Kathleen Wren Phelan, M.D.

Primary specialty

Hematology (Internal Medicine) PhysicianTaxonomy code 207RH0000X

License

036121454 Issued in IL

Practice address

1520 W Harrison St
Chicago, IL 60607-3106

Phone

(312) 942-5904

NPI assigned

Jul 14, 2008

Sex

Female

Sole proprietor

Yes

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

Specialties & licenses 2

Addresses

Other names 1

• Dr. Kathleen Benedicta Wren Former name

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

HematologyAlso: Medical Oncology

Education

Other, 2005

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

• Rush University Medical Center Hospital, Chicago, IL, CCN 140119
• Rush Oak Park Hospital Hospital, Oak Park, IL, CCN 140063
• Loyola University Medical Center Hospital, Maywood, IL, CCN 140276

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: kphelan30855@direct.luhs.org

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 University Medical Group

  • Internal Medicine Physician
  • Chicago, IL
  • NPI 1093819542
  Medicare reassignment Care Compare group NPD
• Loyola University Medical Center

  • General Acute Care Hospital
  • Maywood, IL
  • NPI 1376521575
  NPD
• Rush University Medical Center

  • Diagnostic Radiology Physician
  • Chicago, IL
  • NPI 1184269425
  NPD

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

• Loyola University Medical Center

  • General Acute Care Hospital
  • Maywood, IL
  • NPI 1376521575
  Care Compare affiliation
• Loyola University Medical Center

  • General Acute Care Hospital
  • Tinley Park, IL
  • NPI 1427752013
  Care Compare affiliation
• Rush Oak Park Hospital Inc

  • General Acute Care Hospital
  • Oak Park, IL
  • NPI 1558391706
  Care Compare affiliation
• Rush University Medical Center

  • Children's Hospital
  • Chicago, IL
  • NPI 1801908728
  Care Compare affiliation
• Rush University Medical Center

  • General Acute Care Hospital
  • Chicago, IL
  • NPI 1932213600
  Care Compare affiliation

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

{
    "created_epoch": "1215993600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1760054400000",
    "number": "1932363447",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1520 W HARRISON ST",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606073106",
            "telephone_number": "312-942-5904"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1520 W HARRISON ST",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606073106",
            "telephone_number": "312-942-5904"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2160 S 1st Ave",
            "address_2": "Cardinal Bernardin Cancer Center",
            "address_purpose": "LOCATION",
            "city": "Maywood",
            "state": "IL",
            "postal_code": "601533328",
            "country_code": "US",
            "telephone_number": "708-216-9000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "PHELAN",
        "first_name": "KATHLEEN",
        "middle_name": "WREN",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2008-07-14",
        "last_updated": "2025-10-10",
        "certification_date": "2025-10-10",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RH0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Hematology",
            "state": "IL",
            "license": "036121454",
            "primary": true
        },
        {
            "code": "207RX0202X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Medical Oncology",
            "state": "IL",
            "license": "036121454",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "KATHLEEN",
            "last_name": "WREN",
            "middle_name": "BENEDICTA",
            "prefix": "DR.",
            "credential": "M.D.",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Pharmco Pharmacy LLC
• Mohan Phatak, M.D.
• Nayana Uday Phatak, M.D.
• Andreina Phelan
• Bernadette Arcilla Phelan, MS CCC SLP
• Mary Kathleen Phelan, PT, DPT
• Christine Anne Phelps
• Clare Phelps, APN
• Joliana Phelps
• Jonna L Phelps, LCPC

• Hematology (Internal Medicine) Physician in Chicago, IL
• Providers in Chicago, IL by specialty
• Hematology (Internal Medicine) Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 10, 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.