IndividualActive
Marianna Singwi-Ferrono
NPI 1164389581 · School Social Worker · Oakland, CA
Marianna Singwi-Ferrono is a School Social Worker provider in Oakland, CA (NPI 1164389581).
Provider details
- NPI number
- 1164389581
- Entity type
- Individual
- Primary specialty
- School Social WorkerBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 104367 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(53/100 index)
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
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
4521 Webster St
Oakland, CA 94609-2140
Phone: (510) 879-1353
Street-level locationGet directions
Mailing address
1011 Union St
Oakland, CA 94607-2236
Registry dates
- Enumerated
- 2026-01-07
- Last updated
- 2026-01-07
- Certified
- 2026-01-07
Frequently asked questions
- What is Marianna Singwi-Ferrono's NPI number?
- Marianna Singwi-Ferrono's National Provider Identifier (NPI) is 1164389581, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marianna Singwi-Ferrono's specialty?
- Marianna Singwi-Ferrono is listed in the NPPES registry with a primary specialty of School Social Worker (Behavioral Health & Social Service Providers).
- Where is Marianna Singwi-Ferrono located?
- Marianna Singwi-Ferrono's practice location on file with NPPES is 4521 Webster St, Oakland, CA 94609-2140.
- What is Marianna Singwi-Ferrono's phone number?
- The practice phone number listed in the NPPES registry for Marianna Singwi-Ferrono is (510) 879-1353.
- Is Marianna Singwi-Ferrono's NPI active?
- Yes — Marianna Singwi-Ferrono's NPI (1164389581) is active in the NPPES registry as of the last update on 2026-01-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.