Sand Chang, PHD
NPI 1578712105 · Clinical Psychologist · San Francisco, CA
Sand Chang, PHD is a Clinical Psychologist provider in San Francisco, CA (NPI 1578712105).
Provider details
- NPI number
- 1578712105
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Female
- Sole proprietor
- Yes
- License
- PSY22098 (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
17 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
Mailing address
Registry dates
- Enumerated
- 2008-09-18
- Last updated
- 2019-10-24
Frequently asked questions
- What is Sand Chang's NPI number?
- Sand Chang's National Provider Identifier (NPI) is 1578712105, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sand Chang's specialty?
- Sand Chang is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Sand Chang located?
- Sand Chang's practice location on file with NPPES is 625 Market St Fl 15, San Francisco, CA 94105.
- What is Sand Chang's phone number?
- The practice phone number listed in the NPPES registry for Sand Chang is (415) 360-3833.
- Is Sand Chang's NPI active?
- Yes — Sand Chang's NPI (1578712105) is active in the NPPES registry as of the last update on 2019-10-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.