William Reilly, M.D.
NPI 1205846516 · Interventional Cardiology Physician · Waterloo, IL
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Reilly, M.D. is a Interventional Cardiology Physician provider in Waterloo, IL (NPI 1205846516).
Provider details
- NPI number
- 1205846516
- Entity type
- Individual
- Primary specialty
- Interventional Cardiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036-065044 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
2,277 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) |
|---|---|---|
| Evaluation of Cardiac Rhythm Monitor System, Remote Up to 30 Days93298 | 450 | $97 |
| Technetium Tc-99m Tetrofosmin, Diagnostic, Per Study DoseA9502 | 358 | $472 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 229 | $185 |
| Exercise Or Drug-Induced Heart Stress Test With Electrocardiogram (ecg) With Supervision By Physician93016 | 195 | $21 |
| Exercise Or Drug-Induced Heart Stress Test With Electrocardiogram (ecg) With Review By Physician93018 | 195 | $14 |
| Exercise Or Drug-Induced Heart Stress Test With Electrocardiogram (ecg) |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clopidogrel Bisulfatebrand: Clopidogrel | 35 | 11 |
| Metoprolol Succinate | 22 | — |
| Apixabanbrand: Eliquis | 17 | — |
| Rosuvastatin Calcium | 17 | — |
| Losartan Potassium | 16 | — |
| Atorvastatin Calcium | 13 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$236 across 4 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
Additional practice locations (1)
- 1028 S Kirkwood RdSaint Louis, MO 63122-7222Phone: (618) 939-4200Fax: (618) 939-4256
Registry dates
- Enumerated
- 2006-08-09
- Last updated
- 2023-01-31
- Certified
- 2023-01-31
Frequently asked questions
- What is William Reilly's NPI number?
- William Reilly's National Provider Identifier (NPI) is 1205846516, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Reilly's specialty?
- William Reilly is listed in the NPPES registry with a primary specialty of Interventional Cardiology Physician (Allopathic & Osteopathic Physicians).
- Where is William Reilly located?
- William Reilly's practice location on file with NPPES is 509 Hamacher St Ste 204, Waterloo, IL 62298-1592.
- What is William Reilly's phone number?
- The practice phone number listed in the NPPES registry for William Reilly is (618) 939-4200.
- Does William Reilly accept Medicare?
- William Reilly is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Reilly's NPI active?
- Yes — William Reilly's NPI (1205846516) is active in the NPPES registry as of the last update on 2023-01-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.