IndividualActive
Semi Chang
NPI 1851856538 · Behavior Analyst · Oakland, CA
Semi Chang is a Behavior Analyst provider in Oakland, CA (NPI 1851856538).
Provider details
- NPI number
- 1851856538
- Entity type
- Individual
- Primary specialty
- Behavior AnalystBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- Yes
- License
- 1-23-70046 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(66/100 index)
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
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
155 Grand Ave Ste 500
Oakland, CA 94612-3747
Phone: (866) 523-4268
Street-level locationGet directions
Mailing address
Dept La 22763
Pasadena, CA 91185-0001
Registry dates
- Enumerated
- 2019-02-06
- Last updated
- 2024-01-12
- Certified
- 2024-01-12
Frequently asked questions
- What is Semi Chang's NPI number?
- Semi Chang's National Provider Identifier (NPI) is 1851856538, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Semi Chang's specialty?
- Semi Chang is listed in the NPPES registry with a primary specialty of Behavior Analyst (Behavioral Health & Social Service Providers).
- Where is Semi Chang located?
- Semi Chang's practice location on file with NPPES is 155 Grand Ave Ste 500, Oakland, CA 94612-3747.
- What is Semi Chang's phone number?
- The practice phone number listed in the NPPES registry for Semi Chang is (866) 523-4268.
- Is Semi Chang's NPI active?
- Yes — Semi Chang's NPI (1851856538) is active in the NPPES registry as of the last update on 2024-01-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.