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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Overview based on verified provider data

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

Patients’ Perspective

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

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. Darren Ballard, MDDr. Kevin Liebovich, MDDr. Rahul Julka, MD
GastroenterologyGastroenterologyGastroenterologyGastroenterology
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
3.4 
4.1 
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 , ILHomewood , ILGurnee , ILHomewood , IL
Med School: University of Illinois College of Medicine, Rockford IL Med School: Loyola University Med School: Loyola University of Chicago, Stritch School of Medicine Med School: Loyola University Medical Center
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

Dr. Samuel F Castillo, JR 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

Fellowship

Completed their fellowship at Phoenix VA Health Care System, Banner Good Samaritan Medical Center, Phoenix, AZ, and Advanced Endoscopy training including ERCP certification.

Residency

Completed their residency at Mayo Clinic College of Medicine, Rochester MN.

Medical School

Graduated from University of Illinois College of Medicine, Rockford IL and University Of Illinois At Chicago College Of Medicine in 2003.

NPI Number

Dr. Castillo, JR's NPI number is 1205801313.

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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.
What languages does Dr. Samuel Castillo, JR speak?
Dr. Samuel Castillo, JR speaks English and Spanish.
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.

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