William B. Janzen, PHD
Clinical Psychologist · Metairie, LA
William B. Janzen, PHD is a clinical psychologist with a practice address in Metairie, Louisiana, and NPI 1043356603, issued on Jan 30, 2007. Check the license (Louisiana 462, as entered in NPPES) with the Louisiana board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- William B. Janzen
- Credential
- PHD
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- 462 LA
Self-reported in NPPES; status is on the state search - Practice location
- 3445 N Causeway Blvd, Metairie, LA 70002
- Phone
- (504) 834-2606
- Enumerated
- Jan 30, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (504) 834-2589
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 373 in Louisiana → Look up another NPI →
Also registered at 3445 N Causeway Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Megan LiebertFamily Nurse Practitioner1093594509
Verify William B. Janzen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Louisiana board licenses this profession
Search for license 462Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
William B. Janzen among 373 clinical psychologist records in Louisiana
William B. Janzen, PHD is one of 373 clinical psychologist records with a practice address in Louisiana. 15% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2007, is newer than 22% of them.
- NPI issued2007 · 22% of these records are older, 58% newer
- In a Medicare fileNo · 15% of these records are
- In the CMS Doctors and Clinicians fileNo · 20% of these records are
- Record last updated2007 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103TC0700X and a Louisiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Clinical Psychologist providers in Louisiana
There are 373 clinical psychologist records in Louisiana. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 373 in Louisiana → Every provider in Metairie → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Megan Alsop, PSY.D.Metairie, LA 700021689948218
- Susan Andrews, PH DMetairie, LA 700021649203514
- Melissa Aubert, PH.D.Metairie, LA 700021407037740
- Randee Booksh, PH.DMetairie, LA 700021366616195
- Ronald Cambias, PSY.D.Metairie, LA 700021447207485
- Robert Davis, PSY. D.Metairie, LA 700021114937638
- Emily Macdougall, PHDMetairie, LA 700021487167136
- Kiran Mirchandani, PSY.D.Metairie, LA 700021992346233
Common questions
What is William B. Janzen, PHD's NPI number?
William B. Janzen, PHD's National Provider Identifier (NPI) is 1043356603, issued on Jan 30, 2007. An NPI identifies a provider in billing; it is not a license.
Where is William B. Janzen, PHD located?
The NPPES record lists a practice address at 3445 N Causeway Blvd, Metairie, LA, 70002. Phone: (504) 834-2606. Providers update this record themselves, so call before visiting.
How can I verify William B. Janzen, PHD's license?
NPPES lists Louisiana license number 462, as entered by the provider. Search the Louisiana board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.