John R Valdin MD
- Nephrology Castro Valley, CA
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John R Valdin, MD is a Doctor primarily located in Castro Valley, CA, with other offices in San Leandro, CA and Walnut Creek, CA. Their specialties include Nephrology and Internal Medicine. John R Valdin is affiliated with Antioch Convalescent Hospital.
Specialties & Expertise
John R Valdin has the following 2 specialties.
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