Sidney Stephens, SUDRC
NPI 1255129243 · Addiction (Substance Use Disorder) Counselor · Castro Valley, CA
Sidney Stephens, SUDRC is a Addiction (Substance Use Disorder) Counselor provider in Castro Valley, CA (NPI 1255129243).
Provider details
- NPI number
- 1255129243
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Credential
- SUDRC
- Sex
- Male
- Sole proprietor
- Yes
- License
- 21270 (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
1 yr in NPPES 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
- 2025-04-29
- Last updated
- 2025-04-29
- Certified
- 2025-04-29
Frequently asked questions
- What is Sidney Stephens's NPI number?
- Sidney Stephens's National Provider Identifier (NPI) is 1255129243, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sidney Stephens's specialty?
- Sidney Stephens is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Sidney Stephens located?
- Sidney Stephens's practice location on file with NPPES is 2035 Fairmont Dr, Castro Valley, CA 94578-1088.
- What is Sidney Stephens's phone number?
- The practice phone number listed in the NPPES registry for Sidney Stephens is (510) 346-7836.
- Is Sidney Stephens's NPI active?
- Yes — Sidney Stephens's NPI (1255129243) is active in the NPPES registry as of the last update on 2025-04-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.