Tonja Leana Winekauf, ARNP

Primary specialty

Family Nurse PractitionerTaxonomy code 363LF0000X

License

106627 Issued in IA

Practice address

20 S Plum St
Vermillion, SD 57069-3346

Phone

(605) 677-3700

NPI assigned

Jul 21, 2011

Sex

Female

Sole proprietor

No

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

Specialties & licenses 3

Addresses

Other identifiers 1

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in IA, SD2 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

Specialty

Nurse Practitioner

Education

Other, 2024

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Iowa Physicians Clinic Medical FoundationGroup PAC ID 8729992318, 1,254 clinicians

Floyd Valley HealthcareGroup PAC ID 2769385475, shared by 5 NPIs, 35 clinicians

Northwest Iowa Hospital CorporationGroup PAC ID 0749198026, 139 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• St Lukes Regional Medical Center Hospital, Sioux City, IA, CCN 160146
• Sanford Vermillion Medical Center Hospital, Vermillion, SD, CCN 431336
• Mercyone Siouxland Medical Center Hospital, Sioux City, IA, CCN 160153

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: tonja.winekauf.p20@direct.trinity-healthiowa.nextgenshare.com
• Direct secure messaging: -tonja.winekauf.p20@direct.trinity-healthiowa.nextgenshare.com
• Direct secure messaging: tonja.winekauf@avera.sdhealthlink.net

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.

• Iowa Physicians Clinic Medical Foundation

  dba UnityPoint Clinic

  • General Practice Physician
  • West Des Moines, IA
  • NPI 1366425274

  SD

  Medicare reassignment Care Compare group NPD
• Northwest Iowa Hospital Corporation

  dba St. Luke's Regional Medical Center

  • Emergency Medical Services (Emergency Medicine) Physician
  • Sioux City, IA
  • NPI 1215962550

  Nurse Practitioner

  Medicare reassignment Care Compare group NPD
• Floyd Valley Healthcare

  • Critical Access Hospital
  • Le Mars, IA
  • NPI 1326109315
  Medicare reassignment NPD
• Floyd Valley Healthcare

  dba Floyd Valley ER Services

  • Emergency Medicine Physician
  • Le Mars, IA
  • NPI 1578625653
  Medicare reassignment NPD
• Hawarden Regional Healthcare

  • Critical Access Hospital
  • Hawarden, IA
  • NPI 1841261104
  Medicare reassignment NPD
• Hawarden Regional Healthcare Clinics LLC

  • Family Medicine Physician
  • Hawarden, IA
  • NPI 1750324612
  Medicare reassignment NPD
• Mercyone Central Iowa Urgent Care

  • Clinic/Center
  • Des Moines, IA
  • NPI 1790422095
  Medicare reassignment NPD
• Sanford Health Network

  dba Sanford Care Center Vermillion

  • Critical Access Hospital
  • Vermillion, SD
  • NPI 1790721280
  Medicare reassignment
• Sanford Health Network

  dba Sanford Clinic Vermillion

  • Family Medicine Physician
  • Vermillion, SD
  • NPI 1013921733

  Nurse Practitioner

  NPD
• Sanford Health Network

  dba Sanford Chamberlain Medical Center

  • Critical Access Hospital
  • Chamberlain, SD
  • NPI 1134140825
  NPD
• Floyd Valley Healthcare

  dba Floyd Valley Clinics

  • Family Medicine Physician
  • Le Mars, IA
  • NPI 1447484472
  NPD
• Floyd Valley Healthcare

  dba Floyd Valley Pharmacy

  • Community/Retail Pharmacy
  • Le Mars, IA
  • NPI 1710765433
  NPD

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

• Sanford Health Network

  dba Sanford Clinic Vermillion

  • Family Medicine Physician
  • Vermillion, SD
  • NPI 1013921733

  Hospital

  Care Compare affiliation
• Sanford Health Network

  dba Sanford Care Center Vermillion

  • Critical Access Hospital
  • Vermillion, SD
  • NPI 1790721280
  Care Compare affiliation
• Northwest Iowa Hospital Corporation

  dba St Lukes Regional Medical Center

  • General Acute Care Hospital
  • Sioux City, IA
  • NPI 1962594622
  Care Compare affiliation

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

{
    "created_epoch": "1311206400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1766102400000",
    "number": "1710275912",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 5074",
            "city": "SIOUX FALLS",
            "state": "SD",
            "postal_code": "571175074"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "20 S PLUM ST",
            "city": "VERMILLION",
            "state": "SD",
            "postal_code": "570693346",
            "telephone_number": "605-677-3700"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "3520 Singing Hills Blvd",
            "address_purpose": "LOCATION",
            "city": "Sioux City",
            "state": "IA",
            "postal_code": "511065110",
            "country_code": "US",
            "telephone_number": "712-294-7400",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "WINEKAUF",
        "first_name": "TONJA",
        "middle_name": "LEANA",
        "credential": "ARNP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2011-07-21",
        "last_updated": "2025-12-19",
        "certification_date": "2025-12-19",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "IA",
            "license": "106627",
            "primary": true
        },
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "IN",
            "license": "71006713A",
            "primary": false
        },
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "SD",
            "license": "CP002690",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "IOWA BOARD OF NURSING",
            "identifier": "106627",
            "state": "IA"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "-tonja.winekauf.p20@direct.trinity-healthiowa.nextgenshare.com",
            "affiliation": "N",
            "endpointDescription": "MercyOne West Direct Email Address",
            "address_1": "3520 Singing Hills Blvd",
            "city": "Sioux City",
            "state": "IA",
            "country_code": "US",
            "postal_code": "511065110",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Allison Walsh, LPC
• Heidi Waters
• Nancy Jo Weber, PT
• William Saunders D C P C
• Mandy J Williams, PH.D., CCC-SLP
• Wollmans of Vermillion (Choice Unit Dose)
• Wollmans of Vermillion (Choice Pharmacy)
• Yankton Medical Clinic PC (Vermillion Medical Clinic)
• Charles C Yelverton, MD
• Cora Ann Youngberg

• Family Nurse Practitioner in Vermillion, SD
• Providers in Vermillion, SD by specialty
• Family Nurse Practitioner in South Dakota

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Dec 19, 2025; 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.