Melvin Vierra
NPI 1134833239 · Addiction (Substance Use Disorder) Counselor · Berkeley, CA
Melvin Vierra is a Addiction (Substance Use Disorder) Counselor provider in Berkeley, CA (NPI 1134833239).
Provider details
- NPI number
- 1134833239
- 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
- 2023-01-12
- Last updated
- 2023-01-12
- Certified
- 2023-01-10
Frequently asked questions
- What is Melvin Vierra's NPI number?
- Melvin Vierra's National Provider Identifier (NPI) is 1134833239, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Melvin Vierra's specialty?
- Melvin Vierra is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Melvin Vierra located?
- Melvin Vierra's practice location on file with NPPES is 2975 Sacramento St, Berkeley, CA 94618-5444.
- What is Melvin Vierra's phone number?
- The practice phone number listed in the NPPES registry for Melvin Vierra is (510) 644-0200.
- Is Melvin Vierra's NPI active?
- Yes — Melvin Vierra's NPI (1134833239) is active in the NPPES registry as of the last update on 2023-01-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.