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HORIZON HEALTHCARE, INC
NPI 1225052830
Clinic/Center - Multi-Specialty in Milwaukee, WI

Active since July 27, 2006CLIA Certified · 5 labs
4650 S HOWELL AVE, MILWAUKEE, WI 53207(414) 376-5577(414) 762-9927 Get Directions Write a Review

NPPES record last updated: August 11, 2023. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Aug 11, 2023, Mar 25, 2020 (2 updates tracked since 2020).

About Horizon Healthcare, Inc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

HORIZON HEALTHCARE, INC (NPI 1225052830) is a healthcare organization registered as a multi-specialty in Milwaukee, Wisconsin and active in the NPI registry since July 2006. The organization holds 5 active CLIA laboratory certificates, maintains 8 additional practice locations, and lists Rebbecca Zillmer, Manager, as its authorized official.

NPPES Registry Identity

NPI1225052830
Entity TypeOrganization
Primary Taxonomy261QM1300X
Legal Business NameHORIZON HEALTHCARE, INC
Location Address4650 S HOWELL AVEMilwaukee, WI 53207-5908
Mailing Address217 Wisconsin Ave Ste 204Waukesha, WI 53186-4946 · (414) 301-6384
Phone(414) 376-5577
Fax(414) 762-9927
Organization SubpartNo
Authorized OfficialRebbecca ZillmerManager · (414) 301-6384
Enumeration DateJuly 27, 2006
Last NPPES UpdateAugust 11, 20232 updates tracked since enumeration
NPPES CertifiedAugust 11, 2023
✔ NPI 1225052830 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyClinic/Center · Multi-SpecialtyAmbulatory Health Care Facilities
Taxonomy Code261QM1300X
Also ListedClinic/Center · Mental Health (Including Community Mental Health Center)Taxonomy 261QM0801X
4650 S HOWELL AVE, Milwaukee, WI 53207
Open in Google Maps ↗

Secondary Practice Locations 8

Location 15555 N 51st StMilwaukee, WI 53218-3308 · Phone (414) 376-5577 · Fax (414) 762-9927
Location 2835 Wisconsin AveRacine, WI 53403-1505 · Phone (414) 376-5577 · Fax (414) 762-9927
Location 32819 W Highland BlvdMilwaukee, WI 53208-3217 · Phone (414) 376-5577 · Fax (414) 762-9927
Location 45408 W Burleigh StMilwaukee, WI 53210-1624 · Phone (414) 376-5577 · Fax (414) 762-9277
Location 52835 N 32nd StMilwaukee, WI 53210-1915 · Phone (414) 376-5577 · Fax (414) 762-9927
Location 6741 N Grand Ave Ste 200Waukesha, WI 53186-4841 · Phone (414) 376-5577 · Fax (414) 762-9927
Location 73410 80th StKenosha, WI 53142-4975 · Phone (414) 376-5577 · Fax (414) 762-9927
Location 85005 W Howard AveMilwaukee, WI 53220-2025 · Phone (414) 376-5577 · Fax (414) 762-9927

Other Identifiers 3

Medicaid100030905WI
Medicaid100031478WI
Medicaid42215200WI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

CLIA Laboratory Certificates CMS CLIA 5

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 52D2178085

Horizon Healthcare, Inc · Milwaukee, WI
Active · expires Jan 26, 2028
CLIA Number52D2178085
Laboratory TypePhysician Office
Certificate Effective DateJanuary 27, 2026
Certificate Expiration DateJanuary 26, 2028
Laboratory DirectorDr. Ronald Rubin
Laboratory Phone(414) 939-8735
Laboratory LocationHorizon Healthcare, Inc2819 W Highland Blvd, Milwaukee, WI 53208
CLIA data matches this NPI record on: Address Name
This certificate is issued to a laboratory to perform only waived tests.

Certificate of Accreditation 52D2096656

Horizon Healthcare, Inc · Milwaukee, WI
Active · expires Jan 1, 2028
CLIA Number52D2096656
Laboratory TypeIndependent
Certificate Effective DateJanuary 2, 2026
Certificate Expiration DateJanuary 1, 2028
Laboratory DirectorMr. James F. Wick
Laboratory Phone(414) 376-5527
Laboratory LocationHorizon Healthcare, Inc4650 S Howell Ave, Milwaukee, WI 53207
CLIA data matches this NPI record on: Address Name
This is a certificate that is issued to a laboratory on the basis of the laboratory's accreditation by an accreditation organization approved by CMS.

Certificate of Waiver 52D2100831

Horizon Healthcare, Inc · Milwaukee, WI
Active · expires Aug 23, 2027
CLIA Number52D2100831
Laboratory TypePhysician Office
Certificate Effective DateAugust 24, 2025
Certificate Expiration DateAugust 23, 2027
Laboratory DirectorDr. Thomas Holbrook
Laboratory Phone(414) 841-2972
Laboratory LocationHorizon Healthcare, Inc5408 W Burleigh St, Milwaukee, WI 53210
CLIA data matches this NPI record on: Address Name
This certificate is issued to a laboratory to perform only waived tests.

Certificate of Waiver 52D2127026

Horizon Healthcare, Inc · Racine, WI
Active · expires Mar 7, 2027
CLIA Number52D2127026
Laboratory TypePhysician Office
Certificate Effective DateMarch 8, 2025
Certificate Expiration DateMarch 7, 2027
Laboratory DirectorDr. Thomas Holbrook
Laboratory Phone(414) 841-2972
Laboratory LocationHorizon Healthcare, Inc835 Wisconsin Ave, Racine, WI 53403
CLIA data matches this NPI record on: Address Name
This certificate is issued to a laboratory to perform only waived tests.

Certificate of Waiver 52D2099263

Horizon Healthcare, Inc · Kenosha, WI
Active · expires Jul 22, 2027
CLIA Number52D2099263
Laboratory TypePhysician Office
Certificate Effective DateJuly 23, 2025
Certificate Expiration DateJuly 22, 2027
Laboratory DirectorDr. Thomas Holbrook
Laboratory Phone(414) 841-2972
Laboratory LocationHorizon Healthcare, Inc3410 80th Avenue, Kenosha, WI 53142
CLIA data matches this NPI record on: Name
This certificate is issued to a laboratory to perform only waived tests.

Other Providers at the Same Location NPPES 9

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MARK C BENDER P.A.
Physician Assistant
4650 S HOWELL AVE
MILWAUKEE, WI 53207
Milwaukee County (414) 376-5577
AMERICAN TELEPSYCHIATRY, INC.
General Practice
4650 S HOWELL AVE
MILWAUKEE, WI 53207
Milwaukee County (414) 301-6381
MELINDA A BLAKE APSW
Social Worker (Clinical)
4650 S HOWELL AVE
MILWAUKEE, WI 53207
Milwaukee County (414) 376-5577
REBECCA K SIKES-GREENWOOD CSAC
Counselor (Addiction (Substance Use Disorder))
4650 S HOWELL AVE
MILWAUKEE, WI 53207
Milwaukee County (414) 376-5577
DENISE M HARRIS PC
Counselor (Professional)
4650 S HOWELL AVE
MILWAUKEE, WI 53207
Milwaukee County (414) 376-5577
NAMAZII U BROOKS
Social Worker (Clinical)
4650 S HOWELL AVE
MILWAUKEE, WI 53207
Milwaukee County (414) 376-5577
KIMBERLY RAKHA APNP
Nurse Practitioner (Family)
4650 S HOWELL AVE
MILWAUKEE, WI 53207
Milwaukee County (414) 376-5577
REBECCA RAHN PC
Counselor (Professional)
4650 S HOWELL AVE
MILWAUKEE, WI 53207
Milwaukee County (414) 376-5577

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 Horizon Healthcare, Inc's NPI number?

The NPI number for Horizon Healthcare, Inc is 1225052830. It was assigned to this organization in the NPPES registry on July 27, 2006.

Where is Horizon Healthcare, Inc located?

Horizon Healthcare, Inc is located at 4650 S Howell Ave, Milwaukee, WI 53207. The listed phone number is (414) 376-5577.

What is Horizon Healthcare, Inc's specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Multi-Specialty, with taxonomy code 261QM1300X.

Does Horizon Healthcare, Inc hold CLIA laboratory certificates?

Yes. 5 active CLIA laboratory certificates are associated with this NPI under the federal Clinical Laboratory Improvement Amendments program. The certificates are listed in the CLIA Laboratory Certificates section above.

What insurance does Horizon Healthcare, Inc accept?

Health plans from Anthem Blue Cross and Blue Shield list Horizon Healthcare, Inc as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Horizon Healthcare, Inc was last updated on August 11, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.