Meet Dr. Alejandro López — A Surgeon Who Transforms Lives

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

A Personal Message from Dr. López

In this short message, Dr. López shares his philosophy of patient-centered care and what to expect from your consultation.

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

ASMBS — Active Member
IFSO 2025 — Active Member
FACS — Fellow
Da Vinci Robotic Surgery
Bariatric Surgery Specialty
General Surgery Specialty
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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.”

— Amanda, Verified Patient

What Patients Say About Dr. López

★★★★★

“Dr. López exceeded every expectation. His attention to detail and bedside manner are unmatched.”

— Jennifer V.
★★★★★

“Knowledgeable, calm, and genuinely caring. Seven months post-op and I feel amazing.”

— Bryan S.
★★★★★

“He explained everything in detail and followed up with me weeks after surgery. Five stars without hesitation.”

— Carole A.
★★★★★

“I traveled alone from Missouri. Dr. López and his team made me feel like family from day one.”

— Melissa B.

Numbers That Speak for Themselves

20,000+Bariatric Surgeries
20+Years of Experience
4.9★Verified Reviews
3Mexico Locations

Surgeries Dr. López Performs

Gastric Sleeve→
Gastric Bypass→
Mini Gastric Bypass→
Duodenal Switch→
SADI-S→
Revision Surgery→

Research, Articles & Insights

Dr. López’s Peer-Reviewed Publications & 250+ CitationsView publications



When Revision Surgery Is the Right CallLearn more



What to Know About Medical Tourism in MexicoRead guide