IndividualActive
Matthew Day, L.C.S.W.
NPI 1235345869 · Clinical Social Worker · Oakland, CA
Matthew Day, L.C.S.W. is a Clinical Social Worker provider in Oakland, CA (NPI 1235345869).
Provider details
- NPI number
- 1235345869
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- L.C.S.W.
- Sex
- Male
- Sole proprietor
- No
- License
- 23642 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(89/100 index)
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
616 16th St
Oakland, CA 94612-1205
Phone: (510) 451-4270
Street-level locationGet directions
Mailing address
616 16th St
Oakland, CA 94612-1205
Registry dates
- Enumerated
- 2007-05-14
- Last updated
- 2007-07-16
Frequently asked questions
- What is Matthew Day's NPI number?
- Matthew Day's National Provider Identifier (NPI) is 1235345869, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Day's specialty?
- Matthew Day is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Matthew Day located?
- Matthew Day's practice location on file with NPPES is 616 16th St, Oakland, CA 94612-1205.
- What is Matthew Day's phone number?
- The practice phone number listed in the NPPES registry for Matthew Day is (510) 451-4270.
- Is Matthew Day's NPI active?
- Yes — Matthew Day's NPI (1235345869) is active in the NPPES registry as of the last update on 2007-07-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.