Barbara Darby
NPI 1023782257 · Addiction (Substance Use Disorder) Counselor · San Francisco, CA
Barbara Darby is a Addiction (Substance Use Disorder) Counselor provider in San Francisco, CA (NPI 1023782257).
Provider details
- NPI number
- 1023782257
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- Yes
- License
- R1439800721 (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
4 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
- 2021-08-02
- Last updated
- 2021-08-02
- Certified
- 2021-08-02
Frequently asked questions
- What is Barbara Darby's NPI number?
- Barbara Darby's National Provider Identifier (NPI) is 1023782257, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Barbara Darby's specialty?
- Barbara Darby is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Barbara Darby located?
- Barbara Darby's practice location on file with NPPES is 1111 Market St, San Francisco, CA 94103-1509.
- What is Barbara Darby's phone number?
- The practice phone number listed in the NPPES registry for Barbara Darby is (415) 863-3883.
- Is Barbara Darby's NPI active?
- Yes — Barbara Darby's NPI (1023782257) is active in the NPPES registry as of the last update on 2021-08-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.