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

Mariellen O'Brien

Individual provider Social Worker · NPI 1578697637

Mariellen O'Brien is a Social Worker in Auburn, California. Practices as a sole proprietor. Registered with an NPI since 2007.

In the registry since
2007

Practice location Address checks out

11716 Enterprise Dr
Auburn, CA 95603-3732
Phone: (530) 889-6700
Show map & directions

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

Specialties & licences

Social Worker (primary) Taxonomy 104100000X

Record details

NPI number1578697637
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorYes
NPI enumeratedMarch 14, 2007
Last updated in NPPESJuly 8, 2007

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