Fiachra O'Sullivan, LMFT
NPI 1760785927 · Marriage & Family Therapist · San Francisco, CA
Fiachra O'Sullivan, LMFT is a Marriage & Family Therapist provider in San Francisco, CA (NPI 1760785927).
Provider details
- NPI number
- 1760785927
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- LMFT
- Sex
- Male
- Sole proprietor
- Yes
- License
- 79062 (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
15 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
- 2010-12-09
- Last updated
- 2026-02-08
- Certified
- 2026-02-08
Frequently asked questions
- What is Fiachra O'Sullivan's NPI number?
- Fiachra O'Sullivan's National Provider Identifier (NPI) is 1760785927, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Fiachra O'Sullivan's specialty?
- Fiachra O'Sullivan is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Fiachra O'Sullivan located?
- Fiachra O'Sullivan's practice location on file with NPPES is 999 Sutter St, San Francisco, CA 94109-6023.
- What is Fiachra O'Sullivan's phone number?
- The practice phone number listed in the NPPES registry for Fiachra O'Sullivan is (415) 967-3447.
- Is Fiachra O'Sullivan's NPI active?
- Yes — Fiachra O'Sullivan's NPI (1760785927) is active in the NPPES registry as of the last update on 2026-02-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.