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

Dr. Donald O Tessmer, PSYD

Individual provider Psychologist · NPI 1740400530

Dr. Donald O Tessmer, PSYD is a Psychologist in Los Angeles, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2007
Specialties on file
2
What do these letters mean?
PSYD — Doctor of Psychology
A doctoral psychologist trained primarily for clinical practice.

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Practice location Address checks out

10436 Santa Monica Blvd 3005
Los Angeles, CA 90025-6933
Phone: (310) 393-2626
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

School Psychologist (primary) Taxonomy 103TS0200X · Licence LEP 1817 (CA)
Psychologist Taxonomy 103T00000X · Licence LEP (CA)

Record details

NPI number1740400530
Entity typeIndividual (Type 1)
GenderMale
Credentials PSYD
Sole proprietorYes
NPI enumeratedApril 26, 2007
Last updated in NPPESSeptember 11, 2025

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