Martha Sager, LCSW
NPI 1215151360 · Clinical Social Worker · Castro Valley, CA
Martha Sager, LCSW is a Clinical Social Worker provider in Castro Valley, CA (NPI 1215151360).
Provider details
- NPI number
- 1215151360
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- No
- License
- LCSW 1497 (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
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
Mailing address
Registry dates
- Enumerated
- 2007-04-12
- Last updated
- 2007-07-08
Frequently asked questions
- What is Martha Sager's NPI number?
- Martha Sager's National Provider Identifier (NPI) is 1215151360, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Martha Sager's specialty?
- Martha Sager is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Martha Sager located?
- Martha Sager's practice location on file with NPPES is 20212 Redwood Road, Castro Valley, CA 94546.
- What is Martha Sager's phone number?
- The practice phone number listed in the NPPES registry for Martha Sager is (510) 297-4047.
- Is Martha Sager's NPI active?
- Yes — Martha Sager's NPI (1215151360) 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.