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Use the sliders to determine your Body Mass Index (BMI), and whether or not you should contact OCC to schedule a weight loss surgery consultation.

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Underweight < 18.5
Normal weight 18.5 - 24.9
Overweight 25 - 29.9
Obesity BMI of 30 or greater

Your Weight: 184 pounds


Your Height: 5' 4"

Your BMI: 32
Surgery Recommended
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Lucía Chávez, CN, IFNCP

Chief Nutritionist

  • 7300+

    satisfied patients

  • 7+

    years of experience



Having the combined experience of helping more than 11,000 patients and the experience of overcoming her own health problems, Lucia Chavez’s professional recommendations address the root cause of challenging health conditions in a practical and sustainable way in order to recover health.

Lucía is a Certified Nutritionist who graduated from Universidad Iberomericana with honors and is the recipient of the University Medal of Merit. Her interests include gastrointestinal disorders, women’s health, and autoimmune conditions.

She has studied postgraduate courses in the Perioperative Management of the Bariatric Surgery Patient; Functional Foods and Dietary Supplements for Cancer Prevention and Treatment; Digestive Disease Care; Exercise, Supplementation, and Hydration; among many others. She also obtained a Diploma in Bariatric Nutrition from Colegio Mexicano de Cirugía para la Obesidad y Enfermedades Metabólicas (Metabolic and Obesity Surgery Mexican Association). In addition, she has training in Neuro-Linguistic Programming (NLP) to help motivate and educate her patients.

Lucía is a professor at her alma mater, Universidad Iberoamericana, a member of the Academy of Nutrition and Dietetics (formerly ADA), as well as a member of the practice group Dietitians in Integrative and Functional Medicine. She is also a member of the Integrative and Functional Nutrition Academy, the Institute of Functional Medicine in the US, and Colegio Mexicano de Nutriólogos in Mexico. She is a founding member of the Association of Nutritionists and Dietitians of Baja California and a frequent conference speaker at medical and nutrition conferences.

Lucía is the first nutritionist certified by IFNA in Mexico. The Integrative and Functional Nutrition Academy (IFNA), in an educational partnership with the Institute of Functional Medicine, is a clinician training program for registered dietitian nutritionists and other nutrition professionals. The IFNA’s emerging medical nutrition model combines evidence-based science, clinical wisdom, and critical thinking for the advanced practice of a personalized nutrition care process.

At Obesity Control Center, she provides counseling for weight and metabolic management in surgical and non-surgical patients.



Graduated from:

Universidad Iberomericana with honors

Colegio Mexicano de Cirugía para la Obesidad y Enfermedades Metabólicas (Metabolic and Obesity Surgery Mexican Association) with a Diploma in Bariatric Nutrition


Neuro-Linguistic Programming (NLP)

Post-Graduate Courses

Perioperative Management of the Bariatric Surgery Patient

Functional Foods and Dietary Supplements for Cancer Prevention and Treatment

Digestive Disease Care

Exercise, Supplementation, and Hydration

…Among many others.




University Medal of Merit from Universidad Iberomericana

Member of:

Academy of Nutrition and Dietetics (formerly ADA)

Dietitians in Integrative and Functional Medicine

Integrative and Functional Nutrition Academy

Institute of Functional Medicine in the US

Colegio Mexicano de Nutriólogos in Mexico

Association of Nutritionists and Dietitians of Baja California (Founding Member)


Comparing OCC to Other Weight Loss Surgeons


  • 50 Years combined experience

  • Proven/published safety track record

  • Trademark innovations & techniques

  • Safest Most effective procedures

  • No brokers / middlemen


  • New to the industry

  • Hearsay

  • Conventional

  • Unverified claims

  • Brokers fee up to 30%, low budget surgical team

Obesity Control Center is considered one of the best facilities for weight loss surgery — not only in Mexico, but the world. Our award-winning team of bariatric surgeons have a combined 50 years of experience with over 25,000 successful bariatric surgery procedures to our credit. We were one of the first centers to perform bariatric surgery anywhere in the world.

Because Obesity Control Center holds itself to the most rigorous medical and safety standards found anywhere in the world, patients from Mexico, the United States and every corner of the globe seek care from our weight loss surgeons. We are fully accredited as a Center of Excellence in Bariatric and Metabolic Surgery. We also have been awarded the Golden Seal by Joint Commission International, a distinction recognizing our highest standards of safety: a complication rate of less than 1%.

Three master bariatric surgeons — Dr. Ariel Ortiz, Dr. Arturo Martinez and Dr. Santiago Horgan — care for every patient. That means that Obesity Control Center patients are always in the hands of a world-renowned and highly trained surgeon. Our surgeons are pioneers in the field, with accomplishments that include being the first to provide teenage obesity treatments and creating the IGS Improve Gastric Sleeve®, the Stomach Sparing Gastric Sleeve® and the Double-Buttress Sewing Technique.

At our state-of-the-art facility, our surgeons offer several types of weight loss surgery, including gastric bypass, gastric sleeve, lap band surgery and gastric plication. During the consultation phase, the weight loss surgeons will evaluate each patient individually to create a customized surgical plan that considers the patient’s goals, concerns, preferences and medical history.

Dr. Ortiz, Dr. Martinez and Dr. Horgan received their advanced education in bariatric surgery at elite educational institutions and have been invited to instruct the next generation of weight loss surgeons as professors and guest lecturers. In addition to changing their patients’ lives with bariatric surgery, they are innovators in their field who have developed safer and more efficient ways to perform weight loss surgery.

The entirety of Obesity Control Center’s staff in Tijuana is just as beloved by patients. We offer five-star accommodations to our medical tourism patients, with round-the-clock concierge service. It is our pleasure to ensure that you travel to and from our weight loss center safely and comfortably.

Another reason patients choose Obesity Control Center is because our surgeons and staff care about our patients’ well-being well after they return home from bariatric surgery. We commit to providing five years of postoperative care, including a personalized nutrition and exercise plan, so that patients meet their goals and feel adequately supported during their weight loss journey.

Obesity Control Center Exterior in Tijuana, Mexico

Medical Tourism

Travel for Obesity Control Center in Tijuana, Mexico

It is completely safe to travel to Mexico and have surgery with us at OCC. Over 100 people from the USA come to Mexico every single month to have surgery with Dr. Ortiz or Dr. Martinez and achieve optimal results. We even take care of patients by shuttling them between the hotel and hospital, as well as across the border.

We have passed the most rigorous accreditations and now display a List of Awards and Designations of Quality bestowed upon the Hospital and the Surgeons. In order for the Obesity Control Center to be awarded the various distinctions and designations by third party quality accreditation organizations, we had to go through rigorous year-long reviews that examined every aspect of our practice, including the staff, surgeons, and facilities. We are one of only a few international hospitals to be awarded these designations. We are fully accredited as a Center of Excellence in Bariatric and Metabolic Surgery and our Surgeons have been designated Surgeons of Excellence in Bariatric and Metabolic Surgery, and have also obtained the Golden Seal awarded by the Joint Commission International that signifies that we have met the highest standards in patient safety and quality available in healthcare.

If you have any questions or concerns about traveling to Mexico for bariatric surgery, please contact The Obesity Control Center. A member of our team would be happy to speak to you about what you can expect during your weight-loss surgery process.

Learn More

Obesity Control Center

The OCC Difference: OCC Patients Lose More Weight & Keep It Off

An innovative, and industry-leading metabolic weight loss center of excellence that helps people from around the world achieve their weight loss goals using lifestyle changes and the most modern and safe techniques in bariatric surgery.

  1. Highest Safety Standards

    Fully Accredited and follow the highest US medical safety standards. Lowest complication and infection rate with a 20+ year track record of successful surgeries.

  2. Cutting-Edge Innovation & Experience

    Pioneered multiple techniques used around the world, such as the IGS Improved Gastric Sleeve®. Co-developed the gastric balloon & The OCC Double Buttress Technique™. Performed over 25,000 successful procedures.

  3. Comprehensive 5 Year Post-Op Care

    OCC guides you through five years of post-op care through our app, online support groups, and US-based on-call patient coordinators. You become part of the #OCCFamily for life.

  4. All-Inclusive Concierge Service

    Includes service to and from the airport, guidance over the border, and five-star accommodations. OCC is your partner from initial consultation to five years of post-surgery follow-up.

  5. Fast Track Surgery

    Work with patients to get them safely prepared from consultation to surgery in as fast as 4-6 weeks.