Jennifer Duncan
NPI 1427204742 · Addiction (Substance Use Disorder) Counselor · Sacramento, CA
Jennifer Duncan is a Addiction (Substance Use Disorder) Counselor provider in Sacramento, CA (NPI 1427204742).
Provider details
- NPI number
- 1427204742
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
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
17 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
Mailing address
Registry dates
- Enumerated
- 2008-08-18
- Last updated
- 2013-01-17
Frequently asked questions
- What is Jennifer Duncan's NPI number?
- Jennifer Duncan's National Provider Identifier (NPI) is 1427204742, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jennifer Duncan's specialty?
- Jennifer Duncan is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Jennifer Duncan located?
- Jennifer Duncan's practice location on file with NPPES is 310 Harris Ave, Sacramento, CA 95838-3249.
- What is Jennifer Duncan's phone number?
- The practice phone number listed in the NPPES registry for Jennifer Duncan is (916) 649-6794.
- Is Jennifer Duncan's NPI active?
- Yes — Jennifer Duncan's NPI (1427204742) is active in the NPPES registry as of the last update on 2013-01-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.