Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Karen Kastein, RN

Individual provider Addiction (Substance Use Disorder) Registered Nurse · NPI 1932650488

Karen Kastein, RN is an Addiction (Substance Use Disorder) Registered Nurse in Oakland, California. Licensed in California. Registered with an NPI since 2016.

Licensed in
CA
In the registry since
2016
What do these letters mean?
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.

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Practice location Address checks out

10850 Macarthur Blvd Ste 200
Oakland, CA 94605-5266
Phone: (510) 875-2300
Fax: (510) 875-2310
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Addiction (Substance Use Disorder) Registered Nurse (primary) Taxonomy 163WA0400X · Licence 95107887 (CA)

Record details

NPI number1932650488
Entity typeIndividual (Type 1)
GenderFemale
Credentials RN
Sole proprietorNo
NPI enumeratedOctober 19, 2016
Last updated in NPPESOctober 19, 2016
Mailing address10850 Macarthur Blvd Ste 200, Oakland, CA 94605-5266

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