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Summary
Dr. John Gancayco treats colon polyps, abdominal pain, and upper GI bleeds, and performs lower GI endoscopy, colonoscopy, and upper GI endoscopy. He practices gastroenterology with 21 years of experience and is affiliated with Baptist Medical Center, Methodist Hospital Northeast, Methodist Hospital Stone Oak, and Brooke Army Medical Center.
Dr. Gancayco earned his medical degree from the Uniformed Services University of the Health Sciences F. Edward Hébert School of Medicine and sees patients in Fort Sam Houston and San Antonio, Texas. He speaks English and Spanish.
Dr. Gancayco earned his medical degree from the Uniformed Services University of the Health Sciences F. Edward Hébert School of Medicine and sees patients in Fort Sam Houston and San Antonio, Texas. He speaks English and Spanish.
Overview based on verified provider data
Quick Facts
- 21 years of experience
- speaks English, Spanish
- Uniformed Services Univ Of The Health Sciences F E Hebert Schl Of Medicine
- 1 specialty
- 4 hospital affiliations
- 2 office locations
- Male
Office Locations
Dr. John Graciano Gancayco has 2 locationsBrooke Army Medical Center
3551 Roger Brooke DrFort Sam Houston, TX 78234 Tel: (210) 916-4141
Mon7:00 am - 4:00 pm
Tue7:00 am - 4:00 pm
Wed7:00 am - 4:00 pm
Thu7:00 am - 4:00 pm
Fri7:00 am - 4:00 pm
SatClosed
SunClosed
Compare with Similar Doctors
 |  |  |  |
| Dr. John Graciano Gancayco, MD | Dr. Zeid Karadsheh, MD | Ashley Anderson, APRN | Jan Seiler, APRN |
| Gastroenterology | Gastroenterology | Gastroenterology | Gastroenterology |
| Accepts New Patients | Accepts New Patients | Accepts New Patients | |
| 21 Years of Experience | 22 Years of Experience | ||
| No Virtual Visit Option | Virtual Visit Available | Virtual Visit Available | Virtual Visit Available |
| Speaks English, Spanish | Speaks English, Arabic | Speaks English | Speaks English |
| Fort Sam Houston , TX | Pasadena , TX | Sacramento , CA | Montgomery , AL |
| Med School: Uniformed Services Univ Of The Health Sciences F E Hebert Schl Of Medicine | Med School: New York Medical College | Med School: East Tennessee State University - Quillen College of Medicine | Med School: Georgia State University |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Dr. John Graciano Gancayco
Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.
Medical Specialties
Dr. John Graciano Gancayco has the following specialty
Certifications, License, & Education
21 Years Experience
Dr. John Graciano Gancayco holds an expired medical license in the state of Texas.
Medical License
Medical Doctor with an expired medical license in the state of Texas that expired in 2026.
Education & Training
Medical School
Graduated from Uniformed Services Univ Of The Health Sciences F E Hebert Schl Of Medicine in 2005.
NPI Number
Dr. Gancayco's NPI number is 1609089390.
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Frequently Asked Questions
- What languages does Dr. John Gancayco speak?
- Dr. John Gancayco speaks English and Spanish.
- How can I make an appointment with Dr. John Gancayco?
- You can find contact information for Dr. John Gancayco here on Vitals.
- Does Dr. John Gancayco accept virtual/telehealth appointments?
- Dr. John Gancayco has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
- Where is Dr. John Gancayco's office located?
- Dr. John Gancayco's office is located at 3551 Roger Brooke Dr, Fort Sam Houston, TX, 78234.
- Which hospitals is Dr. John Gancayco affiliated with?
- Dr. John Gancayco is affiliated with Baptist Medical Center, Methodist Hospital Northeast, Methodist Hospital Stone Oak, and BROOKE ARMY MEDICAL CENTER.
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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