Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.

Duncan Patrick O'Mahony, PSYCHOLOGIST

Individual provider Mental Health Counselor · NPI 1821963869

Duncan Patrick O'Mahony, PSYCHOLOGIST is a Mental Health Counselor in Issaquah, Washington. Practices as a sole proprietor. Licensed in Washington.

Licensed in
WA
In the registry since
2025
Specialties on file
2

Practice location Address checks out

195 NE Gilman Blvd Ste 100
Issaquah, WA 98027-2940
Phone: (425) 295-7697
Show map & directions

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

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence PSYA.PG.7O165412 (WA)
Mental Health Counselor Taxonomy 101YM0800X · Licence MHCLH61523993 (WA)

Record details

NPI number1821963869
Entity typeIndividual (Type 1)
GenderMale
Credentials PSYCHOLOGIST
Sole proprietorYes
NPI enumeratedOctober 8, 2025
Last updated in NPPESSeptember 9, 2026
Certification dateSeptember 9, 2026

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