Olivia Ishak
NPI 1588069165 · Marriage & Family Therapist · La Verne, CA
Olivia Ishak is a Marriage & Family Therapist provider in La Verne, CA (NPI 1588069165).
Provider details
- NPI number
- 1588069165
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- Yes
- License
- 108287 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
11 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 1126 W Foothill Blvd Ste 150Upland, CA 91786-3778Phone: (626) 319-0564
Registry dates
- Enumerated
- 2014-10-25
- Last updated
- 2021-11-03
- Certified
- 2021-11-03
Frequently asked questions
- What is Olivia Ishak's NPI number?
- Olivia Ishak's National Provider Identifier (NPI) is 1588069165, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Olivia Ishak's specialty?
- Olivia Ishak is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Olivia Ishak located?
- Olivia Ishak's practice location on file with NPPES is 1350 3rd St, La Verne, CA 91750-5201.
- What is Olivia Ishak's phone number?
- The practice phone number listed in the NPPES registry for Olivia Ishak is (626) 319-0564.
- Is Olivia Ishak's NPI active?
- Yes — Olivia Ishak's NPI (1588069165) is active in the NPPES registry as of the last update on 2021-11-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.