Individual provider Active NPI

Bradley Joseph Maerz, MD

  • Emergency Medicine Physician
  • Milwaukee, WI
National Provider Identifier
1780264580
Registry record updated Nov 4, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Emergency Medicine PhysicianTaxonomy code 207P00000X
License
81885-20 Issued in WI
Practice address
2900 W Oklahoma Ave
Milwaukee, WI 53215-4330
Phone
(414) 649-7299
NPI assigned
Apr 14, 2021
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Nov 4, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Emergency Medicine Physician 207P00000X 81885-20 WI Primary

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

8701 W Watertown Plank Rd
Milwaukee, WI 53226-3548
Phone (414) 955-6450

Other identifiers 1

IdentifierTypeStateIssuer
100223114MedicaidWI

Electronic endpoints 2

TypeEndpointUseAffiliation
Direct Messaging Address bjoseph219371@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: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20240520002930 WI Practitioner - Emergency Medicine 2163829102 Reassigns benefits to 4 organizations

Care Compare profile

Medicare Care Compare
Specialty
Emergency Medicine
Education
University of Wisconsin School of Medicine, 2021
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Lakeshore Medical Clinic LLCGroup PAC ID 7719890730, 375 clinicians
Ermed, SCGroup PAC ID 5092608554, 45 clinicians
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)

200 E Ryan Rd
Oak Creek, WI 53154-4563
Phone (414) 570-3590

2900 W Oklahoma Ave
Milwaukee, WI 53215-4330
Phone (414) 649-6588

3003 University Dr
Marinette, WI 54143-4110
Phone (715) 735-6621

3003 W Good Hope Rd
Milwaukee, WI 53209-2042
Phone (414) 352-3100

Hospital & facility affiliations

  • Aurora St Lukes Medical Center Hospital, Milwaukee, WI, CCN 520138
  • West Allis Memorial Hospital Hospital, West Allis, WI, CCN 520139
  • Aurora Medical Center Bay Area Hospital, Marinette, WI, CCN 520113

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Aurora Medical Group, Inc. CurrentSince Oct 1, 2025 Accepting new patients
Aurora Medical Group, Inc. CurrentSince Oct 1, 2025 Accepting new patients
Milwaukee Radiologists LTD Current Accepting new patients
Aurora Advanced Healthcare Inc CurrentSince Oct 1, 2025 Accepting new patients
Ermed, SC Emergency Medicine CurrentSince Jul 1, 2024 Accepting new patients
Lakeshore Medical Clinic, LLC CurrentSince Oct 1, 2025 Accepting new patients
Aurora Advanced Healthcare, Inc. CurrentSince Oct 1, 2025 Accepting new patients

Locations

5900 S Lake Dr
Cudahy, WI 53110
Phone (414) 489-4055

3003 W Good Hope Rd
Glendale, WI 53209
Phone (414) 352-3100

3003 University Dr
Marinette, WI 54143
Phone (715) 735-4200

12203 N Corporate Pkwy
Mequon, WI 53092
Phone (262) 387-8200

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

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

S74W16775 Janesville Rd
Muskego, WI 53150
Phone (414) 422-4747

200 E Ryan Rd
Oak Creek, WI 53154
Phone (414) 570-3590

2000 E Layton Ave
St Francis, WI 53235
Phone (414) 744-7880

Interoperability endpoints

  • Direct secure messaging: bjoseph219371@direct.myadvocateaurora.org

Organizations & group practices 7

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 7

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": "1618358400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1762214400000",
    "number": "1780264580",
    "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": "414-649-7299"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "8701 W Watertown Plank Rd",
            "address_purpose": "LOCATION",
            "city": "Milwaukee",
            "state": "WI",
            "postal_code": "532263548",
            "country_code": "US",
            "telephone_number": "414-955-6450",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MAERZ",
        "first_name": "BRADLEY",
        "middle_name": "JOSEPH",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2021-04-14",
        "last_updated": "2025-11-04",
        "certification_date": "2025-11-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "WI",
            "license": "81885-20",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "100223114",
            "state": "WI"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "bjoseph219371@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.