Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Tammy Giannopoulos, LLC

Organization Mental Health Clinic/Center (Including Community Mental Health Center) · NPI 1295139012

Tammy Giannopoulos, LLC is a Mental Health Clinic/Center (Including Community Mental Health Center) in Greenfield, Wisconsin. Licensed in Wisconsin. Registered with an NPI since 2014.

Licensed in
WI
In the registry since
2014
What do these letters mean?
LLC — Limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

4402 S 68th St Ste 100
Greenfield, WI 53220
Phone: (414) 331-8167
Fax: (414) 321-0552
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Mental Health Clinic/Center (Including Community Mental Health Center) (primary) Taxonomy 261QM0801X · Licence 7779-123 (WI)

Record details

NPI number1295139012
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Tammy Giannopoulos — Psychotherapist · (414) 331-8167
NPI enumeratedOctober 22, 2014
Last updated in NPPESOctober 22, 2014
Mailing address4402 S 68th St Suite 100, Greenfield, WI 53220

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