Diana Siew Marriage and Family Therapy Inc
NPI 1154078459 · Marriage & Family Therapist · Los Angeles, CA
Diana Siew Marriage and Family Therapy Inc is a Marriage & Family Therapist organization in Los Angeles, CA (NPI 1154078459).
Provider details
- NPI number
- 1154078459
- Entity type
- Organization
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Organization subpart
- No
- Authorized official
- Diana Siew, President(424) 442-0266
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
4 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
- 2022-03-07
- Last updated
- 2022-04-04
- Certified
- 2022-04-04
Frequently asked questions
- What is Diana Siew Marriage and Family Therapy Inc's NPI number?
- Diana Siew Marriage and Family Therapy Inc's National Provider Identifier (NPI) is 1154078459, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Diana Siew Marriage and Family Therapy Inc?
- Diana Siew Marriage and Family Therapy Inc is classified in the NPPES registry as Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Diana Siew Marriage and Family Therapy Inc located?
- Diana Siew Marriage and Family Therapy Inc's practice location on file with NPPES is 1849 Sawtelle Blvd Ste 610, Los Angeles, CA 90025-7013.
- What is Diana Siew Marriage and Family Therapy Inc's phone number?
- The practice phone number listed in the NPPES registry for Diana Siew Marriage and Family Therapy Inc is (424) 442-0266.
- Who is the authorized official for Diana Siew Marriage and Family Therapy Inc?
- The authorized official listed on Diana Siew Marriage and Family Therapy Inc's NPPES record is Diana Siew, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Diana Siew Marriage and Family Therapy Inc's NPI active?
- Yes — Diana Siew Marriage and Family Therapy Inc's NPI (1154078459) is active in the NPPES registry as of the last update on 2022-04-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.