Justin Castello, PH.D.
NPI 1912364720 · Clinical Psychologist · Berkeley, CA
Justin Castello, PH.D. is a Clinical Psychologist provider in Berkeley, CA (NPI 1912364720).
Provider details
- NPI number
- 1912364720
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Male
- Sole proprietor
- No
- License
- PSY27747 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
10 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
- 2016-01-25
- Last updated
- 2016-01-25
Frequently asked questions
- What is Justin Castello's NPI number?
- Justin Castello's National Provider Identifier (NPI) is 1912364720, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Justin Castello's specialty?
- Justin Castello is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Justin Castello located?
- Justin Castello's practice location on file with NPPES is 2222 Bancroft Way # Mc4300, Berkeley, CA 94720-4301.
- What is Justin Castello's phone number?
- The practice phone number listed in the NPPES registry for Justin Castello is (510) 643-5808.
- Is Justin Castello's NPI active?
- Yes — Justin Castello's NPI (1912364720) is active in the NPPES registry as of the last update on 2016-01-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.