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

Donald R. Tjossem, MS, MAC, SAP, CDP

Individual provider Counselor · NPI 1649483009

Donald R. Tjossem, MS, MAC, SAP, CDP is a Counselor in Lakebay, Washington. Practices as a sole proprietor. Licensed in Washington.

Licensed in
WA
In the registry since
2007
Specialties on file
2
What do these letters mean?
MS — Master of Science
A graduate science degree.

See every abbreviation used in this directory →

Practice location Address checks out

8903 Key Peninsula Hwy N
Lakebay, WA 98349-9326
Phone: (253) 884-4860
Fax: (253) 830-0174
Show map & directions

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

Specialties & licences

Counselor (primary) Taxonomy 101Y00000X · Licence RC00039575 (WA)
Addiction (Substance Use Disorder) Counselor Taxonomy 101YA0400X · Licence CPOOOO4019 (WA)

Record details

NPI number1649483009
Entity typeIndividual (Type 1)
GenderMale
Credentials MS , MAC , SAP , CDP
Sole proprietorYes
NPI enumeratedMay 8, 2007
Last updated in NPPESSeptember 11, 2025