Seth Williams, LMFT
NPI 1720229552 · Marriage & Family Therapist · San Diego, CA
Seth Williams, LMFT is a Marriage & Family Therapist provider in San Diego, CA (NPI 1720229552).
Provider details
- NPI number
- 1720229552
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- LMFT
- Sex
- Male
- Sole proprietor
- No
- License
- LMFT85719 (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
- 2009-03-06
- Last updated
- 2018-07-02
Frequently asked questions
- What is Seth Williams's NPI number?
- Seth Williams's National Provider Identifier (NPI) is 1720229552, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Seth Williams's specialty?
- Seth Williams is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Seth Williams located?
- Seth Williams's practice location on file with NPPES is 3555 Kenyon St Ste 101, San Diego, CA 92110.
- What is Seth Williams's phone number?
- The practice phone number listed in the NPPES registry for Seth Williams is (619) 600-0683.
- Is Seth Williams's NPI active?
- Yes — Seth Williams's NPI (1720229552) is active in the NPPES registry as of the last update on 2018-07-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.