Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Gregory J Koehler, LCSW
Social Worker in Middleton, WI · enumerated 2021.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1417520750
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Gregory J Koehler
Credential LCSW
Sex Male
Practice address 6629 University Ave Ste 209, Middleton, WI, 53562
Phone (608) 833-5880
Fax (608) 829-3787
Enumeration date Jul 23, 2021
Last updated in NPPES Jul 23, 2021
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License 880-123 (WI) Primary
LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy.
About the LCSW 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.
Frequently asked questions
What is the NPI number for Gregory Koehler?
The National Provider Identifier (NPI) for Gregory Koehler is 1417520750, a Type 1 (individual) record in the CMS NPPES registry.
Where does Gregory Koehler practice?
The practice location on file with NPPES is in Middleton, WI. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-07-23.