1. Home
  2. Directory
  3. Missouri
  4. Saint Louis
  5. Social Worker
  6. NPI Profile

GRETCHEN YAHNKE LCSW
NPI 1942443460
Social Worker - Clinical in Saint Louis, MO

Active since April 14, 2009PECOS Enrolled
1001 LYNCH ST, SAINT LOUIS, MO 63118(314) 535-5600 Get Directions Write a Review

NPPES record last updated: July 28, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 28, 2026, Apr 20, 2026 (2 updates tracked since 2026).

About Gretchen Yahnke Lcsw NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GRETCHEN YAHNKE LCSW (NPI 1942443460) is an individual clinical provider in Saint Louis, Missouri, licensed in Missouri (2015035971) and active in the NPI registry since April 2009. She is enrolled in Medicare PECOS and maintains a secondary practice location in Union.

NPPES Registry Identity

NPI1942443460
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameGRETCHEN YAHNKECredential: LCSW
Location Address1001 LYNCH STSaint Louis, MO 63118-1818
Mailing AddressPo Box 844715Kansas City, MO 64184-4715 · (417) 761-5000
Phone(314) 535-5600
Sole ProprietorNo
Enumeration DateApril 14, 2009
Last NPPES UpdateJuly 28, 20262 updates tracked since enumeration
NPPES CertifiedJuly 28, 2026
✔ NPI 1942443460 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
Licenses✔ Licensed in MO · 2015035971✔ Licensed in OH · I.00100008-SUPV
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
1001 LYNCH ST, Saint Louis, MO 63118
Open in Google Maps ↗

Secondary Practice Location 1

Location 11780 Old Highway 50 EUnion, MO 63084-3219 · Phone (636) 582-8100

Other Identifiers 1

OtherI.0010008-SUPVOH · Lisw

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Medica, Oscar Insurance Company and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Gretchen Yahnke Lcsw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

3

Medicare enrollment records show Gretchen Yahnke reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Places For People, Inc.
Same address
Adult Mental Health
1001 LYNCH ST
Saint Louis, MO 63118
  • Reassigned Medicare billing, Missouri enrollment
  • 69 clinicians in this Medicare group
NPI 1073637377 (314) 535-5600
Compass Health, Inc.
36 mi
Federally Qualified Health Center (FQHC)
1032 CROSSWINDS CT
Wentzville, MO 63385
  • Reassigned Medicare billing, Missouri enrollment
  • 968 clinicians in this Medicare group
NPI 1861618308 (636) 332-8310
Burrell, Inc.
195 mi
Community/Behavioral Health
1300 E BRADFORD PKWY
Springfield, MO 65804
  • Reassigned Medicare billing, Missouri enrollment
  • 590 clinicians in this Medicare group
NPI 1275541740 (417) 761-5000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 63118 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$0.00 typical visit price
range $55.65 – $169.38
Typical copayment $0.00 (range $13.91 – $42.34)
Most-billed visit code NA
Established Patient
$69.50 typical visit price
range $17.76 – $137.92
Typical copayment $17.37 (range $4.44 – $34.48)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

FAMILY CARE HEALTH CENTERS
Clinic/Center (Federally Qualified Health Center (FQHC))
1001 LYNCH ST
SAINT LOUIS, MO 63118
St. Louis City (314) 531-5444
ELISHA CHANTILLY LINNEN-GLASS LPC
Counselor (Professional)
1001 LYNCH ST
SAINT LOUIS, MO 63118
St. Louis City (314) 535-5600
SAMANTHA N BIGHAM OT
Occupational Therapist
1001 LYNCH ST
SAINT LOUIS, MO 63118
St. Louis City (314) 535-5600
SHARON K BROWNE FPMHNP
Nurse Practitioner (Psychiatric/Mental Health)
1001 LYNCH ST
SAINT LOUIS, MO 63118
St. Louis City (314) 535-5600
AMY LYNN HENNESSY OT
Occupational Therapist
1001 LYNCH ST
SAINT LOUIS, MO 63118
St. Louis City (314) 535-5600
TIARE SADARANANDA OTR/L
Occupational Therapist
1001 LYNCH ST
SAINT LOUIS, MO 63118
St. Louis City (314) 535-5600
GRANT N UNDERHILL LCSW
Social Worker (Clinical)
1001 LYNCH ST
SAINT LOUIS, MO 63118
St. Louis City (314) 535-5600
JUSTIN THOMAS UFHEIL LCSW
Social Worker (Clinical)
1001 LYNCH ST
SAINT LOUIS, MO 63118
St. Louis City (315) 535-5600

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gretchen Yahnke's NPI number?

The NPI number for Gretchen Yahnke is 1942443460. It was assigned to this individual provider in the NPPES registry on April 14, 2009.

Where is Gretchen Yahnke located?

Gretchen Yahnke practices at 1001 Lynch St, Saint Louis, MO 63118. The listed phone number is (314) 535-5600.

What is Gretchen Yahnke's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Is Gretchen Yahnke enrolled in Medicare?

Yes. Gretchen Yahnke is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Gretchen Yahnke's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gretchen Yahnke reassigns Medicare benefits to 3 organizations: Places For People, Inc. (Saint Louis, MO), Compass Health, Inc. (Wentzville, MO) and Burrell, Inc. (Springfield, MO). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Gretchen Yahnke's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gretchen Yahnke accept?

Health plans from Anthem Blue Cross and Blue Shield, Medica, Oscar Insurance Company and UnitedHealthcare list Gretchen Yahnke as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Gretchen Yahnke was last updated on July 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.