William O'Rourke, MD
NPI 1013013119 · Internal Medicine Physician · Lombard, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William O'Rourke, MD is a Internal Medicine Physician provider in Lombard, IL (NPI 1013013119).
Provider details
- NPI number
- 1013013119
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 36-096382 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,869 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 811 | $135 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 270 | $139 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 266 | $17 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 137 | $83 |
| Administration of Influenza Virus VaccineG0008 | 79 | $33 |
| Hospital Discharge Day Management, More Than 30 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 131 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 515 | 139 |
| Atorvastatin Calcium | 376 | 115 |
| Levothyroxine Sodium | 308 | 77 |
| Pantoprazole Sodium | 259 | 72 |
| Rosuvastatin Calcium | 246 | 64 |
| Metoprolol Succinate | 240 | 76 |
| Lisinopril |
Practice location
Mailing address
Additional practice locations (1)
- 172 E Schiller StElmhurst, IL 60126Phone: (331) 221-0000Fax: (331) 221-2312
Registry dates
- Enumerated
- 2006-09-15
- Last updated
- 2025-07-28
- Certified
- 2025-07-28
Frequently asked questions
- What is William O'Rourke's NPI number?
- William O'Rourke's National Provider Identifier (NPI) is 1013013119, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William O'Rourke's specialty?
- William O'Rourke is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William O'Rourke located?
- William O'Rourke's practice location on file with NPPES is 454 E Roosevelt Rd, Lombard, IL 60148-4630.
- What is William O'Rourke's phone number?
- The practice phone number listed in the NPPES registry for William O'Rourke is (630) 387-6424.
- Does William O'Rourke accept Medicare?
- William O'Rourke is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William O'Rourke's NPI active?
- Yes — William O'Rourke's NPI (1013013119) is active in the NPPES registry as of the last update on 2025-07-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.