Christopher Berg, DO
NPI 1003816323 · Emergency Medicine Physician · Joliet, IL
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christopher Berg, DO is a Emergency Medicine Physician provider in Joliet, IL (NPI 1003816323).
Provider details
- NPI number
- 1003816323
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- Yes
- License
- 036086664 (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
20 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
470 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 | 329 | $182 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 117 | $125 |
| Critical Care, First 30-74 Minutes99291 | 24 | $220 |
Typical Medicare-allowed amounts for these services range $125–$220 (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 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ondansetronbrand: Ondansetron Odt | 23 | 23 |
| Acetaminophen With Codeinebrand: Acetaminophen-Codeine | 20 | 20 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 16 | 16 |
| Cephalexin | 16 | 16 |
| Prednisone | 15 | 15 |
| Pantoprazole Sodium | 14 | 14 |
| Diclofenac Sodium | 13 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-07-28
- Last updated
- 2007-07-08
Frequently asked questions
- What is Christopher Berg's NPI number?
- Christopher Berg's National Provider Identifier (NPI) is 1003816323, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christopher Berg's specialty?
- Christopher Berg is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Christopher Berg located?
- Christopher Berg's practice location on file with NPPES is 333 Madison St, Joliet, IL 60435-8200.
- What is Christopher Berg's phone number?
- The practice phone number listed in the NPPES registry for Christopher Berg is (815) 725-7133.
- Does Christopher Berg accept Medicare?
- Christopher Berg is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christopher Berg's NPI active?
- Yes — Christopher Berg's NPI (1003816323) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.