Margaret Katherine Walker, DPT

Primary specialty

Physical TherapistTaxonomy code 225100000X

License

16053 Issued in WI

Practice address

4131 W Loomis Rd Ste 200
Greenfield, WI 53221-2041

Phone

(414) 422-2191

NPI assigned

Aug 10, 2022

Sex

Female

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

Electronic endpoints 2

Medicare fee-for-service enrollment

Enrolled in WI

Enrollment records 1

Specialty

Physical Therapist in Private Practice

Education

Other, 2022

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Independent Physicians of Wisconsin LLCGroup PAC ID 3274842034, 42 clinicians

Vita Physical Therapy SCGroup PAC ID 4981667235, 5 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: margaret.walker.1@18758.direct.athenahealth.com
• Direct secure messaging: mwalker326825@direct.myadvocateaurora.org

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.

• Independent Physicians of Wisconsin, LLC

  • Internal Medicine Physician
  • Milwaukee, WI
  • NPI 1871975920
  Medicare reassignment Care Compare group NPD
• Vita Physical Therapy SC

  • Physical Therapy Clinic/Center
  • Milwaukee, WI
  • NPI 1255386454

  Physical Therapist

  Medicare reassignment Care Compare group NPD
• Froedtert &the Medical College of Wisconsin Community Physicians, Inc.

  • Internal Medicine Physician
  • Menomonee Falls, WI
  • NPI 1568787448
  Medicare reassignment NPD
• Aurora Advanced Healthcare, Inc.

  • Family Medicine Physician
  • Milwaukee, WI
  • NPI 1265629133
  Medicare reassignment
• Aurora Medical Group, Inc.

  • Certified Registered Nurse Anesthetist
  • Milwaukee, WI
  • NPI 1427271378
  Medicare reassignment
• Lakeshore Medical Clinic, LLC

  • Family Medicine Physician
  • Saint Francis, WI
  • NPI 1003861188
  Medicare reassignment
• Froedtert &the Medical College of Wisconsin Community Physicians, Inc.

  • Durable Medical Equipment & Medical Supplies
  • Wauwatosa, WI
  • NPI 1154947224
  NPD
• Independent Physicians of Wisconsin, LLC

  • Durable Medical Equipment & Medical Supplies
  • Kenosha, WI
  • NPI 1588255996
  NPD
• The Medical College of Wisconsin, Inc.

  • Internal Medicine Physician
  • Milwaukee, WI
  • NPI 1699720086

  Physical Therapist

  NPD

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

{
    "created_epoch": "1660089600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1769040000000",
    "number": "1487382214",
    "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": "4131 W LOOMIS RD STE 200",
            "city": "GREENFIELD",
            "state": "WI",
            "postal_code": "532212041",
            "telephone_number": "414-422-2191"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "7901 S 6th St",
            "address_purpose": "LOCATION",
            "city": "Oak Creek",
            "state": "WI",
            "postal_code": "531542010",
            "country_code": "US",
            "telephone_number": "414-346-8000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "WALKER",
        "first_name": "MARGARET",
        "middle_name": "KATHERINE",
        "credential": "DPT",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2022-08-10",
        "last_updated": "2026-01-22",
        "certification_date": "2026-01-22",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "225100000X",
            "taxonomy_group": "",
            "desc": "Physical Therapist",
            "state": "WI",
            "license": "16053",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "100213891",
            "state": "WI"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "mwalker326825@direct.myadvocateaurora.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "4131 W LOOMIS RD STE 200",
            "city": "GREENFIELD",
            "state": "WI",
            "country_code": "US",
            "postal_code": "532212041",
            "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": "4131 W LOOMIS RD STE 200",
            "city": "GREENFIELD",
            "state": "WI",
            "country_code": "US",
            "postal_code": "532212041",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Walgreen Co
• Walgreen Co
• Erica A Walhovd, RDN
• Cynthia L Walker, PT
• Juwonna Walker
• William Walker
• Elise M Wallgren, PT
• Marion Ruth Walton, R.N., MS
• Carol Lynn Wandler
• Dana Holaday Washburn, OTR/L

• Physical Therapist in Greenfield, WI
• Providers in Greenfield, WI by specialty
• Physical Therapist in Wisconsin

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 22, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• 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.