MR. GREGORY A. ALEFF LCSW
NPI 1942245592
Social Worker - Clinical in Appleton, WI
About Mr. Gregory A. Aleff Lcsw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. GREGORY A. ALEFF LCSW (NPI 1942245592) is an individual clinical provider in Appleton, Wisconsin, licensed in Wisconsin (962-123) and active in the NPI registry since June 2006.
NPPES Registry Identity
Specialties & Licenses
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.
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 Gregory Aleff's NPI number?
The NPI number for Gregory Aleff is 1942245592. It was assigned to this individual provider in the NPPES registry on June 18, 2006.
Where is Gregory Aleff located?
Gregory Aleff practices at 10 Tri Park Way, Appleton, WI 54914. The listed phone number is (920) 831-7909.
What is Gregory Aleff's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
When was this NPI record last updated?
The NPPES record for Gregory Aleff was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 41 days 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.