IndividualActive
John (jay) Slosar, PH.D.
NPI 1538225123 · Psychologist · Irvine, CA
John (jay) Slosar, PH.D. is a Psychologist provider in Irvine, CA (NPI 1538225123).
Provider details
- NPI number
- 1538225123
- Entity type
- Individual
- Primary specialty
- PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- PSY9158 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
7 Corporate Park Ste 235
Irvine, CA 92606-5157
Phone: (949) 851-8277
Fax: (949) 852-0220
Street-level locationGet directions
Mailing address
7 Corporate Park Ste 235
Irvine, CA 92606-5157
Registry dates
- Enumerated
- 2006-12-28
- Last updated
- 2007-07-08
Frequently asked questions
- What is John (jay) Slosar's NPI number?
- John (jay) Slosar's National Provider Identifier (NPI) is 1538225123, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John (jay) Slosar's specialty?
- John (jay) Slosar is listed in the NPPES registry with a primary specialty of Psychologist (Behavioral Health & Social Service Providers).
- Where is John (jay) Slosar located?
- John (jay) Slosar's practice location on file with NPPES is 7 Corporate Park Ste 235, Irvine, CA 92606-5157.
- What is John (jay) Slosar's phone number?
- The practice phone number listed in the NPPES registry for John (jay) Slosar is (949) 851-8277.
- Is John (jay) Slosar's NPI active?
- Yes — John (jay) Slosar's NPI (1538225123) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.