Blue Downward Triangle

Our Team


Horizon Oncology Center provides quality, compassionate care, respecting the individual needs of our patients and their families. Our providers are consistently known for their excellence in oncology practice as well as exhibiting a delicate atmosphere of trust and concern.

Wael A. Harb, MD

Chief Medical Officer &
Director of Clinical Research

Dr. Wael Harb completed his medical training at the University Of Damascus School Of Medicine. He developed his specialization in both Internal Medicine and Medical Oncology at the Indiana University School of Medicine, and is board certified in both.

In 2001, Dr. Harb opened Horizon Oncology Center to serve the Lafayette community. The center has undergone continued growth since its conception and in 2010 Dr. Harb formally organized his partnering providers under the Horizon Oncology Center. Dr. Harb currently holds faculty positions at both Indiana University and Purdue University. He serves as Chairman of Community Cancer Network, a nonprofit organization that helps cancer patients, and as the coordinator for the Lafayette Medical Education Foundation. Dr. Harb dedicates himself to get to know each patient on a personal level to find the best treatment plan possible.

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Ajita Narayan, MD, PHD

Dr. Ajita Narayan completed her medical training at Goa Medical College in Goa, India. She pursued a doctoral program (PhD) at Tulane University Medical Center in Biochemistry and then completed her Post-doctoral Research Fellowship in Head and Neck Cancer Biology at the University of Michigan.

Dr. Narayan specialized in Internal Medicine at St. Luke’s Hospital in Missouri. Her Medical Oncology and Hematology specialization was at the University Hospitals Case Medical Center in Cleveland, and she is board certified in all three.

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Gilbert Almanza, AOCNP

As a Veteran of the Gulf War, Desert Storm and Desert Shield, Gilbert decided to pursue a career in oncology medicine. Gilbert obtained his Bachelor of Science Degree in Nursing from Purdue University and his Master of Science Degree in Nursing from Indiana University at Indianapolis.

He began his career working as a Staff RN and later a Chemotherapy Infusion Nurse where he obtained his Certification as an Advanced Oncology Nurse in 2000. In 2006 Gilbert became certified as an Advanced Oncology Nurse Practitioner and now has been working alongside Dr. Wael Harb at Horizon Oncology Center since 2008.

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