William Joseph Stephan, MD

Primary specialty

Interventional Cardiology PhysicianTaxonomy code 207RI0011X

License

036.090607 Issued in IL

Practice address

10 Martin Ave Ste 200
Naperville, IL 60540-6535

Phone

(630) 600-0700

Fax

(630) 600-0701

NPI assigned

May 18, 2006

Sex

Male

Sole proprietor

No

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

Specialties & licenses 3

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

Interventional CardiologyAlso: Cardiovascular Disease (Cardiology)

Education

Tufts University School of Medicine, 1987

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Cardiovascular Institute Gpe IncGroup PAC ID 9739697574, 51 clinicians

Edward HospitalGroup PAC ID 0042108110, 98 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Edward Hospital Hospital, Naperville, IL, CCN 140231
• Elmhurst Memorial Hospital Hospital, Elmhurst, IL, CCN 140200
• Northwestern Medicine Central Dupage Hospital Hospital, Winfield, IL, CCN 140242
• Northwestern Medicine Delnor Community Hospital Hospital, Geneva, IL, CCN 140211

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://fhirprd.edward.org/fhirprd/api/FHIR/R4/

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.

• Cardiovascular Institute Gpe Inc

  • Cardiovascular Disease Physician
  • Naperville, IL
  • NPI 1992594022
  Medicare reassignment Care Compare group NPD
• Edward Hospital

  • General Acute Care Hospital
  • Naperville, IL
  • NPI 1013969013
  Medicare reassignment Care Compare group NPD
• Advocate Health and Hospitals Corporation

  • Multi-Specialty Clinic/Center
  • Oak Brook, IL
  • NPI 1700824455
  Medicare reassignment NPD
• Midwest Cardiovascular Institute SC

  • Cardiovascular Disease Physician
  • Naperville, IL
  • NPI 1003491549
  Medicare reassignment NPD
• Advocate Health & Hospitals Corporation

  • Medical Specialty Clinic/Center
  • Oak Lawn, IL
  • NPI 1912936014
  NPD
• Advocate Health and Hospitals Corporation

  • Children's Hospital
  • Oak Lawn, IL
  • NPI 1508315516
  NPD
• Edward Hospital

  • Home Health Agency
  • Naperville, IL
  • NPI 1912930645

  Cardiovascular Disease

  NPD
• Edward Cardiovascular Institute

  • Cardiovascular Disease Physician
  • Naperville, IL
  • NPI 1649386400
  NPD (past)
• Edward Cardiovascular Institute

  • Cardiovascular Disease Physician
  • Yorkville, IL
  • NPI 1992806517
  NPD (past)
• Midwest Heart Specialists, LTD

  • Cardiovascular Disease Physician
  • Downers Grove, IL
  • NPI 1417908765
  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
• Edward Hospital

  • General Acute Care Hospital
  • Naperville, IL
  • NPI 1427069632
  Care Compare affiliation
• Elmhurst Memorial Hospital

  • General Acute Care Hospital
  • Elmhurst, IL
  • NPI 1548306343
  Care Compare affiliation

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

{
    "created_epoch": "1147910400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1745452800000",
    "number": "1851344931",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "10 MARTIN AVE STE 200",
            "city": "NAPERVILLE",
            "state": "IL",
            "postal_code": "605406535",
            "telephone_number": "630-600-0700",
            "fax_number": "630-600-0701"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "10 MARTIN AVE STE 200",
            "city": "NAPERVILLE",
            "state": "IL",
            "postal_code": "605406535",
            "telephone_number": "630-600-0700",
            "fax_number": "630-600-0701"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "STEPHAN",
        "first_name": "WILLIAM",
        "middle_name": "JOSEPH",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-05-18",
        "last_updated": "2025-04-24",
        "certification_date": "2025-04-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "IL",
            "license": "036.090607",
            "primary": false
        },
        {
            "code": "207RI0011X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Interventional Cardiology",
            "state": "IL",
            "license": "036090607",
            "primary": false
        },
        {
            "code": "207RI0011X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Interventional Cardiology",
            "state": "IL",
            "license": "036.090607",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Alome L Stein, PSY.D.
• Olivia Steinberg
• Stephen P. Steinmetz, O.D.
• Clara Stelman
• Leslie Olivia Stentz, DC
• Stephanie J. Spackey, LTD.
• Stephen P. Steinmetz
• Tracy Stephen, ATC/LAT
• Maryellen Sterk
• Daniel R Sterling, PHARMD

• Interventional Cardiology Physician in Naperville, IL
• Providers in Naperville, IL by specialty
• Interventional Cardiology Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 24, 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.