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

Sharon Hasslen, MS

Individual provider Psychologist · NPI 1952701955

Sharon Hasslen, MS is a Psychologist in Fairfield, California. Practices as a sole proprietor. Registered with an NPI since 2014.

In the registry since
2014
What do these letters mean?
MS — Master of Science
A graduate science degree.

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Practice location Address checks out

801 Empire St
Fairfield, CA 94533-5702
Phone: (707) 425-5744
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X

Record details

NPI number1952701955
Entity typeIndividual (Type 1)
GenderFemale
Credentials MS
Sole proprietorYes
NPI enumeratedAugust 27, 2014
Last updated in NPPESAugust 27, 2014
Mailing address805 Evergreen St, Menlo Park, CA 94025-5760

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