Summary

Dr. Samuel Castillo specializes in gastroenterology, internal medicine, and colorectal surgery, bringing 23 years of clinical experience to his practice. He earned his medical degree from the University of Illinois at Chicago College of Medicine and completed his residency at the prestigious Mayo Clinic College of Medicine in Rochester, Minnesota. Dr. Castillo pursued advanced fellowship training at both the Phoenix VA Health Care System and Banner Good Samaritan Medical Center in Phoenix, Arizona, where he received specialized certification in ERCP (endoscopic retrograde cholangiopancreatography) and advanced endoscopy techniques. He is fluent in both English and Spanish, allowing him to serve diverse patient populations.

Dr. Castillo practices across multiple locations in Chicago, Illinois, and maintains affiliations with several respected healthcare institutions including Saint Mary of Nazareth Hospital, Ascension Saint Alexius, Ascension Saint Elizabeth Medical Center, Ascension Saint Joseph Chicago, and Humboldt Park Health. His clinical expertise encompasses the treatment of common digestive conditions such as colon polyps, GERD, and esophagitis. He regularly performs essential diagnostic and therapeutic procedures including colonoscopies and both upper and lower gastrointestinal endoscopies to help patients maintain optimal digestive health. Patients rate Dr. Castillo 3.4 out of 5 stars for his care and expertise.
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Quick Facts

  • accepting new patients
  • 3.4
  • 23 years of experience
  • speaks English, Spanish
  • Phoenix VA Health Care System
  • 4 written reviews
  • 3 specialties
  • 8 areas of expertise
  • 3 board certifications
  • 5 hospital affiliations
  • 4 office locations
  • Male

Office Locations

Dr. Samuel F Castillo, JR has 4 locations

Chicago Gastroenterology

2222 W Division St Ste 235Chicago, IL 60622
Mon9:00 am - 5:00 pm
Tue9:00 am - 5:00 pm
Wed9:00 am - 5:00 pm
Thu9:00 am - 5:00 pm
Fri9:00 am - 5:00 pm
SatClosed
SunClosed

Ascension Saint Joseph Chicago

2900 N Lake Shore DrChicago, IL 60657

Ascension Saint Mary

2233 W Division StChicago, IL 60622

Ascension Saint Alexius

1555 N Barrington RdHoffman Estates, IL 60169

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Dr. Samuel F Castillo, JR, MDDr. Kevin Liebovich, MDDr. Daksesh Patel, DODr. Lawrence Gluskin, MD
GastroenterologyGastroenterologyGastroenterologyGastroenterology
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
3.4 
4.1 
4.1 
3.4 
23 Years of Experience 27 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
Chicago , ILGurnee , ILChicago , ILChicago , IL
Med School: University of Illinois College of Medicine, Rockford IL Med School: Loyola University of Chicago, Stritch School of Medicine Med School: Lake Erie College of Osteopathic Medicine Med School: University of Illinois College of Medicine
Current Profile
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Insurance Plans Accepted by Dr. Samuel F Castillo, JR

Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.

Medical Specialties

Dr. Samuel F Castillo, JR has the following 3 specialties

Specialty Expertise

Dr. Samuel F Castillo, JR has the following 8 areas of expertise

  • Capsule Endoscopy
  • Colonoscopy
  • Colorectal Surgery
  • ERCP
  • Internal Medicine
  • Sigmoidoscopy
  • Therapeutic Endoscopy
  • Upper Endoscopy (EGD)

Certifications, License, & Education

23 Years Experience

MEDICAL LICENSE

Medical Doctor, Illinois, 2026, Active

EDUCATION & TRAINING

Fellowship

Phoenix VA Health Care System
Banner Good Samaritan Medical Center, Phoenix, AZ
Advanced Endoscopy training including ERCP certification

Residency

Mayo Clinic College of Medicine, Rochester MN

Medical School

University of Illinois College of Medicine, Rockford IL
University Of Illinois At Chicago College Of MedicineGraduated in 2003

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Frequently Asked Questions

Which hospitals is Dr. Samuel Castillo, JR affiliated with?
Dr. Samuel Castillo, JR is affiliated with Saint Mary Of Nazareth Hospital, Ascension Saint Alexius, Ascension Saint Elizabeth Medical Center, Ascension Saint Joseph Chicago, and Humboldt Park Health.
How can I make an appointment with Dr. Samuel Castillo, JR?
You can find contact information for Dr. Samuel Castillo, JR here on Vitals.
Does Dr. Samuel Castillo, JR accept my insurance?
You can see the insurance plans that Dr. Samuel Castillo, JR accepts on their Vitals profile.
Where is Dr. Samuel Castillo, JR's office located?
Dr. Samuel Castillo, JR's office is located at 2222 W Division St Ste 235, Chicago, IL, 60622.
Is Dr. Samuel Castillo, JR accepting new patients?
Dr. Samuel Castillo, JR is accepting new patients on Vitals. View Dr. Samuel Castillo, JR's profile on Vitals to make an appointment.

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