Individual provider Active NPI

Allison Zimmerman

  • Advanced Heart Failure and Transplant Cardiology Physician
  • Milwaukee, WI
National Provider Identifier
1932690245
Registry record updated Aug 31, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Advanced Heart Failure and Transplant Cardiology PhysicianTaxonomy code 207RA0001X
License
85490 Issued in WI
Practice address
2900 W Oklahoma Ave
Milwaukee, WI 53215-4330
Phone
(414) 646-2438
NPI assigned
May 22, 2018
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Aug 31, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Advanced Heart Failure and Transplant Cardiology Physician 207RA0001X 85490 WI Primary
Internal Medicine Physician 207R00000X 125.072044 IL
Internal Medicine Physician 207R00000X 85490 WI

Addresses

Primary practice location

2900 W Oklahoma Ave
Milwaukee, WI 53215-4330

Mailing address

PO Box 735044
Chicago, IL 60673-5044
Phone (800) 326-2250

Other practice location 1

2799 W Grand Blvd
Detroit, MI 48202-2608
Phone (313) 916-1601

Other identifiers 1

IdentifierTypeStateIssuer
100367544MedicaidWI

Electronic endpoints 2

TypeEndpointUseAffiliation
Direct Messaging Address azimmerman433626@direct.myadvocateaurora.org Direct
FHIR URL https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in WI
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: No
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20250813001523 WI Practitioner - Internal Medicine 8022365618 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
University of Toledo College of Medicine, 2018
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Aurora Medical Group, Inc.Group PAC ID 6709794258, 3,764 clinicians
Aurora Advanced Healthcare, Inc.Group PAC ID 3375625833, 1,107 clinicians

Practice addresses (Care Compare)

2900 W Oklahoma Ave
Milwaukee, WI 53215-4330
Phone (414) 646-5410

975 Port Washington Rd
Suite 110
Grafton, WI 53024-9201
Phone (262) 329-8000

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
125.072044ILMDInternal Medicine Physician
85490WIMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Aurora Medical Group, Inc. Internal Medicine Current Accepting new patients
Aurora Medical Group, Inc. CurrentSince Jul 25, 2025 Accepting new patients
Aurora Advanced Healthcare, Inc. Internal Medicine CurrentSince Apr 1, 2026 Accepting new patients
Aurora Medical Group, Inc. CurrentSince Jul 25, 2025 Accepting new patients
Aurora Medical Group, Inc. Past Accepting new patients

Locations

975 Port Washington Rd
#110
Grafton, WI 53024
Phone (262) 329-8000

2900 W Oklahoma Ave
Milwaukee, WI 53215
Phone (414) 385-2590

1020 N 12th St
Milwaukee, WI 53233
Phone (414) 219-3056

2900 W Oklahoma Ave
Fl 4
Milwaukee, WI 53215
Phone (414) 646-2438

Interoperability endpoints

  • Direct secure messaging: azimmerman722476@direct.hfhs.org
  • Direct secure messaging: azimmerman433626@direct.myadvocateaurora.org

Organizations & group practices 5

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

Hospital & facility affiliations 5

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1526947200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1788134400000",
    "number": "1932690245",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 735044",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606735044",
            "telephone_number": "800-326-2250"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2900 W OKLAHOMA AVE",
            "city": "MILWAUKEE",
            "state": "WI",
            "postal_code": "532154330",
            "telephone_number": "414-646-2438"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2799 W Grand Blvd",
            "address_purpose": "LOCATION",
            "city": "Detroit",
            "state": "MI",
            "postal_code": "482022608",
            "country_code": "US",
            "telephone_number": "313-916-1601",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "ZIMMERMAN",
        "first_name": "ALLISON",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2018-05-22",
        "last_updated": "2026-08-31",
        "certification_date": "2026-08-31",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RA0001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Advanced Heart Failure and Transplant Cardiology",
            "state": "WI",
            "license": "85490",
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IL",
            "license": "125.072044",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "WI",
            "license": "85490",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "100367544",
            "state": "WI"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "azimmerman433626@direct.myadvocateaurora.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "2900 W Oklahoma Ave",
            "city": "Milwaukee",
            "state": "WI",
            "country_code": "US",
            "postal_code": "532154330",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/",
            "affiliation": "N",
            "address_1": "2900 W Oklahoma Ave",
            "city": "Milwaukee",
            "state": "WI",
            "country_code": "US",
            "postal_code": "532154330",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Milwaukee, WI

Sources for this page

Verify at the official NPI Registry.