Christopher Johnston
NPI 1104512565 · Addiction (Substance Use Disorder) Counselor · South Gate, CA
Christopher Johnston is a Addiction (Substance Use Disorder) Counselor provider in South Gate, CA (NPI 1104512565).
Provider details
- NPI number
- 1104512565
- 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
3 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
- 2023-04-17
- Last updated
- 2023-04-17
- Certified
- 2023-04-17
Frequently asked questions
- What is Christopher Johnston's NPI number?
- Christopher Johnston's National Provider Identifier (NPI) is 1104512565, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christopher Johnston's specialty?
- Christopher Johnston is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Christopher Johnston located?
- Christopher Johnston's practice location on file with NPPES is 8921 California Ave, South Gate, CA 90280-3013.
- What is Christopher Johnston's phone number?
- The practice phone number listed in the NPPES registry for Christopher Johnston is (323) 487-5002.
- Is Christopher Johnston's NPI active?
- Yes — Christopher Johnston's NPI (1104512565) is active in the NPPES registry as of the last update on 2023-04-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.