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

Andrew Joseph Diffenderfer, BSPSYCHOLOGY

Individual provider Mental Health Counselor · NPI 1073949608

Andrew Joseph Diffenderfer, BSPSYCHOLOGY is a Mental Health Counselor in Eugene, Oregon. Practices as a sole proprietor. Registered with an NPI since 2013.

In the registry since
2013

Practice location Address checks out

499 W 4th Ave
Eugene, OR 97401-2505
Phone: (541) 686-1262
Show map & directions

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

Specialties & licences

Mental Health Counselor (primary) Taxonomy 101YM0800X

Record details

NPI number1073949608
Entity typeIndividual (Type 1)
GenderMale
Credentials BSPSYCHOLOGY
Sole proprietorYes
NPI enumeratedSeptember 14, 2013
Last updated in NPPESSeptember 14, 2013

Other providers in Eugene