Marissa Cassar, PHD
NPI 1528845831 · Clinical Psychologist · Santa Clara, CA
Enrolled with Medicare as Practitioner - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marissa Cassar, PHD is a Clinical Psychologist provider in Santa Clara, CA (NPI 1528845831).
Provider details
- NPI number
- 1528845831
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Clinical Child & Adolescent Psychologist103TC2200X
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
2 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2023-09-11
- Last updated
- 2025-08-19
- Certified
- 2023-09-11
Frequently asked questions
- What is Marissa Cassar's NPI number?
- Marissa Cassar's National Provider Identifier (NPI) is 1528845831, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marissa Cassar's specialty?
- Marissa Cassar is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Marissa Cassar located?
- Marissa Cassar's practice location on file with NPPES is 710 Lawrence Express Way, Santa Clara, CA 95051.
- What is Marissa Cassar's phone number?
- The practice phone number listed in the NPPES registry for Marissa Cassar is (408) 851-1174.
- Does Marissa Cassar accept Medicare?
- Marissa Cassar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marissa Cassar's NPI active?
- Yes — Marissa Cassar's NPI (1528845831) is active in the NPPES registry as of the last update on 2025-08-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.