NPIMap

Individual provider Active NPI

Winn Trevett Cashion, MD, PHD

  • Nephrology Physician
  • Milwaukee, WI
National Provider Identifier
1720474109
Registry record updated Dec 19, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Nephrology PhysicianTaxonomy code 207RN0300X
License
86669-020 Issued in WI
Practice address
9200 W Wisconsin Ave
Milwaukee, WI 53226-3522
Phone
(414) 805-3100
Fax
(414) 532-9584
NPI assigned
Apr 12, 2015
Last updated
Dec 19, 2025By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Dec 19, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Nephrology Physician 207RN0300X MD27640 ME
Nephrology Physician 207RN0300X 86669-020 WI Primary

Addresses

Primary practice location

9200 W Wisconsin Ave
Milwaukee, WI 53226-3522

Mailing address

9200 W Wisconsin Ave
Milwaukee, WI 53226-3522
Phone (414) 805-3100

Other identifiers 1

IdentifierTypeStateIssuer
1720474109MedicaidWI

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in ME, WI2 enrollments
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20240110001708 ME Practitioner - Nephrology 3870829328
I20251222001851 WI Practitioner - Nephrology 3870829328 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Nephrology
Education
Emory University School of Medicine, 2015
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
The Medical College of Wisconsin IncGroup PAC ID 2668384371, 2,092 clinicians

Practice addresses (Care Compare)

8701 W Watertown Plank
Milwaukee, WI 53226-3548
Phone (414) 805-3666

8701 Watertown Plank Rd
Room 4041 MFRC
Milwaukee, WI 53226-3548
Phone (414) 805-3666

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
97.93 of 100Reported as apm
Quality
83.31
Promoting interoperability
100
Improvement activities
40

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
86669-020WIMDNephrology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Mainehealth CurrentSince Jan 1, 2024 Accepting new patients
Mainehealth CurrentSince Jan 1, 2024 Accepting new patients
The Medical College of Wisconsin, Inc. CurrentSince Dec 9, 2025 Accepting new patients
Mainehealth Current Accepting new patients
Windber Hospital, Inc. Past Accepting new patients
Mainehealth Past Accepting new patients

Locations

22 Bramhall St
Portland, ME 04102
Phone (207) 662-2179

43 Baxter Blvd
Portland, ME 04101
Phone (207) 771-1717

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

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

Organizations & group practices 6

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

Hospital & facility affiliations 39

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

View all 39

NPI Registry JSON

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

{
    "created_epoch": "1428796800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1766102400000",
    "number": "1720474109",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "9200 W WISCONSIN AVE",
            "city": "MILWAUKEE",
            "state": "WI",
            "postal_code": "532263522",
            "telephone_number": "414-805-3100",
            "fax_number": "414-532-9584"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "9200 W WISCONSIN AVE",
            "city": "MILWAUKEE",
            "state": "WI",
            "postal_code": "532263522",
            "telephone_number": "414-805-3100",
            "fax_number": "414-532-9584"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CASHION",
        "first_name": "WINN",
        "middle_name": "TREVETT",
        "credential": "MD, PHD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2015-04-12",
        "last_updated": "2025-12-19",
        "certification_date": "2025-12-19",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RN0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Nephrology",
            "state": "ME",
            "license": "MD27640",
            "primary": false
        },
        {
            "code": "207RN0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Nephrology",
            "state": "WI",
            "license": "86669-020",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1720474109",
            "state": "WI"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Milwaukee, WI

Sources for this page

Verify at the official NPI Registry.