Summary

Dr. Katherine Jelinek is a gastroenterologist with 26 years of experience helping patients with digestive health concerns. She earned her medical degree from the University of Texas Southwestern Medical School and completed her residency at the University of Illinois College of Medicine at Chicago in 2003. Dr. Jelinek furthered her training with a fellowship at the University of Illinois College of Medicine at Chicago in 2005, specializing in gastroenterology. She is fluent in both English and Spanish.

Dr. Jelinek practices at Northwestern Medicine Delnor Hospital and sees patients at Northwestern Medical Group locations in Winfield, Geneva, and Naperville, Illinois. She specializes in treating colon polyps and hemorrhoids. Her expertise includes performing pathology tests and surgical pathology procedures. Patients have given Dr. Jelinek an average rating of 3.8 out of 5 stars on Vitals.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 3.8
  • 26 years of experience
  • 22 insurance plans accepted
  • speaks English, Spanish
  • University of Illinois College of Medicine at Chicago
  • 6 written reviews
  • 2 specialties
  • 11 areas of expertise
  • 2 board certifications
  • 1 hospital affiliation
  • 3 office locations
  • Female

Office Locations

Dr. Katherine A. Jelinek has 3 locations

Northwestern Medical Group

25 N Winfield Rd Ste 420Winfield, IL 60190

Northwestern Medical Group

302 Randall Rd Ste 105Geneva, IL 60134

Northwestern Medical Group

636 Raymond Dr Ste 204Naperville, IL 60563

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Dr. Katherine A. Jelinek, MDJan Seiler, APRNDr. Yogesh Patel, DODr. Jeffery Victor, DO
GastroenterologyGastroenterologyGastroenterologyGastroenterology
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
3.8 
3.8 
4.4 
26 Years of Experience
Virtual Visit Available Virtual Visit Available No Virtual Visit Option No Virtual Visit Option
Speaks English, Spanish Speaks English Speaks English Speaks English
Winfield , ILMontgomery , ALSt Charles , ILSt Charles , IL
Med School: University of Texas Southwestern Medical School Med School: Georgia State University Med School: Chicago College Of Osteopathic Medicine Med School: Chicago College of Osteopathic Medicine
Current Profile
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Insurance Plans Accepted by Dr. Katherine A. Jelinek

  • Accepts Medicare
  • Accepts Medicaid
  • Aetna
  • Amita Health
  • Blue Cross Blue Shield of Illinois
  • Blue Cross Blue Shield of Michigan
  • CHAMPVA
  • Cigna
  • Humana
  • Humana - Medicare (Advantage HMO)
  • Medica
  • Medicaid - Medicaid
  • Medicaid - Medicaid (Managed)
  • Medicare
  • Medicare - Medicare
  • Meridian Health Plan
  • Meritain Health
  • Molina Healthcare - Medicaid (Managed)
  • Mutual of Omaha
  • North Shore LIJ CareConnect
  • North Shore LIJ CareConnect - IPA
  • Oscar Health Insurance
  • Tricare
  • UnitedHealthcare

Medical Specialties

Dr. Katherine A. Jelinek has the following 2 specialties

Specialty Expertise

Dr. Katherine A. Jelinek has the following 11 areas of expertise

  • Abdominal Pain
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Acid Reflux Disease (GERD)
  • Celiac Disease
  • Colonoscopy
  • Constipation
  • Gastroenterologist
  • Hemorrhoids
  • Hepatitis C
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis

Certifications, License, & Education

26 Years Experience

MEDICAL LICENSE

Medical Doctor, Illinois, 2026, Active

EDUCATION & TRAINING

Fellowship

University of Illinois College of Medicine at Chicago2005

Residency

University of Illinois College of Medicine at Chicago2003

Medical School

University of Texas Southwestern Medical SchoolGraduated in 2000

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Frequently Asked Questions

Does Dr. Katherine Jelinek accept my insurance?
You can see the insurance plans that Dr. Katherine Jelinek accepts on their Vitals profile.
Is Dr. Katherine Jelinek accepting new patients?
Dr. Katherine Jelinek is accepting new patients on Vitals. View Dr. Katherine Jelinek's profile on Vitals to make an appointment.
How can I make an appointment with Dr. Katherine Jelinek?
You can find contact information for Dr. Katherine Jelinek here on Vitals.
Which hospitals is Dr. Katherine Jelinek affiliated with?
Dr. Katherine Jelinek is affiliated with Northwestern Medicine Delnor Hospital.
What languages does Dr. Katherine Jelinek speak?
Dr. Katherine Jelinek speaks English and Spanish.

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