Anastasija Steffek, FNP

Primary specialty

Family Nurse PractitionerTaxonomy code 363LF0000X

License

71017791A Issued in IN

Practice address

505 E 1100 N
Chesterton, IN 46304-9697

Phone

(219) 926-3420

NPI assigned

Feb 25, 2026

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

Medicare fee-for-service enrollment

Enrolled in IN

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 1

Specialty

Nurse Practitioner

Education

Other, 2025

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Minuteclinic Diagnostics of Indiana LLCGroup PAC ID 3072548502, 121 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

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.

• Minuteclinic Diagnostics of Indiana, LLC

  • Family Nurse Practitioner
  • Zionsville, IN
  • NPI 1932171634
  Medicare reassignment Care Compare group

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

{
    "created_epoch": "1771977600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1772064000000",
    "number": "1639023732",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "8560 VALLEY FORGE WAY",
            "city": "LOWELL",
            "state": "IN",
            "postal_code": "463562196"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "505 E 1100 N",
            "city": "CHESTERTON",
            "state": "IN",
            "postal_code": "463049697",
            "telephone_number": "219-926-3420"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "STEFFEK",
        "first_name": "ANASTASIJA",
        "credential": "FNP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2026-02-25",
        "last_updated": "2026-02-26",
        "certification_date": "2026-02-26",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "IN",
            "license": "71017791A",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Stephanie M Sotiropoulos
• Melissa Lynn Spanier
• Valerie Jo Spaulding, NONE
• Roderic Spencer, RBT
• Marla Sroczynski, RBT
• Bernard J Stento, MS, LAT, ATC
• Lisa R Stephenson, NP
• Rachel L Stern, DPM
• Amy Stevens, CADAC II
• Diane E Stevens, P.T.

• Family Nurse Practitioner in Chesterton, IN
• Providers in Chesterton, IN by specialty
• Family Nurse Practitioner in Indiana

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 26, 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.