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

MS. Margaret Marmaduke Breitenstein, MA

Individual provider Mental Health Counselor · NPI 1356354989

MS. Margaret Marmaduke Breitenstein, MA is a Mental Health Counselor in Beaverton, Oregon. Licensed in Oregon. Registered with an NPI since 2006.

Licensed in
OR
In the registry since
2006
What do these letters mean?
MA — Master of Arts
A graduate arts degree.

See every abbreviation used in this directory →

Practice location Address checks out

4855 SW Western Ave
Beaverton, OR 97005-3460
Phone: (503) 643-7565
Show map & directions

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

Specialties & licences

Mental Health Counselor (primary) Taxonomy 101YM0800X · Licence C0991 (OR)

Record details

NPI number1356354989
Entity typeIndividual (Type 1)
GenderFemale
Credentials MA
Sole proprietorNo
NPI enumeratedAugust 14, 2006
Last updated in NPPESJuly 8, 2007

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