Male 81 years


Dr. Ralph Defronzo, MD



Nephrology     -  Texas,  San Antonio

 Overview

Dr. Ralph Defronzo, MD works in San Antonio, Texas is a specialist in Nephrology, Internal Medicine and graduated Harvard Medical School in 1969. Dr. Defronzo is affiliated with University Health System and practicing for 54 years

 Specialties

  • Nephrology
  • Internal Medicine

 Conditions

• Rheumatoid Arthritis

 Board Certifications

  • Board Certified by the American Board of Internal Medicine

 Years Since Graduation

  • 54

 Education & Training

Medical School

Harvard Medical School

Boston, MA, United States

Graduated: 1969

Residency Hospital

Johns Hopkins Hospital

Baltimore, MD, USA

Year completed: 1971

Fellowship Hospitals

Nih Baltimore City Hospital

Year completed: 1973

 Awards

Awards for Dr. Ralph Defronzo, MD are not present.

 Dr. Defronzo Reviews

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 Office Locations


Primary location

 Office Address
701 South Zarzamora Street
Texas (TX)
San Antonio
78207
 Phone:(210) 257-1400

Accepting New Patients

  • No
* Please verify this information when scheduling an appointment.

 Map & Directions



Office Address, 701 South Zarzamora Street, San Antonio, Texas (TX), 78207




 Insurances Accepted (check insurance plans)

  • Aetna
  • Aetna HMO
  • Blue Card PPO
  • Blue Choice
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of Texas
  • Choice Care PPO
  • Choice Plus POS
  • Choice Plus POS II
  • Cigna
  • Great West Healthcare-Cigna PPO
  • Humana
  • MultiPlan
  • MultiPlan PPO
  • Navigate HMO
  • Navigate POS
  • Options PPO
  • PHCS Network PPO
  • Preferred PPO
  • UnitedHealthCare

* Please verify this information when scheduling an appointment.

 Blog Posts

Blog Posts for Dr. Ralph Defronzo, MD are not present.

 Patients Questions

Patients questions for Dr. Ralph Defronzo, MD are not present.

 Affiliated Hospitals


University Health System photo


University Health System

4502 Medical Drive Texas TX, San Antonio, 78229

University Health System is a District Authority owned hospital located in San Antonio, TX. Procedures/Diagnosis costs are above the state average in 3 of 6 procedures. Length of Stay is at the state average in 2 of 6 procedures.



  •  Latest reviews for Nephrology specialists

  • Dr. C. is a pleasant, professional caring and fun doctor. Answered all my questions on a keep it simple level and explained everything. He took his time. I will refer them when needed. What a great group!
    07 February 2024
    (6)
  • He is the best if you need help with panic attacks. He fixed up my medication and I feel better.
    31 January 2024
    (40)
  • Dr. Jungblut and staff are all professional, fun, conscientious. Been going here for a long time. My children and grandchildren now see Dr. Jungblut too.
    24 January 2024
    (7)
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