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

Dr. Linda J Trettin, PHD

Individual provider Clinical Psychologist · NPI 1356669287

Dr. Linda J Trettin, PHD is a Clinical Psychologist in Folsom, California. Qualified in 2007, 19 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in California.

Years since qualifying
19
Licensed in
CA
In the registry since
2010
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

9580 Oak Avenue Pkwy Ste 7
Folsom, CA 95630-9997
Phone: (916) 399-3961
Fax: (833) 968-1890
Show map & directions

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

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence PSY23452 (CA)

Record details

NPI number1356669287
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorYes
NPI enumeratedMay 17, 2010
Last updated in NPPESMarch 19, 2021
Certification dateFebruary 24, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 2007 (19 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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