Steven Mason, PSY.D. PSYCHOLOGIST
NPI 1811472921 · Psychologist · Hermosa Beach, CA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Steven Mason, PSY.D. PSYCHOLOGIST is a Psychologist provider in Hermosa Beach, CA (NPI 1811472921).
Provider details
- NPI number
- 1811472921
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PSY.D. PSYCHOLOGIST
- Sex
- Male
- Sole proprietor
- No
- License
- PSY35093 (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
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
Mailing address
Registry dates
- Enumerated
- 2018-09-25
- Last updated
- 2024-06-26
- Certified
- 2024-06-26
Frequently asked questions
- What is Steven Mason's NPI number?
- Steven Mason's National Provider Identifier (NPI) is 1811472921, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Steven Mason's specialty?
- Steven Mason is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is Steven Mason located?
- Steven Mason's practice location on file with NPPES is 2447 Pacific Coast Hwy # 213, Hermosa Beach, CA 90254-2714.
- What is Steven Mason's phone number?
- The practice phone number listed in the NPPES registry for Steven Mason is (424) 235-5315.
- Does Steven Mason accept Medicare?
- Steven Mason is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Steven Mason's NPI active?
- Yes — Steven Mason's NPI (1811472921) is active in the NPPES registry as of the last update on 2024-06-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.