Christopher Jeziorkowski, M.D.
NPI 1912347402 · Emergency Medicine Physician · Naperville, IL
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christopher Jeziorkowski, M.D. is a Emergency Medicine Physician provider in Naperville, IL (NPI 1912347402).
Provider details
- NPI number
- 1912347402
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036.140578 (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
12 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
681 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 246 | $180 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 222 | $8 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 148 | $124 |
| Critical Care, First 30-74 Minutes99291 | 37 | $217 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 28 | $73 |
Typical Medicare-allowed amounts for these services range $8–$217 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 43 | 43 |
| Methylprednisolone | 26 | 26 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 24 | 24 |
| Prednisone | 18 | 17 |
| Ondansetronbrand: Ondansetron Odt | 18 | 17 |
| Acetaminophen With Codeinebrand: Acetaminophen-Codeine | 11 | 11 |
| Albuterol Sulfate |
Practice location
Mailing address
Additional practice locations (1)
- 120 N Oak StHinsdale, IL 60521-3829Phone: (708) 684-5375
Registry dates
- Enumerated
- 2013-06-27
- Last updated
- 2025-12-03
- Certified
- 2025-12-03
Frequently asked questions
- What is Christopher Jeziorkowski's NPI number?
- Christopher Jeziorkowski's National Provider Identifier (NPI) is 1912347402, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christopher Jeziorkowski's specialty?
- Christopher Jeziorkowski is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Christopher Jeziorkowski located?
- Christopher Jeziorkowski's practice location on file with NPPES is 801 S Washington St, Naperville, IL 60540-7430.
- What is Christopher Jeziorkowski's phone number?
- The practice phone number listed in the NPPES registry for Christopher Jeziorkowski is (630) 527-3000.
- Does Christopher Jeziorkowski accept Medicare?
- Christopher Jeziorkowski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christopher Jeziorkowski's NPI active?
- Yes — Christopher Jeziorkowski's NPI (1912347402) is active in the NPPES registry as of the last update on 2025-12-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.