Robert Nierzwicki, M.D.
NPI 1194985564 · Cardiovascular Disease Physician · Winfield, IL
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Nierzwicki, M.D. is a Cardiovascular Disease Physician provider in Winfield, IL (NPI 1194985564).
Provider details
- NPI number
- 1194985564
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036123450 (IL)
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
18 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
4,494 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) |
|---|---|---|
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 827 | $70 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 760 | $8 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 434 | $134 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 382 | $8 |
| 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 | 339 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 45 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 473 | 159 |
| Atorvastatin Calcium | 423 | 149 |
| Apixabanbrand: Eliquis | 315 | 95 |
| Rosuvastatin Calcium | 305 | 102 |
| Furosemide | 250 | 91 |
| Ezetimibe | 208 | 75 |
| Losartan Potassium | 204 |
Practice location
Mailing address
Additional practice locations (1)
- 25 N Winfield RdWinfield, IL 60190-1295Phone: (630) 232-0280Fax: (630) 232-3895
Registry dates
- Enumerated
- 2008-06-10
- Last updated
- 2024-06-03
- Certified
- 2024-06-03
Frequently asked questions
- What is Robert Nierzwicki's NPI number?
- Robert Nierzwicki's National Provider Identifier (NPI) is 1194985564, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Nierzwicki's specialty?
- Robert Nierzwicki is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Nierzwicki located?
- Robert Nierzwicki's practice location on file with NPPES is 25 N Winfield Rd Ste 500, Winfield, IL 60190-1379.
- What is Robert Nierzwicki's phone number?
- The practice phone number listed in the NPPES registry for Robert Nierzwicki is (630) 232-0280.
- Does Robert Nierzwicki accept Medicare?
- Robert Nierzwicki is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Nierzwicki's NPI active?
- Yes — Robert Nierzwicki's NPI (1194985564) is active in the NPPES registry as of the last update on 2024-06-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.