Stephen Sideroff, PH.D.
NPI 1306119466 · Clinical Psychologist · Santa Monica, CA
Stephen Sideroff, PH.D. is a Clinical Psychologist provider in Santa Monica, CA (NPI 1306119466).
Provider details
- NPI number
- 1306119466
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- PSY5777 (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
14 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
- 2012-02-20
- Last updated
- 2012-02-20
Frequently asked questions
- What is Stephen Sideroff's NPI number?
- Stephen Sideroff's National Provider Identifier (NPI) is 1306119466, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Sideroff's specialty?
- Stephen Sideroff is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Stephen Sideroff located?
- Stephen Sideroff's practice location on file with NPPES is 1245 16th St Ste 210, Santa Monica, CA 90404-1240.
- What is Stephen Sideroff's phone number?
- The practice phone number listed in the NPPES registry for Stephen Sideroff is (310) 828-1113.
- Is Stephen Sideroff's NPI active?
- Yes — Stephen Sideroff's NPI (1306119466) is active in the NPPES registry as of the last update on 2012-02-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.