.
- Is Greg Washington's NPI active?
- Yes — Greg Washington's NPI (1427224229) is active in the NPPES registry as of the last update on 2008-05-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.