Mark Johnson, MSW CANDIDATE
NPI 1497230346 · Mental Health Counselor · Oakland, CA
Mark Johnson, MSW CANDIDATE is a Mental Health Counselor provider in Oakland, CA (NPI 1497230346).
Provider details
- NPI number
- 1497230346
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- MSW CANDIDATE
- 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
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
- 2018-09-26
- Last updated
- 2018-09-26
Frequently asked questions
- What is Mark Johnson's NPI number?
- Mark Johnson's National Provider Identifier (NPI) is 1497230346, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Johnson's specialty?
- Mark Johnson is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Mark Johnson located?
- Mark Johnson's practice location on file with NPPES is 280 17th St, Oakland, CA 94612-4124.
- What is Mark Johnson's phone number?
- The practice phone number listed in the NPPES registry for Mark Johnson is (510) 238-5020.
- Is Mark Johnson's NPI active?
- Yes — Mark Johnson's NPI (1497230346) is active in the NPPES registry as of the last update on 2018-09-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.