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William Janzen, PHD
NPI 1043356603 · Clinical Psychologist · Metairie, LA
William Janzen, PHD is a Clinical Psychologist provider in Metairie, LA (NPI 1043356603).
Provider details
- NPI number
- 1043356603
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Male
- Sole proprietor
- No
- License
- 462 (LA)
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
3445 N Causeway Blvd
Suite 601
Metairie, LA 70002
Phone: (504) 834-2606
Fax: (504) 834-2589
Street-level locationGet directions
Mailing address
Po Box 8324
Metairie, LA 70011-8324
Registry dates
- Enumerated
- 2007-01-30
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Janzen's NPI number?
- William Janzen's National Provider Identifier (NPI) is 1043356603, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Janzen's specialty?
- William Janzen is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is William Janzen located?
- William Janzen's practice location on file with NPPES is 3445 N Causeway Blvd, Metairie, LA 70002.
- What is William Janzen's phone number?
- The practice phone number listed in the NPPES registry for William Janzen is (504) 834-2606.
- Is William Janzen's NPI active?
- Yes — William Janzen's NPI (1043356603) 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.