Staff Members
Julie Lubisi
Executive Director
Public Health Association of Nebraska
Julie joins PHAN with over 20 years of experience advancing public health locally and globally through advocacy, research, evaluation, and community-based practice. Her interdisciplinary work has focused on HIV/AIDS, gender-based violence, child welfare, immigrant and refugee health, and workforce development. She is currently a PhD candidate in Health Promotion and Disease Prevention Research at the University of Nebraska Medical Center College of Public Health, where her research examines how healthcare systems can better respond to gender-based violence.
Julie is passionate about strengthening the public health workforce, advancing advocacy, and ensuring the sustainability of programs and research that address pressing community needs. She looks forward to collaborating with PHAN’s members and partners to co-create solutions for a stronger, more resilient future for all Nebraskans. Outside of work, Julie enjoys cheering on her daughter at volleyball games and planning her next travel adventure.
Haley Pertzborn
MPH Practicum Student
George Washington University
Dr. Haley Pertzborn is Chief Executive Officer of the Nebraska Pharmacists Association. She earned her PharmD from Drake University with a concentration in global and comparative public health and previously served as the Association’s Executive Fellow in Association Management and Leadership. Her experience spans association management, health policy, member engagement, and public health initiatives, including work with OutcomesMTM and the Iowa Public Health Association. She is currently pursuing her MPH and Certified Association Executive (CAE) credential, with a strong commitment to advancing pharmacy and public health through advocacy and professional leadership.
Nadeen Osman
Collaborative Intern
University of Nebraska at Omaha
Nadeen Osman is a senior at the University of Nebraska Omaha, studying public health, ethics, and human rights. She plans to attend law school to focus on international public health policy and reducing global healthcare disparities.
At UNO, Nadeen serves as the Newman Civic Fellow through Campus Compact and is president of the Public Health Student Association, promoting public health on campus and in the Omaha community.
As a member of the Public Health Association of Nebraska, she looks forward to connecting with professionals across the field and encouraging more students to explore public health opportunities at both local and national levels.
Charlotte Ritchie
MPH Practicum Student
University of Nebraska Medical Center College of Public Health
Charlotte Ritchie is a general psychiatry resident at the University of Nebraska Medical Center. She has a professional interest in child mental health and plans to pursue a fellowship in child and adolescent psychiatry beginning in July 2026. While in residency, she is concurrently completing a Master of Public Health with a concentration in Maternal and Child Health. She is passionate about exploring the intersection of clinical psychiatry and public health, with a particular interest in improving mental health for communities and strengthening the systems that support care. As an intern with the Public Health Association of Nebraska, Charlotte looks forward to supporting the organization’s work and learning more about public health practice in Nebraska and beyond. Outside of her professional work, she enjoys teaching yoga, attending concerts, and hiking in the Pacific Northwest, which she considers home.
Alexis Montecuollo
Foundry Intern
University of Nebraska at Lincoln
Alexis Montecuollo is a third-year student at the University of Nebraska - Lincoln. She is studying Microbiology with a focus in Humanities in Medicine, and plans on furthering her education in Public Health in graduate school. Some of Alexis' interests include health literacy, epidemiology, retail pharmacy, and the therapeutic advancement of art in hospitals. Working with the Public Health Association of Nebraska, Alexis hopes to advance public health communication and increase policy awareness in Nebraska, as well as provide a connection between the work of health professionals to the average person.
Julieta Arguelles
MPH Practicum Student
University of Nebraska Medical Center College of Public Health
Dr. Julieta Arguelles is an international physician, public health professional, and clinical researcher with a focus on basal cell and squamous cell carcinoma. She earned her medical degree in 2021 from Universidad Anáhuac in Mexico and has since worked on multiple cancer clinical trials. She is currently pursuing a Master of Public Health in Health Policy and Administration at the University of Nebraska Medical Center and is the founder of LATIMGS, a national initiative with a mission to expand access to U.S. clinical training, research, and residency pathways for Latin American international medical graduates and students. In recognition of her leadership and impact, Dr. Arguelles was selected as the National Hispanic Medical Association International Medical Graduate of the Year in 2025.
Connecting Public Health in Nebraska for over 70 Years
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