William Joiner, MS, LMFT
NPI 1295951069 · Marriage & Family Therapist · Los Angeles, CA
William Joiner, MS, LMFT is a Marriage & Family Therapist provider in Los Angeles, CA (NPI 1295951069).
Provider details
- NPI number
- 1295951069
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- MS, LMFT
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Marriage & Family Therapist106H00000X
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
83% 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
- 2007-04-18
- Last updated
- 2008-07-25
Frequently asked questions
- What is William Joiner's NPI number?
- William Joiner's National Provider Identifier (NPI) is 1295951069, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Joiner's specialty?
- William Joiner is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is William Joiner located?
- William Joiner's practice location on file with NPPES is 5050 Coliseum St, Los Angeles, CA 90016-5328.
- What is William Joiner's phone number?
- The practice phone number listed in the NPPES registry for William Joiner is (323) 296-5182.
- Is William Joiner's NPI active?
- Yes — William Joiner's NPI (1295951069) is active in the NPPES registry as of the last update on 2008-07-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.