Summary

Dr. Mark Demeo is a gastroenterologist who specializes in diagnosing and treating disorders of the digestive system. He earned his medical degree from Rutgers Robert Wood Johnson Medical School and completed his residency training at Michael Reese Hospital Medical Center. With 43 years of clinical experience, Dr. Demeo has built extensive expertise in managing complex gastrointestinal conditions. He is fluent in both English and Spanish.

Dr. Demeo practices at Rush University Medical Center and sees patients at locations in Oak Brook and Chicago, Illinois. He treats patients with digestive concerns including diarrhea, gastritis, and gastroesophageal reflux disease. His procedural expertise includes performing colonoscopies and lower gastrointestinal endoscopies to diagnose conditions. Dr. Demeo also performs laparoscopic procedures when surgical intervention is needed. Patients have given him an average rating of 4.1 out of 5 stars on Vitals.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 4.1
  • 43 years of experience
  • 24 insurance plans accepted
  • speaks English, Spanish
  • Michael Reese Hospital Medical Center
  • 7 written reviews
  • 2 specialties
  • 12 areas of expertise
  • 2 board certifications
  • 1 hospital affiliation
  • 2 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Mark T. Demeo has 2 locations

Rush Digestive Diseases - Oak Brook

2011 York Rd Ste 5500Oak Brook, IL 60523

Rush Digestive Diseases - Chicago

1520 W Harrison St # 8Chicago, IL 60607

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Mark T. Demeo, MDDr. Darran Moxon, MDDr. Rahul Julka, MDDr. Yogesh Patel, DO
GastroenterologyGastroenterologyGastroenterologyGastroenterology
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
4.1 
4.3 
3.8 
43 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English, Spanish Speaks English Speaks English Speaks English
Oak Brook , ILSt Charles , ILHomewood , ILSt Charles , IL
Med School: Rutgers Robert Wood Johnson Medical School Med School: University of Illinois Med School: Loyola University Medical Center Med School: Chicago College Of Osteopathic Medicine
Current Profile
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Insurance Plans Accepted by Mark T. Demeo

  • AARP
  • Aetna
  • Aetna Better Health - Medicare
  • Ascension Health
  • Ascension Health - PPO
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield - Medicaid
  • Blue Cross Blue Shield - Medicare
  • Blue Cross Blue Shield - PPO
  • Blue Cross Blue Shield of Illinois
  • Cigna
  • First Health (Coventry Health Care)
  • Humana
  • Medicaid - Medicaid
  • Medicaid - Medicaid (HMO Plans)
  • Medicaid - Medicaid (Managed)
  • Medicare
  • Medicare - Medicare
  • Meridian Health Plan
  • Meridian Health Plan - Medicaid (Managed)
  • Meritain Health
  • Tricare
  • UnitedHealthcare
  • Zing Health - Medicare

Medical Specialties

Mark T. Demeo has the following 2 specialties

Specialty Expertise

Mark T. Demeo has the following 12 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)
  • Obesity
  • Ulcerative Colitis

Certifications, License, & Education

43 Years Experience

Mark T. Demeo holds an expired medical license in the state of Illinois.

Medical License

Medical Doctor with an expired medical license in the state of Illinois that expired in 2026.

Education & Training

Residency

Completed their residency at Michael Reese Hospital Medical Center.

Medical School

Graduated from Rutgers Robert Wood Johnson Medical School in 1983.

NPI Number

Mark T. Demeo's NPI number is 1972549327.

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Frequently Asked Questions

Does Mark Demeo accept virtual/telehealth appointments?
Mark Demeo has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Where is Mark Demeo's office located?
Mark Demeo's office is located at 2011 York Rd Ste 5500, Oak Brook, IL, 60523.
Which hospitals is Mark Demeo affiliated with?
Mark Demeo is affiliated with Rush University Medical Center.
What languages does Mark Demeo speak?
Mark Demeo speaks English and Spanish.
Does Mark Demeo accept my insurance?
You can see the insurance plans that Mark Demeo accepts on their Vitals profile.

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