About Allianz Research Institute

About Us

David N. Pham, M.D., F.C.C.P.

Dr. Pham moved to Huntington Beach, California when he was 8 years old from Vietnam. He went to University of California at Irvine for undergraduate education with a major in Biological Sciences with an emphasis on molecular biology and biochemistry.  He attended medical school at the University of Maryland at Baltimore. He received his training in Internal Medicine at Tulane University, Immunology Training at the National Institute of Health, National Institute of Allergy and Infectious Disease, and then University of Colorado for his training in Pulmonary and Critical Care.  While in Denver, he trained at National Jewish Health, number 1 in respiratory medicine as ranked by US News and World Report since 1998. His focus was on immune regulation of inflammation, scaring and healing of the airway in Asthma. He has been in practice over the last 22 years in pulmonary and internal medicine. Over the last 18 years he has focused on clinical research to help develop and bring new therapeutics to treat underlying asthma, COPD as well as other lung related diseases, cognitive and metabolic diseases. He has published in Asthma, COPD, Eczema, diabetes mellitus and COVID19. Since the SARS-COV2 pandemic he turned to working with monoclonal drug therapy, and creating mitigation protocols for tech and motion picture industry. His work during the pandemic has been recognized by several governmental agencies.

Eduardo Chang, M.D., M.B.A, M.P.H., F.C.C.P., F.A.C.P.

Dr. Eduardo Enrique Chang was born and grew up in Panama City, Panama. His roots traced back to Chinese and Spanish migrants that helped build the Panama Canal. He completed his Bachelor’s in Science degree in Biochemistry and Microbiology and his Medical Doctorate at Loma Linda University, California. Dr. Chang completed his specialty in Internal Medicine and fellowships in Pulmonology, Critical Care, Allergy Immunology and Sleep Medicine at Tulane University. He has been caring for patients with general lung disorders and running the intensive care units for over 22 years. His interest are in continuing medical education, advancement of medical science through research and education. His topics of interests are lung immunology, COPD, asthma, and Intensive Care Medicine. Currently Dr. Chang is an Adjunct Assistant Clinical Professor at Indiana University School of Medicine, and he previously was a Clinical Assistant Professor of Medicine at the University of Texas Medical Branch, Houston. Dr. Chang is a Fellow of the American College of Chest Physicians and a Fellow of the American College of Physicians. He is a member of The American College of Healthcare Executives, Member of the Harris County Medical Society and served as officer at the Hispanic American Medical Association of Houston. He has been awarded a lifetime membership by Beta Gamma Sigma, International Business Honor Society while at The University of Texas System during his graduate studies in Business Healthcare Management where he earned his MBA. He holds several awards for community services and teaching contributions in medical education and has served as a speaker for Boehringer Ingelheim, American Lung Association, AWAKE among others.

Esther Segura, M.D.

Dr. Segura is an active patient advocate in healthcare administration and population health management. Dr. Segura’s medical training in Mexico and work in community clinics helped her understand what actions needed against disparities in healthcare and highlighted needs in medical care within underserved populations in the USA.
She has worked in several healthcare systems in the greater Houston area, including Harris Health Systems, UTMB, Texas Children's Hospital, and Houston Methodist Hospital. Her experience includes customer care, service recovery, patient satisfaction, and as a cultural ambassador. Providing proper family expectations to match and align goals of care and ensure the best possible outcomes. She has worked within the Latino communities by facilitating communication in diverse areas and providing social support. Dr. Segura has written and participated in research projects and literature reviews that have been published in several medical journals. Her participation in medical education projects contributed to research grants that promote the advancement of science and clinical research that benefit patients.

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