Karolina Stack, M.D.

Primary specialty

Pediatrics PhysicianTaxonomy code 208000000X

License

83243 Issued in WI

Practice address

2700 W 9TH Ave Ste 211
Oshkosh, WI 54904-7865

Phone

(920) 223-8000

NPI assigned

Mar 27, 2017

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 3

Addresses

Other identifiers 1

Other names 1

• Karolina Sabaliauskaite Former name

Electronic endpoints 2

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

Specialty

Pediatric Medicine

Education

Loyola University of Chicago, Stritch School of Medicine, 2017

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Ascension Medical Group-Fox Valley Wisconsin, IncGroup PAC ID 0244142420, 260 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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.

• Ascension Medical Group-Fox Valley Wisconsin, Inc

  • Multi-Specialty Clinic/Center
  • Neenah, WI
  • NPI 1730126392

  Single Specialty

  Medicare reassignment Care Compare group NPD
• Ascension Medical Group-Fox Valley Wisconsin, Inc

  • Cardiovascular Disease Physician
  • Appleton, WI
  • NPI 1831890177

  Single Specialty

  NPD
• Pediatrust, L.L.C.

  • Pediatrics Physician
  • Lake Forest, IL
  • NPI 1982958013

  Single Specialty

  NPD (past)

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

{
    "created_epoch": "1490572800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1751241600000",
    "number": "1053842443",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2700 W 9TH AVE STE 211",
            "city": "OSHKOSH",
            "state": "WI",
            "postal_code": "549047865",
            "telephone_number": "920-738-2000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2700 W 9TH AVE STE 211",
            "city": "OSHKOSH",
            "state": "WI",
            "postal_code": "549047865",
            "telephone_number": "920-223-8000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "STACK",
        "first_name": "KAROLINA",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2017-03-27",
        "last_updated": "2025-06-30",
        "certification_date": "2025-06-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "IL",
            "license": "1053842243",
            "primary": false
        },
        {
            "code": "208000000X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Pediatrics",
            "state": "IL",
            "license": "036.151998",
            "primary": false
        },
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "WI",
            "license": "83243",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "100273308",
            "state": "WI"
        }
    ],
    "endpoints": [
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicfhir.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/",
            "affiliation": "N",
            "address_1": "525 E Congress Pkwy Ste 220",
            "city": "Crystal Lake",
            "state": "IL",
            "country_code": "US",
            "postal_code": "600146258",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "kstack277353@direct.myadvocateaurora.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "525 E Congress Pkwy Ste 220",
            "city": "Crystal Lake",
            "state": "IL",
            "country_code": "US",
            "postal_code": "600146258",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": [
        {
            "first_name": "KAROLINA",
            "last_name": "SABALIAUSKAITE",
            "credential": "MD",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Kevin Walter Spengler, DPT
• Alyssa Spottek, RBT
• Brad Spross
• Zechariah David Spychalla, MD
• Jennifer L Srnka, LCSW
• Ruth Staszak, APNP
• Pang Dlib Steckbauer, PMHNP-BC
• Wyn Steckbauer, D.M.D.
• Mary Gwen Steffen, A.P.N.P.
• Katie Stegeman

• Pediatrics Physician in Oshkosh, WI
• Providers in Oshkosh, WI by specialty
• Pediatrics Physician in Wisconsin

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 30, 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.