James E Ruffer, M.D.

Primary specialty

Radiation Oncology PhysicianTaxonomy code 2085R0001X

License

036099331 Issued in IL

Practice address

801 S Milwaukee Ave
Libertyville, IL 60048-3204

Phone

(847) 990-5910

NPI assigned

Oct 31, 2005

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other identifiers 5

Electronic endpoints 2

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

Radiation Oncology

Education

Northwestern University Feinberg Medical School, 1989

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Radiation Oncology Consultants, LTDGroup PAC ID 0345138509, 19 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Advocate Condell Medical Center Hospital, Libertyville, IL, CCN 140202
• Advocate Illinois Masonic Medical Center Hospital, Chicago, IL, CCN 140182
• Advocate Lutheran General Hospital Hospital, Park Ridge, IL, CCN 140223
• Northshore University Healthsystem - Evanston Hospital Hospital, Evanston, IL, CCN 140010

Merit-based Incentive Payment System (MIPS)

Final score

74.96 of 100Reported as individual

Quality

86.81

Improvement activities

0

Cost

77.34

Merit-based Incentive Payment System (MIPS)

Final score

95.19 of 100Reported as apm

Quality

83.05

Promoting interoperability

100

Improvement activities

40

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

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.

• Radiation Oncology Consultants, LTD

  • Radiation Oncology Physician
  • Oak Brook, IL
  • NPI 1164412417
  Medicare reassignment Care Compare group NPD
• Bonaventure Medical Foundation, LLC

  • Family Medicine Physician
  • Elk Grove Village, IL
  • NPI 1588775647
  NPD (past)

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

• Advocate Condell Medical Center

  • Mobile Mammography Clinic/Center
  • Gurnee, IL
  • NPI 1023262441

  Hospital

  Care Compare affiliation
• Advocate Condell Medical Center

  • General Acute Care Hospital
  • Libertyville, IL
  • NPI 1124272547
  Care Compare affiliation
• Advocate Condell Medical Center

  • Mobile Mammography Clinic/Center
  • Grayslake, IL
  • NPI 1770737199

  Hospital

  Care Compare affiliation
• Advocate Health and Hospitals Corporation

  • General Acute Care Hospital
  • Park Ridge, IL
  • NPI 1164539730
  Care Compare affiliation
• Advocate North Side Health Network

  • General Acute Care Hospital
  • Chicago, IL
  • NPI 1912014564
  Care Compare affiliation
• Endeavor Health Clinical Operations

  • General Acute Care Hospital
  • Evanston, IL
  • NPI 1184670549
  Care Compare affiliation

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

{
    "created_epoch": "1130716800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1786060800000",
    "number": "1679564629",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "700 COMMERCE DR STE 500",
            "city": "OAK BROOK",
            "state": "IL",
            "postal_code": "605238736",
            "telephone_number": "847-698-0600",
            "fax_number": "847-698-0601"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "801 S MILWAUKEE AVE",
            "city": "LIBERTYVILLE",
            "state": "IL",
            "postal_code": "600483204",
            "telephone_number": "847-990-5910"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "27750 W Highway 22",
            "address_2": "Suite G-50",
            "address_purpose": "LOCATION",
            "city": "Barrington",
            "state": "IL",
            "postal_code": "600102379",
            "country_code": "US",
            "telephone_number": "847-842-0300",
            "fax_number": "847-842-0370",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "RUFFER",
        "first_name": "JAMES",
        "middle_name": "E",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-10-31",
        "last_updated": "2026-08-07",
        "certification_date": "2026-08-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0001X",
            "taxonomy_group": "",
            "desc": "Radiology, Radiation Oncology",
            "state": "IL",
            "license": "036099331",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RAILROAD MEDICARE",
            "identifier": "920005580",
            "state": "IL"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICARE PROVIDER NUMBER",
            "identifier": "778401",
            "state": "IL"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "036099331",
            "state": "IL"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICARE PROVIDER NUMBER",
            "identifier": "558620",
            "state": "IL"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RAILROAD MEDICARE",
            "identifier": "920005272",
            "state": "IL"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "jruffer220437@direct.myadvocateaurora.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "900 W Nelson St",
            "city": "Chicago",
            "state": "IL",
            "country_code": "US",
            "postal_code": "606576704",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicfhir.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/",
            "affiliation": "N",
            "address_1": "900 W Nelson St",
            "city": "Chicago",
            "state": "IL",
            "country_code": "US",
            "postal_code": "606576704",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Raed Abdallah Rtail, SA-C, RSA
• Natalie Rubin, M.S., CCC-A
• Adam M Rubinstein, MD
• Paula Rudnik, M.D.
• Heather A Rueben, FNP-C
• Rush-Select Holdings, LLC.
• Rush-Select Holdings, LLC.
• Meggan L Rutledge, D.D.S.
• Ryan T Porter
• Victoria Anna Rzucidlo, PA-C

• Radiation Oncology Physician in Libertyville, IL
• Providers in Libertyville, IL by specialty
• Radiation Oncology Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 7, 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.