Summary

Growing up listening to his father, an insurance agent, tell the stories of his clients had a profound effect on the kind of physician Dr. John Canales would become. “I like hearing my patients’ stories. I think it makes me a better interventionalist because I understand where they’re coming from and how my treatments may affect their lives,” says Dr. Canales.

Dr. Canales was trained at some of the country’s most prestigious institutions. He completed medical school at Washington University in St. Louis and his internship and residency at the University of Texas Southwestern in Dallas. Dr. Canales then went to the Texas Heart Institute in Houston for his general and interventional cardiology fellowships. While there, he completed training in the non-surgical treatment of complex coronary and peripheral vascular disease.

Dr. Canales was also very active academically at the Texas Heart Institute. He investigated the role of using a patient’s own stem cells to regenerate damaged heart muscle and to rebuild arteries in the legs with severe blockages. His academic excellence, interventional skill, and compassionate care resulted in the honor of being named Chief General Cardiology Fellow and Chief Interventional Fellow at the Texas Heart Institute.

After training, Dr. Canales spent two years in New Braunfels practicing general and interventional cardiology. During his short time there, he became the Director of the Catheterization Laboratory at Christus Santa Rosa Hospital in New Braunfels and Chairman of the Limb Salvage Committee, a group dedicated to caring for patients with severe peripheral arterial disease.

But San Antonio was his home growing up and many of his family and friends were still there. So, Dr. Canales decided to join the Cardiology Clinic of San Antonio in August, 2013.

His interests and skills include treating complex coronary interventions and peripheral vascular disease. He has taken a special interest in patients with critical limb ischemia, renal arterial disease, lower extremity arterial disease, and venous disease. Dr. Canales is specially trained to use drug-eluting stents and balloons, cutting-edge atherectomy devices, and fractional flow reserve and intravascular ultrasound to guide coronary and peripheral interventions. He also performs transradial cardiac catheterizations—accessing the heart via the radial artery in the wrist instead of the femoral artery in the groin.

Dr. Canales is board certified in interventional cardiology, cardiovascular disease and nuclear cardiology. He practices out of Cardiology Clinic’s Northeast office, Stone Oak and Uvalde offices.
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Quick Facts

  • 4.7
  • 23 years of experience
  • speaks English, Spanish
  • University Of Texas Southwestern Medical School
  • 10 written reviews
  • 2 specialties
  • 8 areas of expertise
  • 2 board certifications
  • 5 hospital affiliations
  • 4 office locations
  • Male

Office Locations

Dr. John Fierros Canales has 4 locations

Cardiology Clinic Of San Antonio Northeast

12500 Judson Rd Ste 300San Antonio, TX 78233
Mon8:30 am - 5:00 pm
Tue8:30 am - 5:00 pm
Wed8:30 am - 5:00 pm
Thu8:30 am - 5:00 pm
Fri8:30 am - 5:00 pm
SatClosed
SunClosed

Methodist Hospital Stone Oak

1139 E Sonterra BlvdSan Antonio, TX 78258

Methodist Hospital Northeast

12412 Judson RdLive Oak, TX 78233

Methodist Hospital

7700 Floyd Curl DrSan Antonio, TX 78229

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Dr. John Fierros Canales, MDDr. Hunter Marsden AddisDr. Andre John OgnibeneDr. Heather Rose Riebel
Interventional CardiologyCardiovascular DiseaseInternal MedicinePediatrics
Accepts New Patients
4.7 
23 Years of Experience 35 Years of Experience 70 Years of Experience 20 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
San Antonio , TXSan Antonio , TXFort Sam Houston , TXSAN ANTONIO , TX
Med School: Washington University In St Louis School Of Medicine Med School: Pennsylvania State University College Of Medicine Med School: New York University School Of Medicine Med School: Univ Of Tx Hlth Sci Ctr At San Antonio Joe R & Teresa Lozano Long Schof Med
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Insurance Plans Accepted by Dr. John Fierros Canales

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

Medical Specialties

Dr. John Fierros Canales has the following 2 specialties

Specialty Expertise

Dr. John Fierros Canales has the following 8 areas of expertise

  • Acute Coronary Syndrome (ACS)
  • Cardiovascular Disease
  • Catheterization
  • Flu (Human Influenza)
  • Heart Block
  • High Blood Pressure (Hypertension)
  • High Cholesterol (Hypercholesterolemia)
  • Unstable Angina

Certifications, License, & Education

23 Years Experience

MEDICAL LICENSE

Medical Doctor, Texas, 2025, Expired

EDUCATION & TRAINING

Residency

University Of Texas Southwestern Medical School

Medical School

Washington University In St Louis School Of MedicineGraduated in 2003

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Frequently Asked Questions

Does Dr. John Canales accept my insurance?
You can see the insurance plans that Dr. John Canales accepts on their Vitals profile.
Is Dr. John Canales accepting new patients?
Dr. John Canales has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
Where is Dr. John Canales's office located?
Dr. John Canales's office is located at 12500 Judson Rd Ste 300, San Antonio, TX, 78233.
Does Dr. John Canales accept virtual/telehealth appointments?
Dr. John Canales has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
How can I make an appointment with Dr. John Canales?
You can find contact information for Dr. John Canales here on Vitals.

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