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Doctor's Profile

Dr. Luis Linares is one of the most well-respected and uniquely talented radiotherapy oncologists in the Central America and Caribbean region, with over 25 years of hands-on experience in globally recognized cancer treatment centers. He has performed more than 20,000 cancer-related procedures, from university studies in England, to extensive research and patient care at Memorial Sloan-Kettering Cancer Center, and then as medical director of the New Orleans Cancer Institute.

Dr. Linares treats people who suffer from one of a hundred types of cancer, and under his guidance, each patient who enters HOPE International feels like he or she is the most important person in the world. They depend on his expertise to diagnose with assurance, and to coordinate care in a manner that Dr. Linares describes as “the art of medicine” – precisely sculpted and balanced, sublimely executed, and ultimately successful.

Professional Affiliations

HOPE International Radiotherapy, Guatemala City, Guatemala

  • Director Médico, 2009-actual. Medical Director, 2009 to present

American Medical Association – AMA, Washington, DC

  • “Valued member in good standing of the America Medical Association, and is committed to upholding the principles of medical ethics, which set the highest ethical standards for the profession.” Member since 2009.
  • AMA – Section on Radiology

M.D. Anderson Physicians Network

  • Credentialed provider

American Society of Clinical Oncology

  • Active Member since 1988. Miembro Activo desde 1988

The American Board of Radiology, American Society of Therapeutic Radiologists

  • Board certification, 1986

Instituto Catalán de Oncología, Barcelona, España

  • Asesor Científico, 2008-actual. Scientific Consultant, 2008 to present

Universidad de Barcelona, Barcelona, España

  • Profesor Adjunto, 2008-actual. Adjunct profesor, 2008 to present

East Jefferson General Hospital, Department of Oncology – Radiotherapy, Metarie, LA

  • Radiotherapy Oncologist 2006-2009 Oncólogo Radioterapeuta 2006-2009

United States Patent Office, Washington DC

  • Patent Granted to Dr. Luis Linares, Inventor, July 29th, 2008. Patent #7404791 B2
  • Invention: “Device for Radiation Treatment of Proliferative Tissue Surrounding a Cavity in an Animal Body”.

Baptist Medical Center, Oschner Clinic, New Orleans, Louisiana

  • Awarded “New Orleans Top Doctor” by New Orleans Magazine, 2008

Consumers’ Research Council of America, Washington, DC

  • Award of Excellence granted to Dr. Luis Linares, Oncologist:
  • “Best Doctors in America“, 2007-2008

New Orleans Cancer Institute – NOCI, New Orleans, Louisiana, USA

Louisiana Instituto de Cáncer de New Orleans

  • President of the Committee on Cancer, 2005
  • Medical Director, 1994-2005
  • President of the Committee on Ethics and Protocols, 2003-2005

Memorial Medical Center, Dept. of Hematology and Oncology, New Orleans, Louisiana

    • President of the Committee on Cancer Presidente del Comité de Cáncer, 2005
  • Chief of Staff – Committee of Hematology and Oncology. Presidente del Staff Médico en el Comité de Especialistas en Hematología y Oncología, 2005
  • Medical Director, 2003-2005. Director Médico

American College of Radiation Oncology

  • Fellowship granted, May 2001

American Society of Therapeutic Radiology and Oncology

  • Active member since 1986. Miembro Activo desde 1986

University of the State of New York, Albany, New York

  • Licensed to Practice Medicine and Surgery, 1985

Licensed Medical Doctor in the United States

  • Arizona, Florida, Georgia, Louisiana, Maryland, New York, Pennsylvania

Washington County Hospital, Hagerstown. MD

  • President of the Committee on Ethics and Protocols, 1988-1994
  • Medical Director, Department of Oncology – Radiotherapy, 1988-1994

Colegio de Médicos y Cirujanos de Guatemala Guatemalan College of Physicians and Surgeons

  • Miembro Colegiado #1988. Member certification #1988

Academic Affiliations

Tulane University Medical Center

  • Associate Professor, 1999 Profesor Asociado

Louisiana State University – LSU Cancer Center

  • Associate Professor, 1999 Profesor Asociado

Memorial Sloan Kettering Cancer Center, New York, NY, USA

  • Oncology – Radiotherapy. Radioterapia Oncológica
  • Fellowship in Bachytherapy. Braquiterapia, 1985-1988

Royal Marsden Cancer Hospital, London, England

  • Oncology and General Surgery Cirugía Oncológica, 1978-1980

Christie Hospital, Manchester England

  • Oncology Surgery Cirugía Oncológica, 1978-1980

Universidad de San Carlos – USAC, Guatemala City

  • Médico y Cirujano, 1975. Medical degree 1975


United States Patent Office, Washington DC

  • Patent Granted to Dr. Luis Linares, Inventor, July 29th, 2008. Patent #7404791 B2
  • Invention: “Device for Radiation Treatment of Proliferative Tissue Surrounding a Cavity in an Animal Body”.


Cancer Treatment in Guatemala

By Lori Shea

Published in Revue Magazine, April 2012

Just say the word…. “Cancer” ….and all sorts of emotions arise.  Maybe we remember the sadness and loss of a co-worker or neighbor. Sometimes the grief strikes closer to home, like my husband, or your sister, or worse, a child. But more and more, we are experiencing another set of emotions regarding cancer treatment today: Hope, bravery, triumph, relief and gratitude.

In the United States, one in six people is expected to suffer some form of cancer in their lifetime.  With this sobering statistic regularly in the news, you must wonder how this disease might affect your lifestyle, family relationships, and retirement fund.  

Determining the most effective course of treatment is not always a clear choice, as it is the result of extensive testing and careful planning by a team of cooperating specialists. Having insurance is no guarantee that you will be protected from major, life-changing expenses. Patients with insurance are thinking carefully before agreeing to treatment, because out-of-pocket co-payments for the drugs alone could easily run $15,000 to $30,000 a year.

In Guatemala, we are proud to offer three Cancer Treatment Centers and top-notch oncologists, each with a separate focus, that can work in conjunction as a team, together with the surgeons, to impact the patient’s treatment plan toward a successful recovery.

Dr. Luis Linares of Hope Radiotherapy Center has over 25 years of experience performing 25,000 cancer-related procedures. From university studies in England, to extensive research and work at Memorial Sloan-Kettering Cancer Center, and then as medical director of the New Orleans Cancer Center, he has brought his skills and expertise back home to us in Guatemala.  Offering radiotherapy and brachytherapy, Hope International opened in 2010 with state-of-the-art cancer treatment technology which surpasses the quality available in many of the cancer hospitals in the United States.

Radiotherapy involves directing a specialized external beam into the tumor to diminish or destroy it, while brachytherapy is a time-release method of implanting seeds that release radiation in specific daily doses.  In both of the non-painful treatments, no surrounding tissue is damaged.  At Hope International, eight weeks of radiotherapy treatment, with five sessions per week, costs around $12,000, compared to $70-90,000 in the U.S.

Dr. Luis M. Zetina Toache  LINK TO:  is a leading figure in Latin America in the field of immunotherapy and the latest technologies in cancer treatment.  As medical director of Oncomedica Cancer Consultants since 2000, Dr. Zetina conducts high-level scientific research on new cancer drugs, here in Guatemala, fully supported by the FDA.  He has participated in research protocols on Herceptin, Avastin, Tarceva, Xeloda and other drugs to successfully treat cancer with the latest advances in chemotherapy treatment methods.

Dr. Zetina is a member of the American Society of Clinical Oncology, the European Society of Medical Oncology, and of the Chemotherapy Foundation, a non-profit organization founded by Dr. Ezra Greenspan of the Mount Sinai School of Medicine in New York.  We are grateful to have the benefit of his many years of cutting-edge skills and research available to us here, in zone 15, Guatemala City.

At Medi-Center Guatemala, Dr. Byron Sanchez, a well-published hematologist and oncologist, has been researching the possible benefits of stem cell treatments for his patients. Although success rates vary, we look forward to the day when this exciting biotech application could be the source of reliable long-term positive results.

All the physicians agree that early detection is the best hope for a cure. Since it is more difficult to treat patients who may have been mishandled or misdiagnosed by other doctors, the most highly skilled cancer specialists agree that the personal situation of each patient must be carefully analyzed before deciding which treatment plan will give the best possible chance of success.

Special Interests

Come back soon to read about the latest treatment methods that this doctor finds most interesting.  


Dear Dr. Linares,

During our personal and professional lives, we receive various recognitions, prizes, tributes, and such. We remember the feelings of happiness, satisfaction, and commitment with gratitude and nostalgia. However, in my case, nothing is comparable to the depth of emotion that I experienced with you, Dr. Linares, and your wonderful medical staff at HOPE International.

I will always remember that day, Friday July 17, 2016, when I opened the door to face the group of nurses and technicians that I barely knew a few days before, and saw their radiant faces. I could read in each one the genuine desire to share the appreciation for the improvement of my medical condition. It was hard for me to control my emotion and maybe should apologize for that.

“Hope” is an institution whose name reflects the true reason of its existence. Many of us arrive here because it is the only “hope” that we have left to cling to. From the first time I arrived to Hope International, I knew that we would recover what was previously lost by the attitudes of other cancer centers.

Just like “love at first sight”, I had “Hope at first sight”, knowing that you would give us an encouraging, promising future, with the possibility of there being more tomorrows with a better quality of life.

I only wish we had a more powerful term than the usual “thank you very much” to express the real dimension of gratitude I have for you, Dr. Linares, and your magnificent team. I am grateful to have enjoyed the privilege of your attention. In the name of all of us who come to you, I say “THANK YOU” with capital letters, but it means so much more than that.

“I thank you from the bottom of my heart, but for me my heart has no end. My gratitude is that deep.” … unknown author

C.B., Guatemala 20

Peer Reviews From Other Doctors

Read here what other doctors have to say about this doctor.

Charity, Public Service, Donations

Public service and caring for the less fortunate is a way of life in the Latin american culture

Patient Success Stories

Every patient has different circumstances and expectations. We will tell you about an interesting and unusual case that the doctor was able to turn around with unexpectedly outstanding results.