Daniel Izewski
NPI 1134749294 · Physician Assistant · Downers Grove, IL
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Daniel Izewski is a Physician Assistant provider in Downers Grove, IL (NPI 1134749294).
Provider details
- NPI number
- 1134749294
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Male
- Sole proprietor
- Yes
- License
- 085.008027 (IL)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Ambulatory Health Care Facilities
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
6 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
364 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 | 66 | $113 |
| Detection Test By Immunoassay With Direct Visual Observation for Influenza Virus87804 | 60 | $16 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 52 | $80 |
| Detection Test By Immunoassay With Direct Visual Observation for Severe Acute Respiratory Syndrome Coronavirus 2 (covid-19)87811 | 42 | $41 |
| X-Ray of Chest, 2 Views71046 | 34 | $27 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 42 | 42 |
| Doxycycline Hyclate | 29 | 29 |
| Azithromycin | 25 | 24 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 16 | 16 |
| Cephalexin | 14 | 14 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-04-19
- Last updated
- 2020-10-30
- Certified
- 2020-10-30
Frequently asked questions
- What is Daniel Izewski's NPI number?
- Daniel Izewski's National Provider Identifier (NPI) is 1134749294, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Daniel Izewski's specialty?
- Daniel Izewski is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Daniel Izewski located?
- Daniel Izewski's practice location on file with NPPES is 3908 Elm St, Downers Grove, IL 60515-2119.
- What is Daniel Izewski's phone number?
- The practice phone number listed in the NPPES registry for Daniel Izewski is (639) 391-8322.
- Does Daniel Izewski accept Medicare?
- Daniel Izewski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Daniel Izewski's NPI active?
- Yes — Daniel Izewski's NPI (1134749294) is active in the NPPES registry as of the last update on 2020-10-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.