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

Mrs. Nancy Lee Longo, LCSW

Individual provider Mental Health Counselor · NPI 1497113302

Mrs. Nancy Lee Longo, LCSW is a Mental Health Counselor in Ontario, California. Practices as a sole proprietor and works from 2 locations. Licensed in California.

Licensed in
CA
In the registry since
2016
Specialties on file
3
What do these letters mean?
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.

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Practice location Address checks out

855 N Euclid Ave
Ontario, CA 91762
Phone: (909) 983-2020
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 4164 Brockton Ave, Riverside, CA 92501-3400 — (951) 683-5193

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 99279 (CA)
Mental Health Counselor Taxonomy 101YM0800X · Licence 76603 (CA)
Social Worker Taxonomy 104100000X

Record details

NPI number1497113302
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW
Sole proprietorYes
NPI enumeratedFebruary 5, 2016
Last updated in NPPESJanuary 6, 2021
Certification dateJanuary 6, 2021

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