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

Gillian Sleeman, MA, LMFT

Individual provider Marriage & Family Therapist · NPI 1740509017

Gillian Sleeman, MA, LMFT is a Marriage & Family Therapist in Lake Oswego, Oregon. Practices as a sole proprietor. Registered with an NPI since 2010.

In the registry since
2010
What do these letters mean?
MA — Master of Arts
A graduate arts degree.
LMFT — Licensed Marriage and Family Therapist
A therapist licensed to treat couples and families.

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Practice location Address checks out

470 2nd St
Lake Oswego, OR 97034-3199
Phone: (503) 234-9591
Show map & directions

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

Specialties & licences

Marriage & Family Therapist (primary) Taxonomy 106H00000X

Record details

NPI number1740509017
Entity typeIndividual (Type 1)
GenderFemale
Credentials MA , LMFT
Sole proprietorYes
NPI enumeratedMay 25, 2010
Last updated in NPPESOctober 25, 2023
Certification dateOctober 25, 2023
Mailing address960 Capilano Ct, Lake Oswego, OR 97034-1643

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