Gregory A. Aleff, LCSW

Clinical Social Worker · Appleton, WI

Individual Active NPI

NPI number 1942245592

Practice location

10 Tri Park Way
Appleton, WI 54914-1658
Phone
(920) 831-7909

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NPI record

NPI
1942245592
Entity type
Individual (Type 1)
Enumeration date
June 18, 2006
Last updated
July 13, 2026
Sole proprietor
No

Specialties & taxonomy codes

TaxonomyCodeLicenseState
Clinical Social Worker Primary 1041C0700X 962-123 WI

Mailing address

W6031 Blazing Star Dr
Appleton, WI 54915-7422
Phone
(920) 731-0988

About Gregory Aleff

Gregory A. Aleff, LCSW is a healthcare provider registered in the NPI registry with the primary taxonomy Clinical Social Worker (code 1041C0700X). The practice location is 10 Tri Park Way, Appleton, WI 54914-1658. The NPI number 1942245592 was assigned on June 18, 2006 and the record was last updated on July 13, 2026.

Gregory Aleff lists a license in the registry: #962-123 (WI) for Clinical Social Worker. License numbers are self-reported to NPPES; verify them with the state licensing board.

Frequently asked questions

What is the NPI number of Gregory A. Aleff, LCSW?

The NPI number is 1942245592.

What is the phone number of Gregory Aleff?

The phone number listed for the practice location is (920) 831-7909.

Where is Gregory Aleff located?

10 Tri Park Way, Appleton, WI 54914-1658.

What is the taxonomy code for Gregory Aleff?

The primary taxonomy code is 1041C0700X – Clinical Social Worker.

Is this information correct?

All details come from the public NPPES registry. Providers can update their record at nppes.cms.hhs.gov; changes appear here after the next weekly update.

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