Karen Kastein, R.N.
NPI 1932650488 · Addiction (Substance Use Disorder) Registered Nurse · Oakland, CA
Karen Kastein, R.N. is a Addiction (Substance Use Disorder) Registered Nurse provider in Oakland, CA (NPI 1932650488).
Provider details
- NPI number
- 1932650488
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) Registered NurseNursing Service Providers
- Credential
- R.N.
- Sex
- Female
- Sole proprietor
- No
- License
- 95107887 (CA)
Specialties & taxonomies
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 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
- 2016-10-19
- Last updated
- 2016-10-19
Frequently asked questions
- What is Karen Kastein's NPI number?
- Karen Kastein's National Provider Identifier (NPI) is 1932650488, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Kastein's specialty?
- Karen Kastein is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Registered Nurse (Nursing Service Providers).
- Where is Karen Kastein located?
- Karen Kastein's practice location on file with NPPES is 10850 Macarthur Blvd Ste 200, Oakland, CA 94605-5266.
- What is Karen Kastein's phone number?
- The practice phone number listed in the NPPES registry for Karen Kastein is (510) 875-2300.
- Is Karen Kastein's NPI active?
- Yes — Karen Kastein's NPI (1932650488) is active in the NPPES registry as of the last update on 2016-10-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.