Individual provider Active NPI

Matthew William Weber, MD

  • Hematology & Oncology Physician
  • Milwaukee, WI
National Provider Identifier
1104323567
Registry record updated Feb 18, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Hematology & Oncology PhysicianTaxonomy code 207RH0003X
License
74231 Issued in WI
Practice address
2900 W Oklahoma Ave
Milwaukee, WI 53215-4330
Phone
(833) 528-7672
NPI assigned
Apr 11, 2018
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Feb 18, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Hematology & Oncology Physician 207RH0003X 74231 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 identifiers 1

IdentifierTypeStateIssuer
100125223MedicaidWI

Electronic endpoints 2

TypeEndpointUseAffiliation
FHIR URL https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/
Direct Messaging Address mweber434910@direct.myadvocateaurora.org Direct

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
I20210609001800 WI Practitioner - Hematology/OncologyPractitioner - Internal Medicine 7517367709 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Hematology/Oncology
Education
Medical College of Wisconsin, 2018
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Aurora Advanced Healthcare, Inc.Group PAC ID 3375625833, 1,107 clinicians
Aurora Health Care Metro, Inc.Group PAC ID 8628986536, 75 clinicians

Practice addresses (Care Compare)

2900 W Oklahoma Ave
Milwaukee, WI 53215-4330
Phone (414) 649-6000

Hospital & facility affiliations

  • Aurora St Lukes Medical Center Hospital, Milwaukee, WI, CCN 520138
  • West Allis Memorial Hospital Hospital, West Allis, WI, CCN 520139
  • Aurora Memorial Hospital Burlington Hospital, Burlington, WI, CCN 520059

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Aurora Health Care Metro, Inc. Hematology & Oncology CurrentSince Aug 8, 2025 Accepting new patients
Aurora Advanced Healthcare Inc CurrentSince Aug 8, 2025 Accepting new patients
Aurora Advanced Healthcare, Inc. CurrentSince Aug 8, 2025 Accepting new patients
The Medical College of Wisconsin, Inc. CurrentSince Jul 1, 2021 Accepting new patients

Locations

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

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

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

9200 W Wisconsin Ave
Wauwatosa, WI 53226
Phone (414) 259-3000

8701 Watertown Plank Rd
Wauwatosa, WI 53226
Phone (414) 456-4100

Interoperability endpoints

  • Direct secure messaging: mwebermd253084@direct.froedtert.com
  • Direct secure messaging: mweber434910@direct.myadvocateaurora.org

Organizations & group practices 4

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": "1523404800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1771372800000",
    "number": "1104323567",
    "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": "833-528-7672"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WEBER",
        "first_name": "MATTHEW",
        "middle_name": "WILLIAM",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2018-04-11",
        "last_updated": "2026-02-18",
        "certification_date": "2026-02-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "WI",
            "license": "74231",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "100125223",
            "state": "WI"
        }
    ],
    "endpoints": [
        {
            "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"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "mweber434910@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"
        }
    ],
    "other_names": []
}

Other providers in Milwaukee, WI

Sources for this page

Verify at the official NPI Registry.