William Marvin, L.C.S.W.
NPI 1649294547 · Clinical Social Worker · Metairie, LA
William Marvin, L.C.S.W. is a Clinical Social Worker provider in Metairie, LA (NPI 1649294547).
Provider details
- NPI number
- 1649294547
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- L.C.S.W.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 2980 (LA)
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
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
Mailing address
Registry dates
- Enumerated
- 2006-07-26
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Marvin's NPI number?
- William Marvin's National Provider Identifier (NPI) is 1649294547, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Marvin's specialty?
- William Marvin is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is William Marvin located?
- William Marvin's practice location on file with NPPES is 3801 N Causeway Blvd, Metairie, LA 70002-1737.
- What is William Marvin's phone number?
- The practice phone number listed in the NPPES registry for William Marvin is (504) 832-9929.
- Is William Marvin's NPI active?
- Yes — William Marvin's NPI (1649294547) 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.