Joseph Mayner, R1555880424
NPI 1871451427 · Addiction (Substance Use Disorder) Counselor · Barstow, CA
Joseph Mayner, R1555880424 is a Addiction (Substance Use Disorder) Counselor provider in Barstow, CA (NPI 1871451427).
Provider details
- NPI number
- 1871451427
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Credential
- R1555880424
- Sex
- Male
- Sole proprietor
- No
- License
- R1555880424 (CA)
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
Under 1 yr in registry
- Profile completeness38% of score
100% 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
- 2026-01-13
- Last updated
- 2026-01-13
- Certified
- 2026-01-13
Frequently asked questions
- What is Joseph Mayner's NPI number?
- Joseph Mayner's National Provider Identifier (NPI) is 1871451427, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joseph Mayner's specialty?
- Joseph Mayner is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Joseph Mayner located?
- Joseph Mayner's practice location on file with NPPES is 225 Barstow Rd, Barstow, CA 92311-2903.
- What is Joseph Mayner's phone number?
- The practice phone number listed in the NPPES registry for Joseph Mayner is (760) 255-1381.
- Is Joseph Mayner's NPI active?
- Yes — Joseph Mayner's NPI (1871451427) is active in the NPPES registry as of the last update on 2026-01-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.