Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Horizon Healthcare, Inc

Multi-Specialty Clinic/Center in Milwaukee, WI · enumerated 2006 · authorized official Rebbecca Zillmer, Manager.

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

National Provider Identifier

1225052830

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Registry record

Entity type Organization (Type 2)

Legal business name Horizon Healthcare, Inc

Practice address 4650 S Howell Ave, Milwaukee, WI, 53207

Phone (414) 376-5577

Fax (414) 762-9927

Enumeration date Jul 27, 2006

Last updated in NPPES Aug 11, 2023

Taxonomy & classification

261QM0801X Mental Health Clinic/Center (Including Community Mental Health Center) Ambulatory Health Care Facilities Secondary

261QM1300X Multi-Specialty Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name Rebbecca Zillmer

Title Manager

Phone (414) 301-6384

Other identifiers

Identifier	Type	State	Issuer
100030905	Medicaid	WI	-
100031478	Medicaid	WI	-
42215200	Medicaid	WI	-

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

Where is Horizon Healthcare, Inc located?

The practice location on file with NPPES is in Milwaukee, WI.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2023-08-11. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-11.