Meet Our Doctoral Students
Lexi Ayala (She/Her/Hers)
Ed.D. Student, Nursing Education (Distance Learning)
Lexi's professional experience includes pediatric nursing, nursing leadership, and nursing professional development. She is passionate about closing the gaps between nursing practice, education, and research.

Research Discipline/Bio
Lexi is an EdD candidate in the TC Online Nursing Education program. Her research interests include nursing professional identity and academic nurse educator competencies.
Lexi's professional experience includes pediatric nursing, nursing leadership, and nursing professional development. She is passionate about closing the gaps between nursing practice, education, and research.
Educational Background
Master of Science in Nursing, Health Leadership, University of Pennsylvania, 2021
Bachelor of Science in Nursing, Nursing, 2016
Publications/Exhibitions
Dickinson, J. K., Wentzel, J. A., Schwenk, J., & Ayala, L. A. (2024). Prevalence of nursing theory citations in non-nursing publications. Nursing Outlook, 72(6), 102303. https://doi.org/10.1016/j.outlook.2024.102303
Last Updated: Nov 4, 2024
Isaac Ayereka (He/Him/His)
Ed.D. Student, Health Education

Research Discipline/Bio
Isaac is an Ed. D. candidate in the Health Promotion and Education program. His current research focuses on using the health belief model and the social-ecological model as framework to explore the health behavior of African-born immigrant mothers in WA State toward the utilization of cervical cancer prevention services. He is the Co-Chair of the Student Committee of the American Public Health Association. A Research Affiliate at the Center for Health Policy, Columbia University. He is a Research Assistant at the Laurie M. Tisch Center for Food and a Graduate Assistant at the Center for Accessibility Resources & Disability Services. He is a Trainee Associate Member at the Cancer Research Training & Education Coordination Core of the Herbert Irving Comprehensive Cancer Center. He is also a team member of an Electronic Adolescent Reminders for Completion of HPV Vaccination - Uganda: Randomized Controlled Trial. He is in a mentorship program with the American Society of Clinical Oncology.
Educational Background
Master of International Development Administration, Western Michigan University, 2021
Master of Science, Community Health and Development, University for Development Studies, 2017
Master of Science, Environmental Science, Policy and Management, Institute of Local Government Studies, 2015
Bachelor of Arts, Integrated Development Studies, University for Development Studies, 2008
Honors/Awards
Harkness Fellowships-RS, 2023
Graduate Student Fellowship, World Anti-Bullying Forum 2023, University of North Carolina
HIV Research scholarship, University of Washington ,2022
Graduate Student Assistantship, Western Michigan University, 2021
Netherlands Government Fellowship (NUFFIC), University of Twente (ITC), 2014
Last Updated: Feb 12, 2025
Adriana Carrieri
Ph.D. Student, Behavioral Nutrition

Research Discipline/Bio
Adriana is a Ph.D. candidate in the Behavioral Nutrition program. Her current research focuses on exploring how young adults with celiac disease transition from high school to college, and the impact of this transition in their quality of life and gluten-free diet adherence. Adriana received a research award from The Celiac Disease Foundation for her dissertation. During her journey at Teachers College, Adriana served as a research assistant to Dr. Randi Wolf helping in the development of a curriculum for a large NIH grant aiming to test the impact of new gluten detection technologies in intestinal healing among individuals with celiac disease. She also served as a course assistant for two semesters in the Nutrition Epidemiology course, and for one semester in the course Analysis of Current Literature in Nutrition. Among her research interests are strategies for effective dietary behavior changes among individuals with chronic diseases, including the use of technologies.
Educational Background
Ph.D., Behavioral Nutrition, Teachers College, Columbia University, Expected 2025
Residency Program, Clinical Nutrition and Gastroenterology, University of São Paulo (Brazil), 2017
B.S., Nutrition, University of São Paulo (Brazil), 2015
Honors/Awards
Awarded a research grant by The Celiac Disease Foundation, 2024
Last Updated: Oct 3, 2024
Cecilia Chen
Ph.D. Student, Behavioral Nutrition

Research Discipline/Bio
Cecilia Chen is a Ph.D. candidate at Teachers College, Columbia University, and a Registered Dietitian (RD) specializing in gastrointestinal health and disordered eating. Her current research, in collaboration with the Celiac Disease Center at Columbia University, focuses on assessing personality factors in celiac disease management among adolescents. Cecilia explores the intersection of nutrition and mental health and aims to translate scientific research into practical applications for promoting healthy lifestyles. She also explores the potential integration of artificial intelligence in the field of nutrition.
Educational Background
Ph.D., Behavioral Nutrition, Teachers College, Columbia University, Expected 2025
Dietetic Internship, College of Human Ecology, Cornell University, 2022
Ed.M., Human Development and Psychology, Harvard University, 2021
B.S., Clinical Nutrition, University of California, Davis, 2020
B.S., Psychology, University of California, Davis, 2020
Last Updated: Sep 30, 2024
Srimayee Dam (She/Her/Hers)
Ed.D. Student, Health Education

Research Discipline/Bio
Srimayee serves as a Peer Health Educator at Columbia Health, acquiring a New York State-Department of Health certification. She has also been accepted as a Peer Reviewer for the Cambridge Educational Research e-Journal (a graduate-led initiative based out of the Faculty of Education, University of Cambridge). Her past affiliations include the SMILE Lab at Teachers College; UB Alberti Center for Bullying Abuse Prevention; and Youth, Media & Wellbeing Research Lab, Wellesley College. Srimayee's primary focus entails understanding of youth bullying behaviors and bystander intervention programs in NYC public schools. She recently co-authored a book chapter on "Bystander Intervention in Cyberbullying" with Nova Science Publishers (Nova Medicine and Health), and her second publication with MDPI (Multidisciplinary Digital Publishing Institute) is currently under review.
Educational Background
Master of Science in Education, Childhood Education, Hunter College (CUNY), 2020; Master of Philosophy, Foreign Policy Studies, University of Calcutta (India), 2012; Master of Arts, South & Southeast Asian Studies, University of Calcutta (India), 2009; Bachelor of Arts, Political Science, University of Calcutta (India), 2006.
Publications/Exhibitions
Dam, S. (2024). Bystander Intervention in Cyberbullying. In M. Wright (Ed.), The Psychology of Cyberbullying (pp. 273-287). Nova Science Publishers.
Last Updated: Jun 4, 2025
Sotos Djiovanis
Ed.D. Student, Nursing Education (Distance Learning)
Prior to becoming a nurse educator, Sotos spent 19 years in the Naples Philharmonic Orchestra as a professional oboe and English horn player. He also has performed in state and national orchestras in Mexico and the Dominican Republic. Now, Sotos continues to play professionally on a part-time basis as English hornist in the Orlando Philharmonic Orchestra.

Research Discipline/Bio
Sotos G. Djiovanis is a doctoral candidate in Nursing Education at TC. He has been a trauma, orthopedics, and community health nurse in Central Florida since 2015. He is full-time faculty at the University of Central Florida, where he helped to inaugurate Dedicated Education Unit clinicals. Sotos is faculty sponsor of the university's Hispanic Nursing Student Organization, Unidos. He also co-leads an annual intercultural study abroad to Chiapas, Mexico, where he and his students provide public service clinics for women, children, and Indigenous people. Research areas include nursing education, communication, and simulation.
Prior to becoming a nurse educator, Sotos spent 19 years in the Naples Philharmonic Orchestra as a professional oboe and English horn player. He also has performed in state and national orchestras in Mexico and the Dominican Republic. Now, Sotos continues to play professionally on a part-time basis as English hornist in the Orlando Philharmonic Orchestra.
Educational Background
-Master of Science in Nursing, Nursing Education, University of Central Florida, 2020
-Bachelor of Science in Nursing, Accelerated Cohort, University of Central Florida, 2015
-Doctor of Music, Oboe Performance, Florida State University, 2005
-Master of Music, Oboe Performance, Cleveland Institute of Music-Case Western Reserve University, 2001
-Bachelor of Music, Oboe Performance, Cleveland Institute of Music-Case Western Reserve University, 2000
Honors/Awards
-Robert Wood Johnson Foundation Scholar, New Careers in Nursing, 2014-15
-Noble Knight Nurse Awards, Education Category, University of Central Florida, College of Nursing, 2021
-Northern Star Award, Orlando Regional Medical Center, 2018
Publications/Exhibitions
Dickinson, J. K., Posesorski, R. E., Djiovanis, S. G., & Brady, V. J. (2024). Impact of negative or stigmatizing messages on diabetes outcomes: An integrative review. The Science of Diabetes Self-Management and Care, 50(2), 167.
Djiovanis, S. G. (2024). In-situ provider telephonic calling simulation for clinical nursing students. Teaching and Learning in Nursing, 19(1), e43–e43.
Djiovanis, S. G. (2023). Stroke awareness and prevention for double reed musicians. The Double Reed, 46(2), 127-129.
Last Updated: Oct 1, 2024
Ya Gao (She/Her/Hers)
Ph.D. Student, Behavioral Nutrition

Research Discipline/Bio
Ya Gao is a Ph.D. candidate in Behavioral Nutrition at Teachers College, Columbia University, with a focus on how to promote diet adherence and quality of life for individuals with gastrointestinal disorders. Her current research explores the relationship between gluten-free diet adherence and quality of life in pregnant women with celiac disease. Ya also serves as a research assistant to Dr. Randi Wolf on the NIH-funded GLUTECH trial, in collaboration with the Celiac Disease Center at Columbia University Irving Medical Center, which investigates remote dietitian follow-up, with and without novel gluten detection technology, to improve clinical management of celiac disease. With a background in food science, she is also interested in advancing food standards through research and development, particularly for individuals with specialized dietary needs.
Educational Background
Ph.D., Behavioral Nutrition, Teachers College, Columbia University, Expected 2027
M.S., Human Nutrition, Columbia University, 2022
B.S., Food Science and Technology, University of California, Davis, 2020
Last Updated: Jun 8, 2025
Daeshawn Hall
Ph.D. Student, Special Education: Deaf and Hard of Hearing
Through my doctoral studies, I have strengthened my ability to think critically and conduct inquiry-based professional learning, emphasizing research-driven decision-making. My work in the program has deepened my understanding of how to coach teachers to embrace a teacher-as-researcher approach, making them more assessment-driven to support student growth. I aim to create inclusive, data-informed learning environments that meet the diverse needs of students with disabilities.

Research Discipline/Bio
I am a PhD candidate specializing in Deaf and Hard of Hearing education at Teachers College, Columbia University, and a Special Education Assistant Principal in NYC. I bring extensive experience as a classroom teacher, itinerant Deaf and Hard of Hearing related service provider, and unit coordinator. My research focuses on teacher professional learning, preservice mentoring, and leadership in special education. I have mentored both preservice, in-service teachers and interns.
Through my doctoral studies, I have strengthened my ability to think critically and conduct inquiry-based professional learning, emphasizing research-driven decision-making. My work in the program has deepened my understanding of how to coach teachers to embrace a teacher-as-researcher approach, making them more assessment-driven to support student growth. I aim to create inclusive, data-informed learning environments that meet the diverse needs of students with disabilities.
Educational Background
EdM, Special Education, Teachers College, Columbia University, 2013
School Building Leader Certification, College of St. Rose, 2020
BA, Skidmore College, 2011
Department Award, Teachers College, Columbia University, 2018-2023
Julie Louise Franck Fellowship, Teachers College, Columbia University, 2017
Graduate Minority Scholarship, Teachers College, Columbia University, 2013
E. E. Farrell Scholarship, Skidmore College, 2012
Last Updated: Oct 24, 2024
Ara Nazmiyal
Ph.D. Student, School Psychology
Dissertation Advisor: Benjamin Lovett

Research Discipline/Bio
I am a doctoral candidate in School Psychology at Teachers College, Columbia University, with a primary research focus on neurodevelopmental disorders. My dissertation investigates the diagnostic implications of incorporating emotion dysregulation into Attention-deficit/hyperactivity disorder (ADHD) DSM criteria. I have extensive experience conducting neuropsychological assessments across diverse clinical, educational, and research settings, including Growing Minds Psychology and Mount Sinai. For my internship year, I will be at Weill Cornell’s neurosurgery center, where I will further develop expertise in neuropsychological assessment within a medical setting.
Educational Background
Master of Arts in Educational Psychology: Schooling, Teachers College 2023
Master of Education in School Psychology, Teachers College 2025
Master of Philosophy, Teachers College 2025
Publications/Exhibitions
Rozenblatt, S., Axel, E., Nazmiyal, A., (2025, March 3). Is it dyslexia? [Conference presentation]. Everyone Reading Annual Conference, New York, NY, United States.
Pagirsky, M., Nazmiyal, A., McLeod, S., Wong, O., (2025) Detecting children who "fly under the radar": The role of the neuropsychologist in diagnosing Autism Spectrum Disorder (ASD) [Continuing education credit]. NYCEL.
https://learning.nycel.org/Public/Catalog/Details.aspx?id=sccT0LaEXzgbaH%2b8EN7pDQ%3d%3d
Nazmiyal, A., Pagirsky, M., Emery, K., (2024) The lack of dyslexia coursework in psychology training programs. American Academy of Pediatric Neuropsychology 10th Annual Conference, Virtual.
Pagirsky, M., Nazmiyal, A., Emery, K., (2024, January 9). What do school psychologists and mental health professionals know about dyslexia? [Conference presentation]. Everyone Reading Annual Conference, New York, NY, United States.
Lovett, B. J., Schaberg, T., Nazmiyal, A., & Spenceley, L. M. (2023). How Do School Psychologists Address Issues of Effort, Motivation, and Honesty During Evaluations? Journal of Psychoeducational Assessment, 41(6), 603-618. https://doi.org/10.1177/07342829231175938
Schaberg, T. M., Nazmiyal, A., & Lovett, B. J. (2023). How do school psychologists address issues of effort, motivation, and honesty during evaluations? [Poster presentation]. Teachers College: Institute for Psychological Science and Practice (IPSP).
Fitzgerald, K., Nazmiyal, A., Lovett, B., (2022). Construct validity of subjective and objective ADHD symptoms in college students. 93rd Eastern Psychological Conference, New York, NY.
Nazmiyal, A. (2021). Picky eating in children: Associations with IQ and executive functioning. Washington University in St. Louis Undergraduate Research Fair, St. Louis, MO
Last Updated: Jun 12, 2025
Courtney Parent (She/Her/Hers)
Ed.D. Student, Health Education

Research Discipline/Bio
While obtaining her EdD in Health Promotion and Education at TC, Courtney is working as an Administrative Associate to Dr. Jeanne Brooks-Gunn, a Graduate Research Assistant to Dr. Sonali Rajan, and a Research Assistant at the University of Michigan. Her dissertation research focuses on the health and well-being of farmers in Maine, a topic driven by her lived experiences growing up on her family's potato farm in northern Maine. As she continues to learn from and be mentored by researchers who influence policy, Courtney hopes to use such training to improve the health of farmers and their families.
Educational Background
Master of Arts, Developmental Psychology, Teachers College at Columbia University, 2022.
Bachelor of Arts, Psychology, University of New England, 2019.
Honors/Awards
Julie Fisher Cummings Scholarship, Teachers College at Columbia University, 2024.
Susan J. Hillman Science/Math Education Award, University of New England, 2019.
Last Updated: Jun 12, 2025
Juliya Pattammady
Ph.D. Student, Special Education: Intellectual Disability/Autism

Research Discipline/Bio
My research interests focus on special education, early childhood development, and family/caregiver experiences particularly for families with a young child with autism. My dissertation project is a multi-methods study focused on examining the effects of a randomized control trial of a group-based psychoeducation intervention for parents of preschool-aged children with autism and developmental delays (Incredible Years for Children with Autism and Language Delays); specifically to understand how parents learn and use taught strategies throughout the intervention. Before pursuing my doctorate, I worked as a first-grade special education teacher and kindergarten teacher, experiences that have significantly shaped my research approach.
Honors/Awards
Provost Dissertation Research Awardee; Council for Exceptional Children - Doctoral Student Scholar
Last Updated: Oct 28, 2024
Emily Romero (She/Her/Hers)
Ed.D. Student, Health Education
Dissertation Advisor: John P Allegrante

Research Discipline/Bio
Since 2020, Emily K. Romero has served as a data analyst at ICAP at Columbia University’s Mailman School of Public Health while concurrently pursuing her EdD in Health Education. In this role, she has supported more than six nationally representative, population-based surveys across sub-Saharan Africa, designed to evaluate the impact of PEPFAR-supported HIV prevention, care, and treatment programs. Beyond her core responsibilities, Emily has led in-country capacity-building and data analysis workshops throughout the region. Her research interests center on behavioral cardiovascular health, with a particular focus on the influence of nutrition and physical activity. She is especially interested in exploring how predisposing factors—such as language and obesity—affect health outcomes across diverse populations. She brings expertise in data management, statistical analysis, cardiovascular behavioral health research, and global health research.
Educational Background
Master of Science, Biostatistics, Mailman School of Public Health, 2020.
Bachelor of Art, Mathematics, Caldwell University, 2017.
Honors/Awards
Finalist in 3-Minute Rapid Fire Oral Competition, presented at the 2024 EPI | Lifestyle Scientific Sessions annual meeting of American Heart Association.
Publications/Exhibitions
Boudreaux, B. D., Romero, E. K., & Diaz, K. M. (2023). Sedentary behavior and risk of cardiovascular disease and all-cause mortality in United States adults with hypertension. Journal of Hypertension, 41(11), 1793–1801.
Edelman, D. S., Palmer, D. M., Romero, E. K., Chang, B. P., & Kronish, I. M. (2022). Impact of Native Language, English Proficiency, and Language Concordance on Interpersonal Care During Evaluation of Acute Coronary Syndrome. Journal of General Internal Medicine, 10.1007/s11606-022-07794-w.
Low, A., Wright, C., Platt, J., Chang, C., Mantell, J. E., Romero, E.K., Hoos, D., Mannheimer, S., Greenleaf, A., Castor, D., & El-Sadr, W. M. (2022). COVID-19 Vaccine Uptake and Factors Associated With Being Unvaccinated Among Lesbian, Gay, Bisexual, Transgender, Queer, and Other Sexual Identities (LGBTQ+) New Yorkers. Open Forum Infectious Diseases, 9(7), ofac260.
Duran, A.T, Romero, E.K. & Diaz, K.M (2022). Is Sedentary Behavior a Novel Risk Factor for Cardiovascular Disease?. Current Cardiology Reports. 10.1007/s11886-022-01657-w.
Liyanage-Don, N.A., Cornelius, T., Romero, E.K., Alcántara, C., & Kronish, I.M. (2021). Association of Hispanic ethnicity and linguistic acculturation with cardiovascular medication adherence in patients with suspected acute coronary syndrome. Preventive Medicine Reports, 23, 101455.
Romero, E.K., Abdalla, M., Thanataveerat, A., Alcantara,C., Kronish, I.M., Edmondson, D., & Shechter, A. (2020). Short Sleep Duration After Hospital Evaluation for Acute Coronary Syndrome Is Associated With Increased Risk of 6-Month Readmission. Psychosomatic Medicine, 82(1), 57–63.
Last Updated: Jun 3, 2025
Janet Schwenk
Ed.D. Student, Nursing Education (Distance Learning)

Research Discipline/Bio
I am a Registered Nurse with thirty years of experience in Medical-Surgical and Mental Health Nursing. I am board certified in mental health nursing and have worked as a mental health nurse for the past twenty years. I received my Master of Science in Nursing as a Nurse Educator from Chamberlain University and currently I am a doctoral candidate at Teacher's College, Columbia University. In addition, I am a Certified Nurse Educator (CNE) from The National League for Nursing's Academic Nurse Educator Certification Program. My current research interests focus on using standardized patients in simulation to enhance nursing student's therapeutic communication skills, particularly in the context of telehealth and remote patient care. I am passionate about advancing nursing education and improving patient outcomes through innovative teaching methods and technology.
Educational Background
Master of Science in Nursing, Nurse Educator, Chamberlain University, 2017.
Publications/Exhibitions
Dickinson, J.K., Wentzel, J.A., Schwenk, J., & Ayala, L.A. (2024). Prevalence of nursing theory citations in non-nursing publications. Nursing Outlook, 72 (6). 1-5. https://doi.org/10.1016/j.outlook.2024.102303
Franzese, J., Pecinka, K. & Schwenk, J., (2020). Alternative clinical experience through academic service-learning develops into a partnership for mental health rotation. Teaching and Learning in Nursing, 15. https://doi.org/10.1016/j.teln.2019.10.002
Last Updated: Nov 4, 2024
Ṣèyí Ṣẹ́gun
Ed.D. Student, Health Education

Research Discipline/Bio
Olúṣèyí (Ṣèyí )Ṣẹ́gun is a doctoral candidate in Teachers College Health Education (Ed.D) program. Olúṣèyí's research interest lie in psychoeducation for mental disorders and using artistic mediums to disseminate this information for mental health service uptake and stronger policies for psychiatrically disabled individuals in a culturally humble manner. Ṣèyí has worked throughout sub-Saharan Africa on global health projects from East Africa to West Africa. Currently, Ṣèyí serves United States veteran's at the Philadelphia VA Medical Center. Her portfolio includes case management and supportive counselling for veteran with Post-Traumatic Stress Disorder (PTSD) and older adults with cognitive impairment, such as dementia, and mental disorders. Ṣèyí is a licensed social worker in the Commonwealth of Pennsylvania.
Educational Background
Master of Science in Social Work, Columbia University, 2022.
Bachelor of Arts, Print Journalism and French, American University, 2012.
Honors/Awards
Schinke Innovation Award, Columbia University, 2021
Princeton in Africa Fellow, 2014
Teaching Assistance Program in France, 2013
Publications/Exhibitions
Ṣẹ́gun, O. (2024, September 27). Go where you are watered. Mad In America. https://www.madinamerica.com/2024/09/go-where-you-are-watered/
Last Updated: Oct 6, 2024
Pavita Singh (She/Her/Hers)
Ed.D. Student, Health Education
Dissertation Advisor: John P Allegrante

Research Discipline/Bio
I am a doctoral student at Teachers College, Columbia University where I am pursuing my EdD in Health Education. My dissertation research takes a narrative approach to understanding the reproductive desires of Sikh young women in the United States. In addition to being a TC student, I am also an instructor of Women's Health, a teaching assistant for Program Evaluation and Social Policy & Prevention (all three in my department), a Writing Fellow at the Graduate Writing Center (GWC), and a member of the Maternal and Reproductive Psychology Lab. Outside of TC, I am an instructor of Self-Care & Storytelling at Johns Hopkins University, a freelance writer and editor, the former executive director of Girls Health Ed, and the award-winning international bestselling author of two poetry books. I am driven by my personal and professional mission to help others realize their power to take ownership of their wellbeing, and I see unleashing the stories within ourselves as a powerful way to do so.
Educational Background
- Master of Public Health, Social & Behavioral Sciences, Yale University, 2014
- Bachelor of Arts, Gender & Sexuality Studies, Linguistics, Child & Adolescent Mental Health, New York University, 2012
Honors/Awards
Nautilus Award Silver Medal in Poetry for To All the Magic in Me, 2022
Publications/Exhibitions
Mademtzi, M., Singh, P., Shic, F., & Koenig, K. (2018). Challenges of females with autism: A parental perspective. Journal of Autism and Developmental Disorders, 48, 1301-1310.
Singh, P., Smith, M. V., Raba, C. M., Keller, J. (2016). Cyber-intimate partner violence and mental health outcomes in a sample of high school girls. MOJ Public Health, 4(3), 67-70.
Last Updated: Aug 28, 2024
We are delighted to announce the launch of our new online profiles for Doctoral Students at Teachers College.
If you are a currently enrolled doctoral student at Teachers College, please visit the profile submission page for more information on how you can create your own profile.