Alejandro Ruiz
NPI 1184253882 · Emergency Medicine Physician · Chicago, IL
Enrolled with Medicare as Order and Referring Only - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alejandro Ruiz is a Emergency Medicine Physician provider in Chicago, IL (NPI 1184253882).
Provider details
- NPI number
- 1184253882
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 125.077727 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
6 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-04-04
- Last updated
- 2021-05-04
- Certified
- 2021-03-24
Frequently asked questions
- What is Alejandro Ruiz's NPI number?
- Alejandro Ruiz's National Provider Identifier (NPI) is 1184253882, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alejandro Ruiz's specialty?
- Alejandro Ruiz is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Alejandro Ruiz located?
- Alejandro Ruiz's practice location on file with NPPES is 1901 W Harrison St, Chicago, IL 60612-3714.
- What is Alejandro Ruiz's phone number?
- The practice phone number listed in the NPPES registry for Alejandro Ruiz is (312) 864-6000.
- Does Alejandro Ruiz accept Medicare?
- Alejandro Ruiz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alejandro Ruiz's NPI active?
- Yes — Alejandro Ruiz's NPI (1184253882) is active in the NPPES registry as of the last update on 2021-05-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.