Meet Dr. Alejandro López — A Surgeon Who Transforms Lives
Board-certified bariatric surgeon with 20+ years performing minimally invasive weight loss procedures across Tijuana, Guadalajara, and Puerto Vallarta.
Two Decades Mastering Minimally Invasive Weight Loss Surgery
Dr. Alejandro López began his surgical career in Guadalajara, where he completed an intensive General Surgery residency at Mexico's National Medical Center (IMSS). Driven to specialize in obesity treatment, he pursued advanced fellowship training in laparoscopic, robotic, and esophageal techniques at Cook County Hospital in Chicago, mentored by renowned surgeon Dr. Philippe Donahue.
Since 2005 he has performed over 20,000 bariatric procedures, including primary sleeves, gastric bypasses, duodenal switches, and complex revision surgeries. Beyond operating, he trains other bariatric surgeons across Latin America and contributes peer-reviewed research to international surgical journals — a level of academic engagement rare among private practice surgeons.
His patients describe him as thorough, calm, and genuinely invested — qualities that make weight-loss surgery feel safe rather than scary.
Education & Training
- Medical Degree — University of Guadalajara (UAG)
- General Surgery Residency — National Medical Center, IMSS Guadalajara
- Advanced Fellowship — Cook County Hospital, Chicago, IL
- Specialization — Bariatric & Metabolic Surgery
- Continued Education — Robotic Surgery (Da Vinci), SILS, Revisions
Five Reasons Patients Trust Dr. López
Highly Trained
International fellowship training in Chicago + 20 years in practice.
Board-Certified
Active member of ASMBS, IFSO, FACS, and Mexico's CMCOEM.
Up-to-Date
Performs SILS, Da Vinci robotic, and the latest minimally-invasive techniques.
Vast Experience
20,000+ bariatric procedures across primary, revision, and complex cases.
Compassionate
Bilingual, accessible care — patients reach him directly post-op.
How to Choose the Right Bariatric Surgeon in Mexico
Picking the right surgeon for weight-loss surgery is one of the most important decisions you'll make. In this video, learn the 5 essential criteria every patient should verify before booking — and see how Dr. López meets each one.
Board certifications · Surgical volume · Hospital affiliations · Recovery support · Bilingual care
Member of Leading Surgical Societies
Certifications & Diplomas






Amanda's Experience with Dr. López
Amanda traveled to ALO Bariatrics for her gastric sleeve. In her own words she shares the consultation, the surgery, and the life-changing recovery she's had since.
“From our very first call to the moment I walked out of the hospital, I felt heard, safe, and supported. Dr. López truly cares.”
What Patients Say About Dr. López
“Dr. López exceeded every expectation. His attention to detail and bedside manner are unmatched.”
“Knowledgeable, calm, and genuinely caring. Seven months post-op and I feel amazing.”
“He explained everything in detail and followed up with me weeks after surgery. Five stars without hesitation.”
“I traveled alone from Missouri. Dr. López and his team made me feel like family from day one.”
Numbers That Speak for Themselves
Surgeries Dr. López Performs
Ready to Talk to Dr. López Directly?
Schedule a free consultation with our patient coordinator. Personal evaluation in less than 24 hours.