Individual provider Active NPI

Erich Nicholai Mussak

  • Diagnostic Radiology Physician
  • Milwaukee, WI
National Provider Identifier
1639343148
Registry record updated May 1, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Diagnostic Radiology PhysicianTaxonomy code 2085R0202X
License
57118 Issued in WI
Practice address
9200 W Wisconsin Ave
Department of Radiology
Milwaukee, WI 53226-3522
Phone
(414) 805-3750
Fax
(414) 259-9290
NPI assigned
Apr 15, 2008
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on May 1, 2026

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

Specialties & licenses 4

Specialty (taxonomy)CodeLicenseStatePrimary
Diagnostic Radiology Physician 2085R0202X 036-126655 IL
Diagnostic Radiology Physician 2085R0202X 2025-03105 NC
Diagnostic Radiology Physician 2085R0202X 57118 WI Primary
Diagnostic Radiology Physician 2085R0202X 79896 AZ

Addresses

Primary practice location

9200 W Wisconsin Ave
Department of Radiology
Milwaukee, WI 53226-3522

Mailing address

29373 Network PL
Chicago, IL 60673-1293
Phone (847) 390-5900

Other practice location 1

1814 Westchester Dr Ste 100
High Point, NC 27262-7369
Phone (336) 802-2397

Other practice location 2

601 N Elm St
High Point, NC 27262-4331
Phone (336) 878-6000

Other practice location 3

45 Tower Ct Ste C
Gurnee, IL 60031-3376
Phone (847) 623-3200

Other practice location 4

13677 W McDowell Rd
Goodyear, AZ 85395-2635
Phone (623) 882-1500

Other identifiers 1

IdentifierTypeStateIssuer
1639343148MedicaidWI

Electronic endpoints 4

TypeEndpointUseAffiliation
FHIR URL https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/
Direct Messaging Address emussak86828@direct.myadvocateaurora.org Direct
Direct Messaging Address emussak86828@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, IL, NC, AZ4 enrollments
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 4

Enrollment IDStateProvider typePAC IDDetails
I20120716000262 WI Practitioner - Diagnostic RadiologyPractitioner - Interventional Radiology 2264698471 Reassigns benefits to 3 organizations
I20230802003894 IL Practitioner - Diagnostic Radiology 2264698471 Reassigns benefits to 2 organizations
I20251120001790 NC Practitioner - Diagnostic Radiology 2264698471 Reassigns benefits to 2 organizations
I20260429003988 AZ Practitioner - Diagnostic Radiology 2264698471 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Diagnostic RadiologyAlso: Interventional Radiology
Education
Other, 2007
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Aurora Medical Group, Inc.Group PAC ID 6709794258, 3,764 clinicians
VHS Outpatient Clinics IncGroup PAC ID 4486566726, 206 clinicians
Lakeshore Medical Clinic LLCGroup PAC ID 7719890730, 375 clinicians
Aurora Advanced Healthcare, Inc.Group PAC ID 3375625833, 1,107 clinicians
Amg Illinois LTDGroup PAC ID 8527117027, 24 clinicians

Practice addresses (Care Compare)

1005 Spring City Dr
Waukesha, WI 53186-5934
Phone (262) 371-4040

1020 N 12TH St
Milwaukee, WI 53233-1308
Phone (414) 219-3056

1032 E Sumner St
Hartford, WI 53027-1608
Phone (262) 673-2300

10400 75TH St
Kenosha, WI 53142-7884
Phone (262) 948-7000

1136 Westowne Dr
Neenah, WI 54956-2175
Phone (920) 456-2030

120 Chapman Farms Blvd
Mukwonago, WI 53149-9337
Phone (262) 363-6160

12500 Aurora Dr
Pleasant Prairie, WI 53158-1227
Phone (262) 857-5000

13250 Washington Ave
Mount Pleasant, WI 53177-1516
Phone (262) 884-4000

13677 W McDowell Rd
West Valley Hospital
Goodyear, AZ 85338-2635
Phone (602) 674-6506

146 E Geneva SQ
Lake Geneva, WI 53147-9694
Phone (262) 249-5000

1881 Chicago St
De Pere, WI 54115-3770
Phone (920) 403-8000

1910 Alabama St
Sturgeon Bay, WI 54235-3532
Phone (920) 746-7200

2000 E Layton Ave
Suite 130
St Francis, WI 53235-6067
Phone (414) 747-8856

201 E Morrissey Dr
Elkhorn, WI 53121-4395
Phone (262) 723-3100

210 Wisconsin American Dr
Fond Du Lac, WI 54937-2999
Phone (920) 907-4800

2219 Garfield St
Two Rivers, WI 54241-2416
Phone (920) 793-6317

2414 Kohler Memorial Dr
Sheboygan, WI 53081-3129
Phone (920) 457-4461

248 McHenry St
Burlington, WI 53105-1828
Phone (262) 767-8000

252 McHenry St
Burlington, WI 53105-1828
Phone (262) 767-7000

2600 Kiley Way
Plymouth, WI 53073-5020
Phone (920) 449-7000

2621 S Green Bay Rd
Racine, WI 53406-4948
Phone (262) 504-6100

2707 15TH PL
Kenosha, WI 53140-4947
Phone (262) 551-2700

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

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

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
79896AZMDDiagnostic Radiology Physician
036-126655ILMDDiagnostic Radiology Physician
2025-03105NCMDDiagnostic Radiology Physician
57118WIMDDiagnostic Radiology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Lakeshore Medical Clinic, LLC CurrentSince Dec 14, 2014 Accepting new patients
Aurora Advanced Healthcare, Inc. CurrentSince Feb 27, 2014 Accepting new patients
Aurora Medical Group, Inc. Diagnostic Radiology CurrentSince Jul 1, 2013 Accepting new patients
Amg Illinois LTD CurrentSince Mar 17, 2024 Accepting new patients
Aurora Advanced Healthcare Inc CurrentSince Feb 27, 2014 Accepting new patients
Advocate Health and Hospitals Corporation CurrentSince Jul 7, 2023 Accepting new patients
Wake Forest University Health Sciences CurrentSince Nov 3, 2025 Accepting new patients
Aurora Medical Group, Inc. CurrentSince Jul 1, 2013 Accepting new patients
Amg Illinois LTD CurrentSince Mar 17, 2024 Accepting new patients
Advocate Health and Hospitals Corporation Current Accepting new patients
Central Illinois Radiological Associates, LTD. Diagnostic Radiology CurrentSince Aug 1, 2026 Accepting new patients
Advocate Health & Hospitals Corporation CurrentSince Jul 7, 2023 Accepting new patients
Aurora Medical Group, Inc. Past Accepting new patients
The Medical College of Wisconsin, Inc. Past Accepting new patients

Locations (25 of 48)

214 McHenry Rd
Buffalo Grove, IL 60089
Phone (847) 459-1160

29373 Network Pl
Chicago, IL 60673

45 Tower Ct
Gurnee, IL 60031
Phone (847) 623-3200

45 Tower Ct
#C
Gurnee, IL 60031
Phone (847) 623-3200

223 W Ward St
Ste B
Asheboro, NC 27203
Phone (336) 702-1731

601 N Elm St
High Point, NC 27262
Phone (336) 878-6419

1814 Westchester Dr
Ste 100
High Point, NC 27262
Phone (336) 802-2397

Medical Ctr Blvd
Winston Salem, NC 27157
Phone (336) 713-2697

1611 S Madison St
Appleton, WI 54915
Phone (920) 727-4395

112 N US Highway 141
Crivitz, WI 54114
Phone (715) 735-6621

W3985 Highway NN
Elkhorn, WI 53121
Phone (262) 741-2000

12500 W Bluemound Rd
Elm Grove, WI 53122
Phone (262) 780-3434

210 Wisconsin American Dr
Fond du Lac, WI 54937
Phone (920) 907-7000

9200 W Loomis Rd
Franklin, WI 53132
Phone (414) 529-9200

7080 N Port Washington Rd
Glendale, WI 53217
Phone (414) 228-4940

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

2733 S Ridge Rd
Green Bay, WI 54304
Phone (920) 497-6200

2845 Greenbrier Rd
#4
Green Bay, WI 54311
Phone (920) 288-8400

2845 Greenbrier Rd
#1
Green Bay, WI 54311
Phone (920) 288-8100

123 N Military Ave
Green Bay, WI 54303
Phone (920) 494-3421

1004 E Sumner St
Hartford, WI 53027
Phone (262) 670-7000

7550 22nd Ave
Kenosha, WI 53143
Phone (262) 658-2500

10117 74th St
Ste 110
Kenosha, WI 53142
Phone (262) 697-1919

601 Reed Ave
Manitowoc, WI 54220
Phone (920) 682-8841

4061 Old Peshtigo Rd
Marinette, WI 54143
Phone (715) 732-8000

Interoperability endpoints

  • Direct secure messaging: emussak3044422@carolinashealthcaresystem.direct-ci.com
  • Direct secure messaging: emussak86828@direct.myadvocateaurora.org

Organizations & group practices 16

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.

View all 16

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": "1208217600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1777593600000",
    "number": "1639343148",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "29373 NETWORK PL",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606731293",
            "telephone_number": "847-390-5900"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "9200 W WISCONSIN AVE",
            "address_2": "DEPARTMENT OF RADIOLOGY",
            "city": "MILWAUKEE",
            "state": "WI",
            "postal_code": "532263522",
            "telephone_number": "414-805-3750",
            "fax_number": "414-259-9290"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1814 Westchester Dr Ste 100",
            "address_purpose": "LOCATION",
            "city": "High Point",
            "state": "NC",
            "postal_code": "272627369",
            "country_code": "US",
            "telephone_number": "336-802-2397",
            "fax_number": "336-802-2681",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "601 N Elm St",
            "address_purpose": "LOCATION",
            "city": "High Point",
            "state": "NC",
            "postal_code": "272624331",
            "country_code": "US",
            "telephone_number": "336-878-6000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "45 Tower Ct Ste C",
            "address_purpose": "LOCATION",
            "city": "Gurnee",
            "state": "IL",
            "postal_code": "600313376",
            "country_code": "US",
            "telephone_number": "847-623-3200",
            "fax_number": "847-623-9168",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "13677 W McDowell Rd",
            "address_purpose": "LOCATION",
            "city": "Goodyear",
            "state": "AZ",
            "postal_code": "853952635",
            "country_code": "US",
            "telephone_number": "623-882-1500",
            "fax_number": "623-882-1912",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MUSSAK",
        "first_name": "ERICH",
        "middle_name": "NICHOLAI",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2008-04-15",
        "last_updated": "2026-05-01",
        "certification_date": "2026-05-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "IL",
            "license": "036-126655",
            "primary": false
        },
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "NC",
            "license": "2025-03105",
            "primary": false
        },
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "WI",
            "license": "57118",
            "primary": true
        },
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "AZ",
            "license": "79896",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1639343148",
            "state": "WI"
        }
    ],
    "endpoints": [
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/",
            "affiliation": "N",
            "address_1": "9200 W Wisconsin Ave",
            "address_2": "DEPARTMENT OF RADIOLOGY",
            "city": "Milwaukee",
            "state": "WI",
            "country_code": "US",
            "postal_code": "532263522",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "emussak86828@direct.myadvocateaurora.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "9200 W Wisconsin Ave",
            "address_2": "DEPARTMENT OF RADIOLOGY",
            "city": "Milwaukee",
            "state": "WI",
            "country_code": "US",
            "postal_code": "532263522",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "emussak86828@direct.myadvocateaurora.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "45 Tower Ct Ste C",
            "city": "Gurnee",
            "state": "IL",
            "country_code": "US",
            "postal_code": "600313376",
            "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": "45 Tower Ct Ste C",
            "city": "Gurnee",
            "state": "IL",
            "country_code": "US",
            "postal_code": "600313376",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Milwaukee, WI

Sources for this page

Verify at the official NPI Registry.