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

Gretchen Yahnke, LCSW

Individual provider Clinical Social Worker · NPI 1942443460

Gretchen Yahnke, LCSW is a Clinical Social Worker in Saint Louis, Missouri. Works from 2 locations. Licensed in Missouri and Ohio.

Licensed in
MO, OH
In the registry since
2009
Specialties on file
2
What do these letters mean?
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

1001 Lynch St
Saint Louis, MO 63118-1818
Phone: (314) 535-5600
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Additional practice locations (1)

  • 1780 Old Highway 50 E, Union, MO 63084-3219 — (636) 582-8100

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 2015035971 (MO)
Clinical Social Worker Taxonomy 1041C0700X · Licence I.00100008-SUPV (OH)

Record details

NPI number1942443460
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW
Sole proprietorNo
NPI enumeratedApril 14, 2009
Last updated in NPPESJuly 28, 2026
Certification dateJuly 28, 2026

Other providers in Saint Louis