IndividualActive
Jill Mason, LCSW
NPI 1144399148 · Clinical Social Worker · San Leandro, CA
Jill Mason, LCSW is a Clinical Social Worker provider in San Leandro, CA (NPI 1144399148).
Provider details
- NPI number
- 1144399148
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- No
- License
- LCS22567 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(90/100 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
2275 Arlington Dr
San Leandro, CA 94578-1132
Phone: (510) 317-1444
Street-level locationGet directions
Mailing address
1111 E University Dr
Tempe, AZ 85281-4256
Registry dates
- Enumerated
- 2006-11-06
- Last updated
- 2007-07-08
Frequently asked questions
- What is Jill Mason's NPI number?
- Jill Mason's National Provider Identifier (NPI) is 1144399148, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jill Mason's specialty?
- Jill Mason is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Jill Mason located?
- Jill Mason's practice location on file with NPPES is 2275 Arlington Dr, San Leandro, CA 94578-1132.
- What is Jill Mason's phone number?
- The practice phone number listed in the NPPES registry for Jill Mason is (510) 317-1444.
- Is Jill Mason's NPI active?
- Yes — Jill Mason's NPI (1144399148) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.