Dr. Ralph Defronzo, M.D.

Endocrinology

Internal Medicine, Endocrinology, Diabetes & Metabolism

📍 SAN ANTONIO, TX

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20+

Yrs licensed

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NPI-verified

#1851408843

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Getting to know Dr. Defronzo

Verified from public records

Dr. Defronzo is an M.D. specializing in Endocrinology. They have 20+ years of experience in practice.

We put this together from the official NPPES NPI Registry and the CMS clinician file so you can get to know Dr. Defronzo before you reach out — it isn't written by the doctor. Always confirm the details with the office.

Verified registry data

NPI

Full name

Dr. Ralph Defronzo, M.D.

NPI number

1851408843

Specialty

Internal Medicine, Endocrinology, Diabetes & Metabolism

Licensed since

2006 · 20+ years

Practice location

SAN ANTONIO, TX

Office phone

210-358-7500