Physician leader pursuing health care innovation, education & creation of engaging video content, all while having fun along the way!
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Physician leader pursuing health care innovation, education & creation of engaging video content, all while having fun along the way!
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About Me

My goal is to be a leader in the rapidly changing face of health care. As technology companies come into medicine, I truly believe they need the insight of real life, experienced physicians to improve the lives of patients. As far as experience…..
Oh, and I still practice part-time medicine to make sure I keep grounded in patient care. I want to work with entrepreneurs that have serious ideas to improve health care, meet interesting people and have fun along the way. castillosenaragon.org

Current Clinical Practice

Current Roles and Affiliations

Current Clinical Practice

Current Roles and Affiliations

Available For

Medical Consulting and Advisory

Public Speaking/ Webinars

Patient Education

Medical consulting and advisory

Advisory roles

Public Speaking/ Webinars

Patient Education

Disrupting Kidney Care Webinar Series

Watch video first, then claim CME credit

Powered by CMEfy – a seamless way for busy clinician learners to discover Internet Point-of-Care Learning opportunities that reward CME credits & more.

What My Clients Say

Dora Pebbles Smith
Caring, and loving what he does, need more caring Dr’s like him. Thank you Dr Butt for your compassion and your amazing skill in loving what you do for all your patience
Mark Marion
Dr Butt is a eminently qualified medical professional and is a compassionate human being!
Laura Provenzano Lomax
Dr.Butt is an extremely knowledgeable nephrologist that genuinely cares about his patients and improving their lives.
Vicente Delicia Valdez
I have been a nurse for 13 years and always enjoy when Physicians get involved in teaching and engaging with their patients. Dr Butt shows that passion. Thanks for you great video.

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UT Health DeZavala

4306 De Zavala Rd. Building 1 San Antonio, TX 78230
(210) 450-6720

Texas Diabetes Institute

701 S. Zarzamora San Antonio, TX 78207
(210) 358-7578

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