Chase Rupprecht, DO
NPI 1043738388 · Allergy & Immunology (Internal Medicine) Physician · Chicago, IL
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chase Rupprecht, DO is a Allergy & Immunology (Internal Medicine) Physician provider in Chicago, IL (NPI 1043738388).
Provider details
- NPI number
- 1043738388
- Entity type
- Individual
- Primary specialty
- Allergy & Immunology (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- Yes
- License
- 036175626 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
8 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 25 | 11 |
| Losartan Potassium | 22 | — |
| Atorvastatin Calcium | 19 | — |
| Levothyroxine Sodium | 17 | — |
| Apixabanbrand: Eliquis | 16 | 12 |
| Rosuvastatin Calcium | 15 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-09-07
- Last updated
- 2025-08-07
- Certified
- 2025-08-07
Frequently asked questions
- What is Chase Rupprecht's NPI number?
- Chase Rupprecht's National Provider Identifier (NPI) is 1043738388, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chase Rupprecht's specialty?
- Chase Rupprecht is listed in the NPPES registry with a primary specialty of Allergy & Immunology (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Chase Rupprecht located?
- Chase Rupprecht's practice location on file with NPPES is 251 E Huron St, Chicago, IL 60611-2908.
- What is Chase Rupprecht's phone number?
- The practice phone number listed in the NPPES registry for Chase Rupprecht is (312) 926-2000.
- Does Chase Rupprecht accept Medicare?
- Chase Rupprecht is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chase Rupprecht's NPI active?
- Yes — Chase Rupprecht's NPI (1043738388) is active in the NPPES registry as of the last update on 2025-08-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.