Dr. Leonardo Pazarín-Villaseñor is a Mexican nephrologist and clinical researcher in Guadalajara, Jalisco, Mexico. His academic background includes a medical degree from the University of Guadalajara (UdeG) and a specialization in Nephrology completed at the Western National Medical Center (IMSS). He also holds a doctorate in Clinical Research from the University of Guadalajara. He has between 20 and 25 years of experience as a nephrology specialist. Currently, he works as a nephrologist and a Level C associate researcher in the Surgical Research Division of the Western Biomedical Research Center (CIBO) of the IMSS. He is an adjunct professor for the Nephrology specialization program at Regional General Hospital No. 46 in IMSS in Jalisco, Mexico, and a member of Mexico's National System of Researchers (SNII), specifically holding the rank of National Researcher Level 1. In the scientific realm, he has authored dozens of publications (approximately 20 to 60, according to sources such as ResearchGate, ORCID, and Dialnet) in journals specializing in nephrology, nutrition, and molecular sciences. Recurring themes in his work include peritoneal dialysis, hemodialysis, glomerular disease, oxidative stress in diabetic nephropathy, kidney disease in Mexico, and markers of renal graft function. His ORCID profile is 0000-0001-8755-9058. In summary, he is an active clinical nephrologist and researcher in western Mexico, dedicated to the care of renal patients and to clinical research.