Irena Chizhik, M.D.
NPI 1275501579 · Internal Medicine Physician · Skokie, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Irena Chizhik, M.D. is a Internal Medicine Physician provider in Skokie, IL (NPI 1275501579).
Provider details
- NPI number
- 1275501579
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 036096654 (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
20 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
- 2006-03-10
- Last updated
- 2011-07-26
Frequently asked questions
- What is Irena Chizhik's NPI number?
- Irena Chizhik's National Provider Identifier (NPI) is 1275501579, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Irena Chizhik's specialty?
- Irena Chizhik is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Irena Chizhik located?
- Irena Chizhik's practice location on file with NPPES is 9555 Gross Point Rd, Skokie, IL 60076-1356.
- What is Irena Chizhik's phone number?
- The practice phone number listed in the NPPES registry for Irena Chizhik is (847) 679-3411.
- Does Irena Chizhik accept Medicare?
- Irena Chizhik is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Irena Chizhik's NPI active?
- Yes — Irena Chizhik's NPI (1275501579) is active in the NPPES registry as of the last update on 2011-07-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.