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

Katherine Louise Nelson-Armstrong, LMFT

Individual provider Marriage & Family Therapist · NPI 1396265138

Katherine Louise Nelson-Armstrong, LMFT is a Marriage and Family Therapist in Portland, Oregon. Qualified in 2018, 8 years ago. Practices as a sole proprietor. Licensed in Oregon and Washington.

Years since qualifying
8
Licensed in
OR, WA
In the registry since
2017
Specialties on file
3
What do these letters mean?
LMFT — Licensed Marriage and Family Therapist
A therapist licensed to treat couples and families.

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Practice location Address checks out

818 NW 17th Ave Ste 8
Portland, OR 97209-2327
Phone: (503) 583-7434
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Marriage & Family Therapist (primary) Taxonomy 106H00000X · Licence T2423 (OR)
Addiction (Substance Use Disorder) Counselor Taxonomy 101YA0400X · Licence CP60168467 (WA)
Addiction (Substance Use Disorder) Counselor Taxonomy 101YA0400X · Licence 14-R-23 (OR)

Record details

NPI number1396265138
Entity typeIndividual (Type 1)
GenderFemale
Credentials LMFT
Sole proprietorYes
NPI enumeratedJune 22, 2017
Last updated in NPPESDecember 1, 2023
Certification dateDecember 16, 2022

Medicare enrollment

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

Medicare specialtyMARRIAGE AND FAMILY THERAPIST
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Accepts Medicare assignment Not indicated

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