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

Dr. Sonja Linn, PHD

Individual provider Counseling Psychologist · NPI 1477722973

Dr. Sonja Linn, PHD is a Counseling Psychologist in Washington, District of Columbia. Practices as a sole proprietor. Licensed in District of Columbia.

Licensed in
DC
In the registry since
2008
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

2440 M St NW Ste 411
Washington, DC 20037-1404
Phone: (202) 887-8088
Fax: (202) 887-8999
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Counseling Psychologist (primary) Taxonomy 103TC1900X · Licence PSY1000207 (DC)

Record details

NPI number1477722973
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorYes
NPI enumeratedFebruary 28, 2008
Last updated in NPPESFebruary 28, 2008

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