Katherine Hartstern, MD

Primary specialty

Family Medicine PhysicianTaxonomy code 207Q00000X

License

82621 Issued in WI

Practice address

1855 S Koeller St
Oshkosh, WI 54902-6186

Phone

(920) 738-2000

NPI assigned

Jun 3, 2020

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

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

Specialty

Family Practice

Education

Other, 2020

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)

Hospital & facility affiliations

• Ascension NE Wisconsin - St Elizabeth Campus Hospital, Appleton, WI, CCN 520009

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

  • Cardiovascular Disease Physician
  • Appleton, WI
  • NPI 1831890177
  NPD

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

• Ascension NE Wisconsin, Inc

  • Ambulatory Surgical Clinic/Center
  • Menasha, WI
  • NPI 1124075536

  Hospital

  Care Compare affiliation
• Ascension NE Wisconsin, Inc

  • General Acute Care Hospital
  • Appleton, WI
  • NPI 1407803638
  Care Compare affiliation

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

{
    "created_epoch": "1591142400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1742342400000",
    "number": "1437773652",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1855 S KOELLER ST",
            "city": "OSHKOSH",
            "state": "WI",
            "postal_code": "549026186",
            "telephone_number": "920-738-2000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1855 S KOELLER ST",
            "city": "OSHKOSH",
            "state": "WI",
            "postal_code": "549026186",
            "telephone_number": "920-738-2000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HARTSTERN",
        "first_name": "KATHERINE",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2020-06-03",
        "last_updated": "2025-03-19",
        "certification_date": "2025-03-19",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "IL",
            "license": "125076039",
            "primary": false
        },
        {
            "code": "207Q00000X",
            "taxonomy_group": "",
            "desc": "Family Medicine",
            "state": "WI",
            "license": "82621",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "100253512",
            "state": "WI"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• David R Harry, DDS
• Paula F. Harry, LCSW
• Jennifer L Hart, NP
• Theresa Marie Hart, RN
• Amysue Hartman, MA
• Jay Marvin Hartz, MD
• Allison Carrie Harwood, APNP
• Allen Lee Hauer, PH. D.
• Kristin Joy Havel, LPC
• Heather Hawk

• Family Medicine Physician in Oshkosh, WI
• Providers in Oshkosh, WI by specialty
• Family Medicine Physician in Wisconsin

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