Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Deborah Diferdinando, PSYD, MFT, CADCII

Individual provider Clinical Psychologist · NPI 1609978931

Dr. Deborah Diferdinando, PSYD, MFT, CADCII is a Clinical Psychologist in Carlsbad, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2006
Specialties on file
3
What do these letters mean?
PSYD — Doctor of Psychology
A doctoral psychologist trained primarily for clinical practice.
MFT — Marriage and Family Therapist
A therapist who treats couples and families.

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Practice location Address checks out

2564 State St Ste B
Carlsbad, CA 92008-1662
Phone: (760) 822-4877
Fax: (760) 842-1313
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence PSY22608 (CA)
Marriage & Family Therapist Taxonomy 106H00000X · Licence MFC37170 (CA)
Addiction (Substance Use Disorder) Counselor Taxonomy 101YA0400X · Licence A8381801 (CA)

Record details

NPI number1609978931
Entity typeIndividual (Type 1)
GenderFemale
Credentials PSYD , MFT , CADCII
Sole proprietorYes
NPI enumeratedSeptember 5, 2006
Last updated in NPPESAugust 16, 2009

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