William Simpson, MFT
NPI 1912072661 · Marriage & Family Therapist · San Diego, CA
William Simpson, MFT is a Marriage & Family Therapist provider in San Diego, CA (NPI 1912072661).
Provider details
- NPI number
- 1912072661
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- MFT
- Sex
- Male
- Sole proprietor
- No
- License
- MFC39347 (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
- 2006-11-21
- Last updated
- 2011-03-03
Frequently asked questions
- What is William Simpson's NPI number?
- William Simpson's National Provider Identifier (NPI) is 1912072661, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Simpson's specialty?
- William Simpson is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is William Simpson located?
- William Simpson's practice location on file with NPPES is 1202 Morena Blvd Ste 300, San Diego, CA 92110-3844.
- What is William Simpson's phone number?
- The practice phone number listed in the NPPES registry for William Simpson is (619) 312-5490.
- Is William Simpson's NPI active?
- Yes — William Simpson's NPI (1912072661) is active in the NPPES registry as of the last update on 2011-03-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.