Suggest an Edit Name* Categories* Doctor Hospital Pharmacy Add category State* Locality* ZIP* Street address* Phone* Website Opening hours Monday: 09:00 am — 05:00 pm Tuesday: 09:00 am — 05:00 pm Wednesday: 09:00 am — 05:00 pm Thursday: 09:00 am — 05:00 pm Friday: 09:00 am — 05:00 pm Saturday: 09:00 am — 03:00 pm Company description Dr. John R Valdin located in the city of Castro Valley, state California. The legal address of the Doctor 20055 Lake Chabot Rd. Directions to the Doctor Dr. John R Valdin can be found on our interactive map. Ask your questions by calling 5108811490 on workdays.</br></br></br>NPI number: Data not provided</br>Provider's gender: Data not provided</br>Practice names: Data not provided</br>Board certifications: American Board of Internal Medicine Certification in Internal Medicine American Board of Internal Medicine Sub-certificate in Nephrology (Internal Medicine) Your comments (not for publishing) * — Required information Dr. John R Valdin - Castro Valley ← View details 20055 Lake Chabot Rd, California, Castro Valley, 94546, Castro Valley, California 94546 5108811490