William Chappelle
NPI 1821223215 · Marriage & Family Therapist · Los Angeles, CA
William Chappelle is a Marriage & Family Therapist provider in Los Angeles, CA (NPI 1821223215).
Provider details
- NPI number
- 1821223215
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- Yes
- License
- MFC39683 (CA)
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
17 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
- 2009-05-28
- Last updated
- 2009-05-28
Frequently asked questions
- What is William Chappelle's NPI number?
- William Chappelle's National Provider Identifier (NPI) is 1821223215, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Chappelle's specialty?
- William Chappelle is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is William Chappelle located?
- William Chappelle's practice location on file with NPPES is 12301 Wilshire Blvd, Los Angeles, CA 90025-1007.
- What is William Chappelle's phone number?
- The practice phone number listed in the NPPES registry for William Chappelle is (310) 399-1638.
- Is William Chappelle's NPI active?
- Yes — William Chappelle's NPI (1821223215) is active in the NPPES registry as of the last update on 2009-05-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.