IndividualActive
Louis Diaz, LCSW
NPI 1952455339 · Clinical Social Worker · Concord, CA
Louis Diaz, LCSW is a Clinical Social Worker provider in Concord, CA (NPI 1952455339).
Provider details
- NPI number
- 1952455339
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- No
- License
- 6019 (CA)
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
1420 Willow Pass Rd
Concord, CA 94520-5223
Phone: (925) 646-5480
Fax: (925) 646-5754
Street-level locationGet directions
Mailing address
77 Alta Vista Ave
Mill Valley, CA 94941-1315
Registry dates
- Enumerated
- 2007-01-22
- Last updated
- 2007-07-08
Frequently asked questions
- What is Louis Diaz's NPI number?
- Louis Diaz's National Provider Identifier (NPI) is 1952455339, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Louis Diaz's specialty?
- Louis Diaz is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Louis Diaz located?
- Louis Diaz's practice location on file with NPPES is 1420 Willow Pass Rd, Concord, CA 94520-5223.
- What is Louis Diaz's phone number?
- The practice phone number listed in the NPPES registry for Louis Diaz is (925) 646-5480.
- Is Louis Diaz's NPI active?
- Yes — Louis Diaz's NPI (1952455339) 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.