August Didion Sigelko, MD

Primary specialty

Critical Care Medicine (Internal Medicine) PhysicianTaxonomy code 207RC0200X

License

036160895 Issued in IL

Practice address

2040 Ogden Ave Ste 401
Aurora, IL 60504-7208

Phone

(630) 499-7500

Fax

(630) 898-3970

NPI assigned

Mar 21, 2018

Sex

Male

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 MA, IL2 enrollments

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 2

Specialty

Critical Care (Intensivists)Also: Pulmonary Disease

Education

Other, 2018

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Rush University Medical GroupGroup PAC ID 5496658874, 1,521 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Copley Memorial Hospital Hospital, Aurora, IL, CCN 140029

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.

• Rush Medical Group

  • Internal Medicine Physician
  • Chicago, IL
  • NPI 1467312850
  Medicare reassignment
• Rush University Medical Group

  • Internal Medicine Physician
  • Chicago, IL
  • NPI 1093819542
  Care Compare group
• Evans Medical Foundation, Inc.

  • Internal Medicine Physician
  • Boston, MA
  • NPI 1912954124
  NPD

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

• Copley Memorial Hospital, Inc.

  • General Acute Care Hospital
  • Aurora, IL
  • NPI 1295882561
  Care Compare affiliation

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

{
    "created_epoch": "1521590400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1782864000000",
    "number": "1053815225",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2000 OGDEN AVE STE P050",
            "city": "AURORA",
            "state": "IL",
            "postal_code": "605047222",
            "telephone_number": "630-499-2404",
            "fax_number": "630-499-4750"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2040 OGDEN AVE STE 401",
            "city": "AURORA",
            "state": "IL",
            "postal_code": "605047208",
            "telephone_number": "630-499-7500",
            "fax_number": "630-898-3970"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SIGELKO",
        "first_name": "AUGUST",
        "middle_name": "DIDION",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2018-03-21",
        "last_updated": "2026-07-01",
        "certification_date": "2026-07-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RP1001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Pulmonary Disease",
            "state": "IL",
            "license": "036160895",
            "primary": false
        },
        {
            "code": "207RC0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Critical Care Medicine",
            "state": "IL",
            "license": "036160895",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• John David Siegfried, MD
• Dawn Siegler, LMT
• Vivian Sierra
• Sifatur R Sayeed MDSC
• Maria I Sifuentes
• Margaret A Silberman, PH.D
• Silva Chiropractic Clinic PC
• Monica M Silva, D.C.
• Andrea Silver, M.D.
• Lauren Silver

• Critical Care Medicine (Internal Medicine) Physician in Aurora, IL
• Providers in Aurora, IL by specialty
• Critical Care Medicine (Internal Medicine) Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 1, 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.