Ruby Johnstone
NPI 1326688979 · Addiction (Substance Use Disorder) Counselor · Ventura, CA
Ruby Johnstone is a Addiction (Substance Use Disorder) Counselor provider in Ventura, CA (NPI 1326688979).
Provider details
- NPI number
- 1326688979
- 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
6 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
- 2020-01-12
- Last updated
- 2020-01-12
- Certified
- 2020-01-12
Frequently asked questions
- What is Ruby Johnstone's NPI number?
- Ruby Johnstone's National Provider Identifier (NPI) is 1326688979, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ruby Johnstone's specialty?
- Ruby Johnstone is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Ruby Johnstone located?
- Ruby Johnstone's practice location on file with NPPES is 334 W Harrison Ave, Ventura, CA 93001-1826.
- What is Ruby Johnstone's phone number?
- The practice phone number listed in the NPPES registry for Ruby Johnstone is (805) 256-4993.
- Is Ruby Johnstone's NPI active?
- Yes — Ruby Johnstone's NPI (1326688979) is active in the NPPES registry as of the last update on 2020-01-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.