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Areas of Expertise

  • Cardiovascular Medicine
  • Diabetes
  • Diabetes and Endocrinology
  • Endocrinology and Metabolism
  • General Surgery
  • Lipid Disorders

Conditions and Treatments


1215 21st Avenue South, 5th Floor
Nashville, TN 37232
Vanderbilt Health One Hundred Oaks
719 Thompson Lane, Suite 22200
Nashville, TN 37204


  • English
  • Spanish


  • Doctor of Medicine - Cayetano Heredia University
  • Fellowship - Mayo Clinic
  • Internship - University of Texas Southwestern Medical Center
  • Residency - University of Texas Southwestern Medical Center

Board Certifications

  • Endocrinology, Diabetes and Metabolism - American Board of Internal Medicine, 2015

Patient Comments

Patient Comments are gathered from the Press Ganey Patient Experience Survey and displayed in full. Patients are not identified in order to respect patient privacy.
Great experience!
March 9, 2024
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Dr. Carranza is the best! She is knowledgeable, compassionate and supportive.
March 1, 2024
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Dr. Leon asked and answered questions, she explained medications for care
February 8, 2024
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Dr Carranza Leon is an amazing physician!
February 7, 2024
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Barbara is the BEST!
February 3, 2024
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She is the best. She does not male assumptions but listens to my needs a d my goals and works with me on a plan for my health.
January 31, 2024
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I really enjoy my visits with Dr.Carranza Leon. She's so personable & always takes in consideration any possible solutions I may have if I'm experiencing any problems. That makes me feel that she values my opinions & that she truly cares about my wellbeing, which is extremely important to me.
January 27, 2024
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Dr Leon is an extremely bright, talented and skilled physician who also has excellent communication skills. I can't imagine what else you could ask for. She has been an invaluable asset to me for the past 6 years while I have been dealing with various medical issues. Most recently, she suggested a uACR test which revealed that I am in the early stages of kidney disease. This gives me a chance to adjust my diet and medication to help avoid further damage and kidney failure. This may very well add years to my life - if I had waited for the usual eGFR test to show kidney problems, I would already have been in kidney failure and on the path to dialysis or transplant.
January 25, 2024
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Best Dr. I've seen so far
January 16, 2024
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