Howard O'Neil, M.D.
NPI 1194701730 · Diagnostic Radiology Physician · Downers Grove, IL
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Howard O'Neil, M.D. is a Diagnostic Radiology Physician provider in Downers Grove, IL (NPI 1194701730).
Provider details
- NPI number
- 1194701730
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,145 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 368 | $9 |
| Ct Scan Head Or Brain Without Contrast70450 | 178 | $40 |
| Dxa Bone Density Measurement of Hip, Pelvis, Spine77080 | 177 | $10 |
| X-Ray of Chest, 2 Views71046 | 143 | $10 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 84 | $87 |
| Ct Scan of Upper Spine Without Contrast72125 | 65 | $47 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-12-15
- Last updated
- 2007-07-08
Frequently asked questions
- What is Howard O'Neil's NPI number?
- Howard O'Neil's National Provider Identifier (NPI) is 1194701730, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Howard O'Neil's specialty?
- Howard O'Neil is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Howard O'Neil located?
- Howard O'Neil's practice location on file with NPPES is 3815 Highland Ave, Downers Grove, IL 60515-1500.
- What is Howard O'Neil's phone number?
- The practice phone number listed in the NPPES registry for Howard O'Neil is (630) 275-5900.
- Does Howard O'Neil accept Medicare?
- Howard O'Neil is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Howard O'Neil's NPI active?
- Yes — Howard O'Neil's NPI (1194701730) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.