Elizabeth Niarhos
NPI 1619447455 · Addiction (Substance Use Disorder) Counselor · Oakland, CA
Elizabeth Niarhos is a Addiction (Substance Use Disorder) Counselor provider in Oakland, CA (NPI 1619447455).
Provider details
- NPI number
- 1619447455
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- Yes
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
7 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
- 2018-12-04
- Last updated
- 2018-12-04
Frequently asked questions
- What is Elizabeth Niarhos's NPI number?
- Elizabeth Niarhos's National Provider Identifier (NPI) is 1619447455, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Elizabeth Niarhos's specialty?
- Elizabeth Niarhos is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Elizabeth Niarhos located?
- Elizabeth Niarhos's practice location on file with NPPES is 10850 Macarthur Blvd., Oakland, CA 94605.
- What is Elizabeth Niarhos's phone number?
- The practice phone number listed in the NPPES registry for Elizabeth Niarhos is (510) 759-4346.
- Is Elizabeth Niarhos's NPI active?
- Yes — Elizabeth Niarhos's NPI (1619447455) is active in the NPPES registry as of the last update on 2018-12-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.