William Cromartie Elliott Jr., M.D.

Primary specialty

Nephrology PhysicianTaxonomy code 207RN0300X

License

26958 Issued in WI

Practice address

2901 W Kinnickinnic River Pkwy Ste 413
Milwaukee, WI 53215-3660

Phone

(414) 383-7744

Fax

(414) 383-8089

NPI assigned

Feb 14, 2006

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other identifiers 1

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

Merit-based Incentive Payment System (MIPS)

Final score

84.73 of 100Reported as group

Quality

65.3

Promoting interoperability

65

Improvement activities

40

Cost

82.4

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://fhir-api.fhirprod.aws.greenwayhealth.com/fhir/R4/2.16.840.1.113883.3.140.71975
• Direct secure messaging: william.elliott@milwaukeenephrologists.directbygreenway.com

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.

• Milwaukee Nephrologists, S.C.

  • Nephrology Physician
  • Milwaukee, WI
  • NPI 1982763405
  Medicare reassignment NPD
• Garfield Dialysis Venture LLC

  • Clinic/Center
  • Milwaukee, WI
  • NPI 1043491194
  NPD (past)

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

{
    "created_epoch": "1139875200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1781481600000",
    "number": "1861466161",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2514 S 102ND ST STE 120",
            "city": "WEST ALLIS",
            "state": "WI",
            "postal_code": "532272142",
            "telephone_number": "414-777-5200",
            "fax_number": "414-777-5210"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2901 W KINNICKINNIC RIVER PKWY STE 413",
            "city": "MILWAUKEE",
            "state": "WI",
            "postal_code": "532153660",
            "telephone_number": "414-383-7744",
            "fax_number": "414-383-8089"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ELLIOTT",
        "first_name": "WILLIAM",
        "middle_name": "CROMARTIE",
        "name_prefix": "Dr.",
        "name_suffix": "Jr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-02-14",
        "last_updated": "2026-06-15",
        "certification_date": "2026-06-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RN0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Nephrology",
            "state": "WI",
            "license": "26958",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "31552900",
            "state": "WI"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Amy A Elliott, D.C.
• Brandon Elliott, MD
• Kathryn M. Elliott, D.M.D
• Lisa Elliott
• Tory Skye Elliott, PHD
• Alexandria Ellis
• Angela Ellis, RDN, CD, CLC
• Austin Ellis, MD
• Eddie Ellis
• Jarmaine Lee Ellis, LPN

• Nephrology Physician in Milwaukee, WI
• Providers in Milwaukee, WI by specialty
• Nephrology Physician in Wisconsin

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 15, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.