Dr. Valenzuela is Board Certified in Nephrology. He was born in Santiago, Chile and raised in Sheepshead Bay Brooklyn. He received his medical education at the University of Chile School of Medicine. He completed his internship and residency programs at the Brookdale University Hospital and Medical Center in Brooklyn, New York. After completing a year of being Chief Resident, he completed his fellowship in Nephrology at the Brookdale University Hospital and Medical Center in Brooklyn, New York. During his fellowship, Dr. Valenzuela published numerous articles in peer reviewed medical journals.