Harold Jefferson
NPI 1649552936 · Day Training/Habilitation Specialist · Oakland, CA
Harold Jefferson is a Day Training/Habilitation Specialist provider in Oakland, CA (NPI 1649552936).
Provider details
- NPI number
- 1649552936
- Entity type
- Individual
- Primary specialty
- Day Training/Habilitation SpecialistNursing Service Related Providers
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Nursing Service Related Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 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
- 2011-09-13
- Last updated
- 2025-06-06
- Certified
- 2025-06-06
Frequently asked questions
- What is Harold Jefferson's NPI number?
- Harold Jefferson's National Provider Identifier (NPI) is 1649552936, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Harold Jefferson's specialty?
- Harold Jefferson is listed in the NPPES registry with a primary specialty of Day Training/Habilitation Specialist (Nursing Service Related Providers).
- Where is Harold Jefferson located?
- Harold Jefferson's practice location on file with NPPES is 2540 Charleston St, Oakland, CA 94602-2508.
- What is Harold Jefferson's phone number?
- The practice phone number listed in the NPPES registry for Harold Jefferson is (510) 531-3666.
- Is Harold Jefferson's NPI active?
- Yes — Harold Jefferson's NPI (1649552936) is active in the NPPES registry as of the last update on 2025-06-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.