Iulia O'Neill, MD
NPI 1255381927 · Family Medicine Physician · Bloomingdale, IL
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Iulia O'Neill, MD is a Family Medicine Physician provider in Bloomingdale, IL (NPI 1255381927).
Provider details
- NPI number
- 1255381927
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 36109944 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,210 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 481 | $131 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 146 | $94 |
| Hemoglobin A1c Level83036 | 124 | $9 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 94 | $133 |
| Administration of Influenza Virus VaccineG0008 | 61 | $33 |
| Urinalysis, Manual Test81002 | 57 | $3 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 117 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 378 | 93 |
| Atorvastatin Calcium | 314 | 81 |
| Levothyroxine Sodium | 297 | 70 |
| Amlodipine Besylate | 263 | 64 |
| Pantoprazole Sodium | 215 | 78 |
| Losartan Potassium | 209 | 48 |
| Lisinopril |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$166 across 8 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-11
- Last updated
- 2021-03-24
- Certified
- 2021-03-24
Frequently asked questions
- What is Iulia O'Neill's NPI number?
- Iulia O'Neill's National Provider Identifier (NPI) is 1255381927, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Iulia O'Neill's specialty?
- Iulia O'Neill is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Iulia O'Neill located?
- Iulia O'Neill's practice location on file with NPPES is 303 E Army Trail Rd, Bloomingdale, IL 60108-2169.
- What is Iulia O'Neill's phone number?
- The practice phone number listed in the NPPES registry for Iulia O'Neill is (630) 545-8300.
- Does Iulia O'Neill accept Medicare?
- Iulia O'Neill is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Iulia O'Neill's NPI active?
- Yes — Iulia O'Neill's NPI (1255381927) is active in the NPPES registry as of the last update on 2021-03-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.