Summary

Dr. Mark Demeo is a gastroenterologist who brings over four decades of medical expertise to his practice. 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 experience treating digestive disorders, Dr. Demeo has developed extensive knowledge in managing complex gastrointestinal conditions. He is fluent in both Spanish and English, allowing him to connect with a diverse patient population.

Dr. Demeo practices at Rush University Medical Center with locations in Oak Brook and Chicago, Illinois. His clinical focus includes treating common digestive issues such as diarrhea, gastritis, and gastroesophageal reflux disease. He performs essential diagnostic procedures including colonoscopy and lower gastrointestinal endoscopy to help identify and address intestinal concerns. Patients have rated Dr. Demeo 4.1 out of 5 stars on average, reflecting their confidence in his care.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 4.1
  • 43 years of experience
  • 24 insurance plans accepted
  • speaks Spanish, English
  • 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. Yogesh Patel, DODr. Jennifer Spanier-Stiasny, DODr. Jonathan Rosenberg, MD
GastroenterologyGastroenterologyGastroenterologyGastroenterology
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
4.1 
3.8 
4.5 
3.5 
43 Years of Experience 22 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks Spanish, English Speaks English Speaks English Speaks Spanish, English
Oak Brook , ILSt Charles , ILHighland Park , ILGurnee , IL
Med School: Rutgers Robert Wood Johnson Medical School Med School: Chicago College Of Osteopathic Medicine Med School: Kansas City University of Medicine and Biosciences Med School: University of Illinois Chicago of 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 active medical license in the state of Illinois.

Medical License

Medical Doctor with an active medical license in the state of Illinois that expires 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

How can I make an appointment with Mark Demeo?
You can find contact information for Mark Demeo here on Vitals.
Is Mark Demeo accepting new patients?
Mark Demeo is accepting new patients on Vitals. View Mark Demeo's profile on Vitals to make an appointment.
What languages does Mark Demeo speak?
Mark Demeo speaks Spanish and English.
Does Mark Demeo accept my insurance?
You can see the insurance plans that Mark Demeo accepts on their Vitals profile.
Which hospitals is Mark Demeo affiliated with?
Mark Demeo is affiliated with Rush University Medical Center.

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