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

MS. Cynthia S Mack-Ernsdorff, LMHC, LMFT, CDP, HP

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1952624942

MS. Cynthia S Mack-Ernsdorff, LMHC, LMFT, CDP, HP is an Addiction (Substance Use Disorder) Counselor in Sammamish, Washington. Practices as a sole proprietor. Licensed in Washington.

Licensed in
WA
In the registry since
2010
Specialties on file
3
What do these letters mean?
LMHC — Licensed Mental Health Counselor
A licensed mental health counsellor; the title used in Florida, New York and Washington among others.
LMFT — Licensed Marriage and Family Therapist
A therapist licensed to treat couples and families.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

1827 218th Pl NE
Sammamish, WA 98074-4112
Phone: (425) 788-1710
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Marriage & Family Therapist (primary) Taxonomy 106H00000X · Licence LF00002676 (WA)
Addiction (Substance Use Disorder) Counselor Taxonomy 101YA0400X · Licence CP00006138 (WA)
Mental Health Counselor Taxonomy 101YM0800X · Licence LH00009947 (WA)

Record details

NPI number1952624942
Entity typeIndividual (Type 1)
GenderFemale
Credentials LMHC , LMFT , CDP , HP
Sole proprietorYes
NPI enumeratedMarch 5, 2010
Last updated in NPPESMarch 5, 2010

Other providers in Sammamish