IndividualActive
Susan Leffler
NPI 1598033912 · Clinical Social Worker · Fairfield, CA
Susan Leffler is a Clinical Social Worker provider in Fairfield, CA (NPI 1598033912).
Provider details
- NPI number
- 1598033912
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(74/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 yrs in NPPES registry
- Profile completeness38% of score
83% 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
1401 Union Ave Apt D
Fairfield, CA 94533-5040
Phone: (707) 720-8235
Street-level locationGet directions
Mailing address
Po Box 1254
Empire, CA 95319-1254
Registry dates
- Enumerated
- 2011-12-13
- Last updated
- 2011-12-13
Frequently asked questions
- What is Susan Leffler's NPI number?
- Susan Leffler's National Provider Identifier (NPI) is 1598033912, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Susan Leffler's specialty?
- Susan Leffler is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Susan Leffler located?
- Susan Leffler's practice location on file with NPPES is 1401 Union Ave Apt D, Fairfield, CA 94533-5040.
- What is Susan Leffler's phone number?
- The practice phone number listed in the NPPES registry for Susan Leffler is (707) 720-8235.
- Is Susan Leffler's NPI active?
- Yes — Susan Leffler's NPI (1598033912) is active in the NPPES registry as of the last update on 2011-12-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.