Summary

Dr. Samuel Castillo Jr. treats colon polyps, GERD, and esophagitis, and performs colonoscopy, lower GI endoscopy, and laparoscopy. He practices gastroenterology, internal medicine, and colorectal surgery in Chicago, Illinois, and has 23 years of experience.

Dr. Castillo earned his medical degree from the University of Illinois at Chicago College of Medicine and completed his residency at Mayo Clinic College of Medicine in Rochester, Minnesota, followed by fellowships at the Phoenix VA Health Care System and Banner Good Samaritan Medical Center in Phoenix, Arizona. He is affiliated with Saint Mary of Nazareth Hospital, Ascension Saint Alexius, Ascension Saint Elizabeth Medical Center, Ascension Saint Joseph Chicago, and Humboldt Park Health. He speaks English and Spanish.

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
  • 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 JR., MD
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Dr. Samuel F Castillo, JR JR., MDDr. Baseer Qazi, MDDr. Amit Kalra, MDDr. Jennifer Spanier-Stiasny, DO
GastroenterologyGastroenterologyGastroenterologyGastroenterology
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
3.4 
5 
4.5 
4.5 
23 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 , ILGlenview , ILHighland Park , ILHighland Park , IL
Med School: University of Illinois College of Medicine, Rockford IL Med School: Deccan College Medical Sciences Med School: University of Illinois Med School: Kansas City University of Medicine and Biosciences
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 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

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

What languages does Dr. Samuel Castillo, JR speak?
Dr. Samuel Castillo, JR speaks English and Spanish.
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 virtual/telehealth appointments?
Dr. Samuel Castillo, JR has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
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.
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.

Data Sources

This provider profile is built using data from:

  • NPPES NPI Registry
  • State medical licensing boards
  • Healthcare system and provider network data

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