Rhiannon Duncan, CADC-II
NPI 1700426459 · Addiction (Substance Use Disorder) Counselor · Sacramento, CA
Rhiannon Duncan, CADC-II is a Addiction (Substance Use Disorder) Counselor provider in Sacramento, CA (NPI 1700426459).
Provider details
- NPI number
- 1700426459
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Credential
- CADC-II
- Sex
- Female
- Sole proprietor
- No
- License
- A064380624 (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
6 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
- 2020-01-10
- Last updated
- 2024-08-01
- Certified
- 2024-08-01
Frequently asked questions
- What is Rhiannon Duncan's NPI number?
- Rhiannon Duncan's National Provider Identifier (NPI) is 1700426459, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rhiannon Duncan's specialty?
- Rhiannon Duncan is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Rhiannon Duncan located?
- Rhiannon Duncan's practice location on file with NPPES is 1550 Juliesse Ave, Sacramento, CA 95815-1803.
- What is Rhiannon Duncan's phone number?
- The practice phone number listed in the NPPES registry for Rhiannon Duncan is (916) 921-6598.
- Is Rhiannon Duncan's NPI active?
- Yes — Rhiannon Duncan's NPI (1700426459) is active in the NPPES registry as of the last update on 2024-08-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.