Maria S. Flax, PH.D., Licensed Psychologist, Inc.
NPI 1811598881 · Psychologist · Temecula, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maria S. Flax, PH.D., Licensed Psychologist, Inc. is a Psychologist organization in Temecula, CA (NPI 1811598881).
Provider details
- NPI number
- 1811598881
- Entity type
- Organization
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Organization subpart
- No
- Authorized official
- Maria Flax, President/Owner(951) 972-2841
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
5 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
Other names (DBA / former)
- Other name
- Jefferson Family Services, Inc.
Registry dates
- Enumerated
- 2020-11-05
- Last updated
- 2025-11-22
- Certified
- 2025-11-22
Frequently asked questions
- What is Maria S. Flax, PH.D., Licensed Psychologist, Inc.'s NPI number?
- Maria S. Flax, PH.D., Licensed Psychologist, Inc.'s National Provider Identifier (NPI) is 1811598881, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Maria S. Flax, PH.D., Licensed Psychologist, Inc.?
- Maria S. Flax, PH.D., Licensed Psychologist, Inc. is classified in the NPPES registry as Psychologist (Behavioral Health & Social Service Providers).
- Where is Maria S. Flax, PH.D., Licensed Psychologist, Inc. located?
- Maria S. Flax, PH.D., Licensed Psychologist, Inc.'s practice location on file with NPPES is 27715 Jefferson Ave Ste 112, Temecula, CA 92590-6601.
- What is Maria S. Flax, PH.D., Licensed Psychologist, Inc.'s phone number?
- The practice phone number listed in the NPPES registry for Maria S. Flax, PH.D., Licensed Psychologist, Inc. is (951) 972-2841.
- Does Maria S. Flax, PH.D., Licensed Psychologist, Inc. accept Medicare?
- Maria S. Flax, PH.D., Licensed Psychologist, Inc. is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Maria S. Flax, PH.D., Licensed Psychologist, Inc.?
- The authorized official listed on Maria S. Flax, PH.D., Licensed Psychologist, Inc.'s NPPES record is Maria Flax, President/Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Maria S. Flax, PH.D., Licensed Psychologist, Inc.'s NPI active?
- Yes — Maria S. Flax, PH.D., Licensed Psychologist, Inc.'s NPI (1811598881) is active in the NPPES registry as of the last update on 2025-11-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.