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

Courtney Derosia, MS

Individual provider Marriage & Family Therapist · NPI 1548600562

Courtney Derosia, MS is a Marriage & Family Therapist in Fontana, California. Licensed in California. Registered with an NPI since 2013.

Licensed in
CA
In the registry since
2013
What do these letters mean?
MS — Master of Science
A graduate science degree.

See every abbreviation used in this directory →

Practice location Address checks out

9310 Sierra Ave
Fontana, CA 92335-5711
Phone: (866) 205-3595
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Marriage & Family Therapist (primary) Taxonomy 106H00000X · Licence 87985 (CA)

Record details

NPI number1548600562
Entity typeIndividual (Type 1)
GenderFemale
Credentials MS
Sole proprietorNo
NPI enumeratedJuly 5, 2013
Last updated in NPPESJanuary 10, 2020
Certification dateJanuary 10, 2020

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