Finn Sonder, LMFT
NPI 1528990280 · Marriage & Family Therapist · Oakland, CA
Finn Sonder, LMFT is a Marriage & Family Therapist provider in Oakland, CA (NPI 1528990280).
Provider details
- NPI number
- 1528990280
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- LMFT
- Sex
- Male
- Sole proprietor
- Yes
- License
- 162210 (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
Under 1 yr in registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 3045 Santiago StSan Francisco, CA 94116-1526Phone: (510) 269-7703
Registry dates
- Enumerated
- 2026-05-29
- Last updated
- 2026-05-29
- Certified
- 2026-05-29
Frequently asked questions
- What is Finn Sonder's NPI number?
- Finn Sonder's National Provider Identifier (NPI) is 1528990280, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Finn Sonder's specialty?
- Finn Sonder is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Finn Sonder located?
- Finn Sonder's practice location on file with NPPES is 495 Jackson St # 1520, Oakland, CA 94607-4329.
- What is Finn Sonder's phone number?
- The practice phone number listed in the NPPES registry for Finn Sonder is (510) 269-7703.
- Is Finn Sonder's NPI active?
- Yes — Finn Sonder's NPI (1528990280) is active in the NPPES registry as of the last update on 2026-05-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.