Walker Marsh, PHD LMFT
NPI 1992895635 · Addiction (Substance Use Disorder) Counselor · Slidell, LA
Walker Marsh, PHD LMFT is a Addiction (Substance Use Disorder) Counselor provider in Slidell, LA (NPI 1992895635).
Provider details
- NPI number
- 1992895635
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Credential
- PHD LMFT
- Sex
- Male
- Sole proprietor
- Yes
- License
- MFT-345 (LA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
- Pastoral Counselor101YP1600X
Behavioral Health & Social Service Providers
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
- 2006-10-13
- Last updated
- 2025-09-11
Frequently asked questions
- What is Walker Marsh's NPI number?
- Walker Marsh's National Provider Identifier (NPI) is 1992895635, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Walker Marsh's specialty?
- Walker Marsh is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Walker Marsh located?
- Walker Marsh's practice location on file with NPPES is 85 Whisperwood Blvd, Slidell, LA 70458-1136.
- What is Walker Marsh's phone number?
- The practice phone number listed in the NPPES registry for Walker Marsh is (985) 661-0560.
- Is Walker Marsh's NPI active?
- Yes — Walker Marsh's NPI (1992895635) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.