William Singleton, PH. D., M.F.T.
NPI 1336239425 · Marriage & Family Therapist · Santa Ana, CA
William Singleton, PH. D., M.F.T. is a Marriage & Family Therapist provider in Santa Ana, CA (NPI 1336239425).
Provider details
- NPI number
- 1336239425
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- PH. D., M.F.T.
- Sex
- Male
- Sole proprietor
- Yes
- License
- MFC 36327 (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
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
- 2007-07-08
Frequently asked questions
- What is William Singleton's NPI number?
- William Singleton's National Provider Identifier (NPI) is 1336239425, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Singleton's specialty?
- William Singleton is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is William Singleton located?
- William Singleton's practice location on file with NPPES is 2130 E 4th St, Santa Ana, CA 92705-3818.
- What is William Singleton's phone number?
- The practice phone number listed in the NPPES registry for William Singleton is (714) 543-5437.
- Is William Singleton's NPI active?
- Yes — William Singleton's NPI (1336239425) 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.