Jason Johannesen, PHD
NPI 1215352836 · Clinical Psychologist · West Haven, CT
Jason Johannesen, PHD is a Clinical Psychologist provider in West Haven, CT (NPI 1215352836).
Provider details
- NPI number
- 1215352836
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Male
- Sole proprietor
- No
- License
- 003277 (CT)
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
12 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
- 2014-02-19
- Last updated
- 2014-02-19
Frequently asked questions
- What is Jason Johannesen's NPI number?
- Jason Johannesen's National Provider Identifier (NPI) is 1215352836, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jason Johannesen's specialty?
- Jason Johannesen is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Jason Johannesen located?
- Jason Johannesen's practice location on file with NPPES is 950 Campbell Ave, West Haven, CT 06516-2770.
- What is Jason Johannesen's phone number?
- The practice phone number listed in the NPPES registry for Jason Johannesen is (203) 932-5711.
- Is Jason Johannesen's NPI active?
- Yes — Jason Johannesen's NPI (1215352836) is active in the NPPES registry as of the last update on 2014-02-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.