Gretchen Yahnke, LCSW
NPI 1942443460 · Clinical Social Worker · Union, MO
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gretchen Yahnke, LCSW is a Clinical Social Worker provider in Union, MO (NPI 1942443460).
Provider details
- NPI number
- 1942443460
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- No
- License
- 2015035971 (MO)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (1)
- 1001 Lynch StSaint Louis, MO 63118-1818Phone: (314) 535-5600
Registry dates
- Enumerated
- 2009-04-14
- Last updated
- 2026-04-20
- Certified
- 2026-04-20
Frequently asked questions
- What is Gretchen Yahnke's NPI number?
- Gretchen Yahnke's National Provider Identifier (NPI) is 1942443460, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gretchen Yahnke's specialty?
- Gretchen Yahnke is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Gretchen Yahnke located?
- Gretchen Yahnke's practice location on file with NPPES is 1780 Old Highway 50 E, Union, MO 63084-3397.
- What is Gretchen Yahnke's phone number?
- The practice phone number listed in the NPPES registry for Gretchen Yahnke is (636) 582-8100.
- Does Gretchen Yahnke accept Medicare?
- Gretchen Yahnke is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gretchen Yahnke's NPI active?
- Yes — Gretchen Yahnke's NPI (1942443460) is active in the NPPES registry as of the last update on 2026-04-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.