Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ms. Gretchen Olene Koch, LPC

Professional Counselor in Oshkosh, WI · enumerated 2007.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1699824300

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Registry record

Entity type Individual (Type 1)

Name Ms. Gretchen Olene Koch

Credential LPC

Sex Female

Practice address Oshkosh, WI, 54902

Phone (920) 819-8943

Fax (888) 778-9931

Enumeration date Jan 10, 2007

Last updated in NPPES May 4, 2023

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

101YP2500X Professional Counselor Behavioral Health & Social Service Providers Secondary

101YP2500X Professional Counselor Behavioral Health & Social Service Providers · License 3186-125 (WI) Primary

LPC · Licensed Professional Counselor: A licensed mental-health counselor providing psychotherapy. About the LPC credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Gretchen Koch?

The National Provider Identifier (NPI) for Gretchen Koch is 1699824300, a Type 1 (individual) record in the CMS NPPES registry.

Where does Gretchen Koch practice?

The practice location on file with NPPES is in Oshkosh, WI. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-05-04.