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

Joseph Osullivan-Trevena

Individual provider Mental Health Counselor · NPI 1861110983

Joseph Osullivan-Trevena is a Mental Health Counselor in San Leandro, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2022
Specialties on file
2

Practice location Address checks out

3081 Teagarden St
San Leandro, CA 94577-5720
Phone: (510) 347-4620
Show map & directions

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

Specialties & licences

Mental Health Counselor (primary) Taxonomy 101YM0800X
Mental Health Counselor Taxonomy 101YM0800X (CA)

Record details

NPI number1861110983
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedAugust 15, 2022
Last updated in NPPESAugust 15, 2022
Certification dateAugust 15, 2022

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