NPIMap

Individual provider Active NPI

Howard K. O'Neil, M.D.

  • Diagnostic Radiology Physician
  • Downers Grove, IL
National Provider Identifier
1194701730
Registry record updated Jul 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Diagnostic Radiology PhysicianTaxonomy code 2085R0202X
Practice address
3815 Highland Ave
Radiology Department
Downers Grove, IL 60515-1500
Phone
(630) 275-5900
NPI assigned
Dec 15, 2005
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 13, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Diagnostic Radiology Physician 2085R0202X IL Primary

Addresses

Primary practice location

3815 Highland Ave
Radiology Department
Downers Grove, IL 60515-1500

Mailing address

520 E 22ND St
Lombard, IL 60148-6110
Phone (630) 874-2542

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in IL
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20040127000410 IL Practitioner - Diagnostic RadiologyPractitioner - Interventional Radiology 6305748575 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Diagnostic RadiologyAlso: Interventional Radiology
Education
University of Wisconsin School of Medicine, 1987
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Suburban Radiologists, S.C. 22 clinicians

Practice addresses (Care Compare)

120 N Oak St
Hinsdale, IL 60521-3829
Phone (630) 856-9000

5101 Willow Springs Rd
La Grange, IL 60525-2600
Phone (708) 245-9000

701 Winthrop Ave
Glendale Heights, IL 60139-1405
Phone (630) 545-8000

Hospital & facility affiliations

  • Uchicago Medicine Adventhealth Hinsdale Hospital, Hinsdale, IL, CCN 140122
  • Uchicago Medicine Adventhealth Bolingbrook Hospital, Bolingbrook, IL, CCN 140304
  • Uchicago Medicine Adventhealth la Grange Hospital, La Grange, IL, CCN 140065
  • Edward Hospital Hospital, Naperville, IL, CCN 140231
  • Loyola University Medical Center Hospital, Maywood, IL, CCN 140276

Merit-based Incentive Payment System (MIPS)

Final score
100 of 100Reported as group
Quality
100
Improvement activities
40

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

Practice roles

OrganizationSpecialtyStatusNew patients
Suburban Radiologists, S.C. Diagnostic Radiology CurrentSince Oct 1, 2006 Accepting new patients
Naperville Radiologists, SC Diagnostic Radiology Past Accepting new patients
Radiologists of Dupage SC Diagnostic Radiology Past Accepting new patients

Locations

500 Remington Blvd
Bolingbrook, IL 60440
Phone (630) 312-5000

630 E North Ave
Carol Stream, IL 60188
Phone (630) 458-5300

1446 Momentum Pl
Chicago, IL 60689

6084 S Archer Ave
Ste 102
Chicago, IL 60638
Phone (773) 767-2461

701 Winthrop Ave
Glendale Hts, IL 60139
Phone (630) 312-2000

1 Salt Creek Ln
Hinsdale, IL 60521
Phone (630) 286-5500

908 N Elm St
Hinsdale, IL 60521
Phone (630) 325-3310

5101 Willow Springs Rd
Lagrange Hlds, IL 60525
Phone (708) 245-4073

2000 Spring Rd
Ste 200
Oak Brook, IL 60523
Phone (630) 472-8810

120 N Oak St
Oak Brook Mall, IL 60521
Phone (630) 856-6700

15720 S Route 59
Plainfield, IL 60544
Phone (630) 312-3301

2434 Wolf Rd
Westchester, IL 60154
Phone (630) 856-6800

6311 S Cass Ave
Westmont, IL 60559
Phone (630) 323-5214

545 Plainfield Rd
Willowbrook, IL 60527
Phone (630) 269-2886

2363 63rd St
Woodridge, IL 60517
Phone 22477355880000

Organizations & group practices 3

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.

Hospital & facility affiliations 8

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

NPI Registry JSON

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

{
    "created_epoch": "1134604800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1194701730",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "520 E 22ND ST",
            "city": "LOMBARD",
            "state": "IL",
            "postal_code": "601486110",
            "telephone_number": "630-874-2542",
            "fax_number": "630-874-2642"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3815 HIGHLAND AVE",
            "address_2": "RADIOLOGY DEPARTMENT",
            "city": "DOWNERS GROVE",
            "state": "IL",
            "postal_code": "605151500",
            "telephone_number": "630-275-5900"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "O'NEIL",
        "first_name": "HOWARD",
        "middle_name": "K.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-12-15",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "IL",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Downers Grove, IL

Sources for this page

Verify at the official NPI Registry.