Olwen M Hahn, M.D.

Primary specialty

Hematology & Oncology PhysicianTaxonomy code 207RH0003X

Practice address

5841 S Maryland Ave
MC 2115
Chicago, IL 60637-1447

Phone

(773) 702-5381

Fax

(773) 702-3163

NPI assigned

Mar 27, 2007

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 1

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

Hematology/OncologyAlso: Internal Medicine

Education

Emory University School of Medicine, 2001

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

University of ChicagoGroup PAC ID 7719899426, 1,674 clinicians

The University of Chicago Medical CenterGroup PAC ID 7618880766, 907 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• The University of Chicago Medical Center Hospital, Chicago, IL, CCN 140088

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: ohahnmd15211@uchospital.direct-ci.com

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.

• The University of Chicago Medical Center

  • General Acute Care Hospital
  • Chicago, IL
  • NPI 1033218128
  Medicare reassignment Care Compare group NPD
• University of Chicago

  • Multi-Specialty Clinic/Center
  • Chicago, IL
  • NPI 1821048786
  Medicare reassignment Care Compare group NPD
• The University of Chicago Medical Center

  • Community/Retail Pharmacy
  • Calumet City, IL
  • NPI 1255895678
  NPD

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

• The University of Chicago Medical Center

  • General Acute Care Hospital
  • Chicago, IL
  • NPI 1508956509
  Care Compare affiliation

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

{
    "created_epoch": "1174953600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1183852800000",
    "number": "1992823611",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5841 S MARYLAND AVE",
            "address_2": "MC 2115",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606371447",
            "telephone_number": "773-702-5381"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5841 S MARYLAND AVE",
            "address_2": "MC 2115",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606371447",
            "telephone_number": "773-702-5381",
            "fax_number": "773-702-3163"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HAHN",
        "first_name": "OLWEN",
        "middle_name": "M",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2007-03-27",
        "last_updated": "2007-07-08",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RH0003X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology & Oncology",
            "state": "IL",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Emily Ann Hawley Hahn, DO
• Eugenia L. Hahn, M.D.
• Grant Richard Hahn, M.D.
• Howard S. Hahn, M.D.
• Katherine Hahn
• Sarah Fisher Hahn, MA
• Toni Anne Hahn, DO
• Yoon S Hahn, M.D.
• Allison Jean Hahr, M.D.
• Stephanie Hai Pineda

• Hematology & Oncology Physician in Chicago, IL
• Providers in Chicago, IL by specialty
• Hematology & Oncology Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 8, 2007; 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.