Dr. Victor H. Villarreal, Md

San Antonio's 56 nephrology listings cluster hard around a few ZIPs. Two 78229 variants hold four practices each, and several more 78229 ZIPs carry three apiece. Smaller pockets like 78207 hold just two. That spread means your closest kidney specialist might sit in a ZIP with only one or two other options nearby, so it's worth checking a couple before you settle on who to call.

Most listings here include a phone number, and most list a website too, though none carry a verified badge. Paid placement hasn't switched on for this category yet, so nothing you see is marked Sponsored, and the page order is plain directory sequencing, not a ranked or reviewed lineup. If you run one of these practices and notice a missing phone number or blank website field, you can claim the listing and fill in the gap yourself. That matters most outside the denser 78229 cluster, where fewer nearby names mean each listing carries more weight in someone's search.