Individual provider Active NPI

Alix Mertens, PA-C

  • Physician Assistant
  • Milwaukee, WI
National Provider Identifier
1376184549
Registry record updated Dec 3, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Physician AssistantTaxonomy code 363A00000X
License
4730-23 Issued in WI
Practice address
2801 W Kinnickinnic River Pkwy
Milwaukee, WI 53215
Phone
(414) 649-3370
NPI assigned
Sep 30, 2019
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Dec 3, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Physician Assistant 363A00000X 4730-23 WI Primary

Addresses

Primary practice location

2801 W Kinnickinnic River Pkwy
Milwaukee, WI 53215

Mailing address

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

Other practice location 1

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

Other practice location 2

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

Other identifiers 1

IdentifierTypeStateIssuer
100095045MedicaidWI

Electronic endpoints 2

TypeEndpointUseAffiliation
Direct Messaging Address amertens201753@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, CO2 enrollments
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: No
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20191119001488 WI Practitioner - Physician Assistant 5395177000 Reassigns benefits to 1 organization
I20221221003164 CO Practitioner - Physician Assistant 5395177000 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Physician Assistant
Education
Other, 2019
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Intermountain Medical Group Denver LLCGroup PAC ID 0840513552, 571 clinicians

Practice addresses (Care Compare)

Broomfield, CO 80021
Phone (720) 807-4461

12905 W 40TH Ave
Wheat Ridge, CO 80401-2793

8350 Colorado Blvd
Unit 160
Firestone, CO 80504-6803
Phone (303) 673-1370

Hospital & facility affiliations

  • Intermountain Health Lutheran Hospital Hospital, Wheat Ridge, CO, CCN 060009

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Physician Assistant

State licenses

LicenseStateTypeSpecialty
4730-23WIMDPhysician Assistant

Practice roles

OrganizationSpecialtyStatusNew patients
Aurora Medical Group, Inc. CurrentSince Dec 2, 2019 Accepting new patients
Aurora Medical Group, Inc. CurrentSince Dec 2, 2019 Accepting new patients
Intermountain Medical Group Denver, LLC CurrentSince Jul 4, 2023 Accepting new patients
Intermountain Medical Group Denver, LLC CurrentSince Jul 4, 2023 Accepting new patients
Intermountain Medical Group Denver, LLC Past Accepting new patients

Locations

500 Eldorado Blvd
Ste 4300
Broomfield, CO 80021

12905 W 40th Ave
Ste 305
Golden, CO 80401
Phone (303) 265-5730

3655 Lutheran Pkwy
Ste 201
Wheat Ridge, CO 80033
Phone (303) 420-0206

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

3301 W Forest Home Ave
Milwaukee, WI 53215
Phone (414) 389-2233

2801 W Kinnickinnic River Pkwy
Milwaukee, WI 53215
Phone (414) 384-5111

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

Interoperability endpoints

  • Direct secure messaging: amertens201753@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 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": "1569801600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1764720000000",
    "number": "1376184549",
    "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": "2801 W KINNICKINNIC RIVER PKWY",
            "city": "MILWAUKEE",
            "state": "WI",
            "postal_code": "53215",
            "telephone_number": "414-649-3370"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2900 W Oklahoma Ave",
            "address_purpose": "LOCATION",
            "city": "Milwaukee",
            "state": "WI",
            "postal_code": "532154330",
            "country_code": "US",
            "telephone_number": "414-649-6000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2900 W Oklahoma Ave",
            "address_purpose": "LOCATION",
            "city": "Milwaukee",
            "state": "WI",
            "postal_code": "532154330",
            "country_code": "US",
            "telephone_number": "414-649-6000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MERTENS",
        "first_name": "ALIX",
        "credential": "PA-C",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2019-09-30",
        "last_updated": "2025-12-03",
        "certification_date": "2025-12-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "WI",
            "license": "4730-23",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "100095045",
            "state": "WI"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "amertens201753@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.