Katelyn Ostendorf Stepan, MD

Primary specialty

Otolaryngology PhysicianTaxonomy code 207Y00000X

License

036153453 Issued in IL

Practice address

676 N Saint Clair St Ste 1200
Chicago, IL 60611-3068

Phone

(312) 695-8182

Fax

(312) 695-4303

NPI assigned

Apr 16, 2014

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

Medicare fee-for-service enrollment

Enrolled in IL

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

Otolaryngology

Education

Washington University School of Medicine, 2014

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Northwestern Medical Faculty FoundationGroup PAC ID 4587576814, 4,386 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Northwestern Memorial Hospital Hospital, Chicago, IL, CCN 140281
• Northwestern Medicine Central Dupage Hospital Hospital, Winfield, IL, CCN 140242
• Northwestern Medicine Delnor Community Hospital Hospital, Geneva, IL, CCN 140211
• Northwestern Lake Forest Hospital Hospital, Lake Forest, IL, CCN 140130
• Northwestern Medicine McHenry Hospital, McHenry, IL, CCN 140116

Merit-based Incentive Payment System (MIPS)

Final score

95.19 of 100Reported as apm

Quality

83.05

Promoting interoperability

100

Improvement activities

40

Procedures performed for Medicare patients

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.

• Northwestern Medical Faculty Foundation

  • Multi-Specialty Clinic/Center
  • Carol Stream, IL
  • NPI 1346235314
  Medicare reassignment Care Compare group NPD
• Central Dupage Hospital Association

  • General Acute Care Hospital
  • Winfield, IL
  • NPI 1003864810
  Medicare reassignment NPD
• Central Dupage Hospital Association

  • Psychiatric Hospital Unit
  • Winfield, IL
  • NPI 1740230895
  NPD
• Northwestern Medical Faculty Foundation

  • Durable Medical Equipment & Medical Supplies
  • Chicago, IL
  • NPI 1417718479
  NPD
• Central Dupage Physician Group

  • Family Medicine Physician
  • Carol Stream, IL
  • NPI 1033149844
  NPD (past)

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

• Central Dupage Hospital Association

  • General Acute Care Hospital
  • Winfield, IL
  • NPI 1003864810
  Care Compare affiliation
• Central Dupage Hospital Association

  • Psychiatric Hospital Unit
  • Winfield, IL
  • NPI 1740230895
  Care Compare affiliation
• Delnor Community Hospital

  • General Acute Care Hospital
  • Geneva, IL
  • NPI 1407859655
  Care Compare affiliation
• Northern Illinois Medical Center

  • General Acute Care Hospital
  • McHenry, IL
  • NPI 1982611281
  Care Compare affiliation
• Northwestern Lake Forest Hospital

  • General Acute Care Hospital
  • Lake Forest, IL
  • NPI 1124025176
  Care Compare affiliation
• Northwestern Memorial Hospital

  • General Acute Care Hospital
  • Chicago, IL
  • NPI 1497859649
  Care Compare affiliation

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

{
    "created_epoch": "1397606400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1775433600000",
    "number": "1326468489",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "676 N SAINT CLAIR ST STE 1200",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606113068",
            "telephone_number": "312-695-8182",
            "fax_number": "312-695-4303"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "676 N SAINT CLAIR ST STE 1200",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606113068",
            "telephone_number": "312-695-8182",
            "fax_number": "312-695-4303"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "4921 Parkview Pl",
            "address_2": "Ste 11A",
            "address_purpose": "LOCATION",
            "city": "Saint Louis",
            "state": "MO",
            "postal_code": "631101032",
            "country_code": "US",
            "telephone_number": "314-362-7509",
            "fax_number": "314-747-5593",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "STEPAN",
        "first_name": "KATELYN",
        "middle_name": "OSTENDORF",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2014-04-16",
        "last_updated": "2026-04-06",
        "certification_date": "2026-04-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207Y00000X",
            "taxonomy_group": "",
            "desc": "Otolaryngology",
            "state": "MO",
            "license": "2019013305",
            "primary": false
        },
        {
            "code": "207Y00000X",
            "taxonomy_group": "",
            "desc": "Otolaryngology",
            "state": "IL",
            "license": "036153453",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Kerstin M Stenson, MD
• Kyle David Stenzel
• Step Ahead ABA LLC
• Step of Faith Inc
• Jeffrey Stepan
• Rebecca Stepanek
• Stepanie Evans LPCL Inc
• Jennifer Stepaniuk, DPT
• Adam Zale Stepanovic, MD
• Kathleen Stepanovic

• Otolaryngology Physician in Chicago, IL
• Providers in Chicago, IL by specialty
• Otolaryngology Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 6, 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.