This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.

Doctors / IL

KATARZYNA A OLEJNICZAK, MD

FAMILY PRACTICE

Graduated: 1986

NPI: 1881697472

Practice Locations (2)

ADVOCATE HEALTH AND HOSPITALS CORPORATION

214 MCHENRY RD

BUFFALO GROVE, IL 600896748

8474591160

ADVOCATE HEALTH AND HOSPITALS CORPORATION

1754 W GOLF RD

MOUNT PROSPECT, IL 600564071

8475936600

Source: CMS National Downloadable File, September 2026.

KATARZYNA OLEJNICZAK, MD | HealthCareAtlasUSA