Former Students


Gloria Opoku Boateng

I was born in Berrien Springs, Michigan, but I spent the past 12 years of my life in Ghana, West Africa. I received my BSC computer Science from Valley View University, Ghana in 2010 where I concentrated my studies on Health IT. 

In my final year of college I researched the current situation of medical IT in Ghana, studying both physician and health centre-attitude towards health records and the potential of implementing a full-fledged technological health system.

With my findings and the exposure I had to health care facilities and data storage, I realized that Ghana as a country has to do more to understand information needs, design information models, deploy systems, and evaluate their impacts in the health sector.

I am particularly interested in how we can leverage the latest technologies and practices to directly empower and benefit healthcare facilities, patients and health workers. I aim to one day work with (or create) a health and patient focused company with the attitude of researching to aid health information system development and strengthen low and middle-income countries.

I hope to become an informaticist and then to leverage the implementation and efficiency of medical technology around the Globe 

My goals include helping set up efficient HIT implementation and public health data integrity, especially in underserved or marginalized communities around the world. 

I hope to eventually get a PhD degree in the Department of International Health at the Johns Hopkins Bloomberg School of Public Health.

Ida Ganao

Ida has over 10 years of experience as a Software Developer, specializing in Microsoft Access Applications, with comprehensive understanding of the life cycle of software development. As an IT consultant, she has worked for a variety of industries from housing and healthcare to agriculture and border patrol, where she gained a unique perspective on how to approach software application design based on business industry.

Heather Halvorson

Brendan Kroepsch

Brendan Kroepsch comes to Johns Hopkins University by way of the University of Colorado—Boulder, where his professional life began with a B.S. in Business Information Systems complimented by a Certificate in Entrepreneurial Studies in 2004. Brendan’s eye for opportunity, keen interest in health information technology (IT), and desire to work globally drew him to Kansas City, MO-based Cerner Corporation upon graduation. Brendan’s work at Cerner can be described as a series of professional and international firsts. On assignment in London for six months, he trained clinical end-users from the United Kingdom’s National Health Service on the intricacies of Cerner’s Electronic Health Record (EHR) systems, and also helped develop the first set of Web-based tutorials to go with them. Upon returning stateside, Brendan transitioned to testing UK-specific EHRs in the first Cerner group dedicated to doing so. It was during this testing that Brendan discovered an affinity for hospitals’ “front line” – the fast-paced Emergency Department – as well as Cerner’s IT solution for Emergency Departments, FirstNet. Brendan then focused on implementing FirstNet, as a Solution Architect, responsible for all phases of the job, in a diverse set of hospitals at home and abroad. Brendan’s projects took him as far as Dubai, where he spent a year setting up the first comprehensive EHR system for the United Arab Emirates' Ministry of Health. At Johns Hopkins, Brendan intends to build on this experience with coursework and research that combine his interests in health care, technology, and international enterprise. With the support of the Division of Health Sciences Informatics, Brendan hopes to move into a new career as an HIT Sub-Specialist focused on the technological side of Medical Tourism.

David Onime

Divya Ravi

Divya Ravi Portrait

Divya holds a Bachelors degree in Information Technology from the Vellore Institute of Technology, India, where she graduated as the University gold medalist. She spent a semester in Germany as an exchange student and research intern at the L3S Research Center, Leibniz University in Hannover. As a Microsoft Student Partner, she has led various novel technology awareness efforts.

Divya is deeply passionate about healthcare and has taken up health informatics related projects during the course of her undergraduate studies. She had a stint as a summer intern at iSOFT, India, where she worked on the National Health Services (NHS), UK project. Her major motivation towards studies in Applied Health Informatics has been her desire and ambition to work on an area which would better the lives of people the world over. She envisions being a global healthcare practice lead/healthcare strategic consultant leveraging the SME skills that she would acquire through this program.

On a personal note, having travelled over ten countries, Divya immensely enjoys backpacking and trotting the globe. She is also passionate about blogging, poetry writing, and playing the violin.

Michael Tien, MPH

Michael Tien Portrait

Michael Tien has worked as a web programmer, software tester, and freelance coder for many years.  He received a BA in Cognitive Science from Hobart College in 2006 and MPH in Global Health Leadership from the University of Southern California in 2008.   After graduating with his MPH, Michael worked as a research instructor in the department of occupational therapy at USC.  He was primarily responsible for overseeing informatics processes on the Pressure Ulcer Prevention in Spinal Cord Injury NIH study.   While at Hopkins, Michael wishes to integrate his past experience and knowledge to create informatics systems that utilize dynamic network analysis to improve research and patient care.  He hopes to pursue a doctorate.

Hanjie Wang

Hanjie Wang Portrait

Hanjie Wang is a Chinese medical student certified by ECFMG. He did much research on the treatment of autoimmune diseases by alternative medicine. His book was published by Elsevier last year. He thinks that alternative medicine provides great second opinions in treating autoimmune diseases and minimizes side effects brought by traditional western medicine. Hanjie is interested in developing a database of most human beings' health information so that everyone can access his/her private Electronic Medical Record just like a bank account. This will improve clinical care and facilitate scientific research tremendously. Hanjie also believes that cloud computing will bring revolutionary change in Telemedicine. He focuses on digitalizing and standardizing Telemedicine system, especially in developing countries. Many people will receive the best medical care without traveling abroad with this new technology.

Hanjie enjoys traveling and various outdoor sports in his spare time. Volunteering in charity organization is one of his biggest hobbies.

Fay Wong

Fay Wong Portrait

Fay Wong completed the Master of Science in Applied Health Sciences Informatics at the Johns Hopkins School of Medicine (JHSOM) in 2012. She also holds degrees in medicine, computer science and mathematics. She received her clinical, dry lab and wet lab training primarily on molecular, genetic, systematic and biophysical studies in cancer, cardiovascular disease, aging and development at the Johns Hopkins Medical Institutions, Chinese Academy of Science, No.3 Hospital of Peking University, BGI-SZ (Beijing Genome Institute at Shen Zhen) and Hong Kong.

In cooperation with Chinese Academy of Science-German Max Planck Society Partner Institute, Fay successfully developed the hydrogen-peroxide-specific ROS (Reactive Oxygen Species) indicator in monitoring the dynamic redox state with both adenovirus and lentivirus in vivo under physiological condition, which will be further developed as an organelle-specific fluorescent transgenic mice to deepen ROS study on live mammals.

Before coming to JHSOM, Fay served as a Biomedical Engineer in charge of Telemedicine Project and Medical Officer specialized in VCG (VectorCardioGraphy) in an International Medical Equipment Company in Singapore. Fay also got involved in a joint program with JHSOM, SGH (Singapore General Hospital) and Singapore DOD (Department of Defense) doing clinical trial on cardiac diseases and had an opportunity to practice in TCM (Traditional Chinese Medicine) and community clinics.

Fay has won numerous academic honors and awards such as in “SONY” National Electronic Design Contest, China Mathematical Modeling Competition as well as International ICM (Interdisciplinary Contest in Modeling) hosted by US NSA (National Security Agency) and NSF (National Science Foundation). Fay was also selected to Princeton-China Exchange Program at Princeton University, Harvard, MIT, Yale, Columbia, University of Chicago and etc. The softwares written by Fay was highlighted by Sunplus Technology CO., LTD to whom the technology was transferred.

Fay’s research focuses on personalized/individualized medicine spanning from NGS (Next Generation Sequencing), GWAS (Genome-Wide Association Study), human (epi)genomics, imprinting, genetic variant detection and clinical decision making. Fay has a long standing interest in developing software and hardwares to predict and auto-diagnose the development of complicated medical conditions with real-time data monitoring by medical equipment through implementing algorithms in AI (Artificial Intelligence) and statistics, based on background and knowledge in medicine, mathematics, computer science and electronics.


Hon Weng Chong, Visiting Scholar, University of Melbourne

Hon Weng Chong is a third year medical student from the University of Melbourne, Australia. Hon is a hobbyist programmer, gadget geek and video game enthusiast. His current field of interest is in the therapeutic use of online video games in pediatrics and is currently involved with the projectHOPE initiative at Johns Hopkins Children's Center. Being a hobbyist programmer Hon develops iPhone and Web applications in his spare time. He is experienced in PHP, JavaScript, HTML/CSS, C and Objective-C programming languages.

Eric Chow, MS Applied

Eric Chow Portrait

Eric received his BASc from the University of Toronto in Canada in Industrial Engineering specializing in healthcare systems engineering. His research work at a major trauma center in Toronto has focused primarily on clinical process optimization through the application of genetic algorithms and simulation in the operating rooms. Later, Eric went to the London School of Economics in the United Kingdom to pursue his MSc in Decision Sciences where he consulted to the NHS while working with a healthcare transformation firm.

Eric's research interests are focused on the application of optimization and artificial intelligence to support real-time resource allocation decisions in healthcare, ultimately with the goal of improving safety, access and quality of care for patients. In his free time, he enjoys mountain climbing and cycling.

Jean-Paul Chretien, MD, PhD


Currently a Preventive Medicine resident at the Walter Reed Army Institute of Research and an active duty Navy officer, Jean-Paul leads a Department of Defense effort to enhance public health surveillance networks in Former Soviet Republics through the Biological Threat Reduction Program. Previously he directed international programs for the DoD Global Emerging Infections Surveillance and Response System (2004-2008).

Jean-Paul graduated from the US Naval Academy (1996), where he was a Truman Scholar; received his MD, PhD (Epidemiology), and MHS (Biostatistics) from Johns Hopkins (2003); and served a Fellowship in Health Sciences Informatics at Johns Hopkins (2009). He is a Member of the Board of Directors, International Society for Disease Surveillance; Member, National Task Force on Global Disease Detection and Collaboration; Chair, Healthcare and Public Health Committee, Federal Knowledge Management Initiative; Term Member, Council on Foreign Relations; and Adjunct Assistant Professor, Uniformed Services University. He has authored 30+ peer-reviewed papers and book chapters and received the Best Publication of the Year Award from the International Society for Disease Surveillance (2008).

Pammie Crawford, M.Phil (Cantab) NLM Fellow, MS Research

After graduating with BA/BA degrees (university/departmental honors), Pammie moved to Padang, West Sumatra, Indonesia and served as a volunteer for a year through Stanford University’s Volunteers In Asia (VIA) Programs.  As a university lecturer at the Institut Keguruan dan Ilmu Pendidikan (IKIP Padang) she also served as the senior grant writer for IKIP’s 37th consecutive application to the Indonesian Department of Education to become a full-state university.  The grant was then selected and IKIP-Padang became Universitas Negeri Padang (State University of Padang) upgrading their status to full state university (including monies for new libraries, computer/research labs and faculty/student scholarships for continuing education). Besides her time in Indonesia she has also lived in Australia, England, Israel and Mexico.

Upon leaving Indonesia Pammie moved to the U.K. and earned an M.Phil. in International Development (Development Studies) at Cambridge University, England.  While there she was awarded the Cambridge Overseas Trust by His Royal Highness the Prince of Wales. She then served as director of a Californian non-profit organization providing free literacy and job training services. After expanding the program to include health literacy and education, Pammie was selected as a Harvard Presidential Scholar and moved to Boston, Massachusetts where she earned a SM degree in Population & International Health at Harvard University and was named a Graduate Associate of the Center for Population and Development Studies.  During her time at Harvard she worked for Mexico’s National Institute of Public Health (Instituto Nacional de Salud Publica) and on Latin American/Caribbean health policy for the Pan American Health Organization (PAHO), Regional Offices for the Americas of the World Health Organization (WHO).  Pammie also traveled to Ghana to advocate for health and human Rights of the poor and marginalized ethnic minorities in Accra. 

Currently a PhD Candidate at Johns Hopkins Bloomberg School of Public Health Pammie has served as a Johnson & Johnson Community Health Care Scholar providing monitoring and evaluation training to a clinic serving the un/under-insured of Arkansas/Oklahoma.  She worked for the World Bank focusing on health and social policies targeted toward the world's poorest populations.  Pammie was selected as a J. William Fulbright Fellow for 2007-2008 and lived in northern Canada as a Visiting Scholar at University of Northern British Columbia (UNBC) working on aboriginal health. She is very excited to commence training on health science informatics as she is confident this field will help her achieve her goal of serving the poor, marginalized and underserved throughout the world by improving population health.

Kyle Dunn, MHS, NLM Fellow

Ph.D. Candidate, Department of Health Policy and Management
Bloomberg School of Public Health

Kyle Dunn is establishing a career at the intersection of science, technology and health policy. While supporting contracts for the Department of Defense and the Department of Homeland Security, Mr. Dunn studied modern biosurveillance systems, incident response communication tools, and GIS-based infectious disease mapping and modeling programs. In 2008, he joined the Institute for Ethics at the American Medical Association in Chicago, IL, where he investigated physician attitudes towards personal health records and the potential pitfalls for PHR-centered public health reporting. The focus of Mr. Dunn’s doctoral research is environmental health policy—notably the advancement of risk assessment strategies through public health informatics. He is honored to participate in the National Library of Medicine training program, and recognizes NLM’s contributions to environmental health science. (NLM’s 1967 Toxicology Information Program pre-dated even the Environmental Protection Agency!) Mr. Dunn received a B.S. in Molecular, Cellular and Developmental Biology from Yale College and an M.H.S. in Health Policy from Johns Hopkins University.

Jordan Duval-Arnould, MPH, NLM Fellow

Jordan Duval-Arnould Portrait

DrPH Candidate, Department of Health Policy and Management
Bloomberg School of Public Health

Jordan Duval-Arnould holds an MPH from the Johns Hopkins Bloomberg School of Public Health (JHBSPH) where he concentrated his studies in Epidemiology/Biostatistics and Health Finance and Management. Jordan’s academic interests include- resuscitation science, use of medical simulation technologies, patient safety and quality, and health IT. These interests have been formalized during his time at Johns Hopkins through mentorship and several research projects carried out at the Johns Hopkins Medical Simulation Center. After completion of his MPH he worked with the Quality and Safety Research Group involved with the implementation of a large national collaborative effort to eliminate central-line associated bloodstream infections as well several data processing, analysis and display research efforts. He is currently a NLM fellow pursuing a DrPh in Leadership and Management within the Department of Health Policy and Management at the JHBSPH. Prior to coming to Johns Hopkins, Mr. Duval-Arnould worked designing and developing performance measurement and accounting software, as well as working and being involved with research activities at a major academic medical center in Chicago.

Elyse Lasser, MS Applied

Elyse Lasser Portrait

Elyse Lasser graduated with a BA in biology from Smith College in 2006, where she worked in a molecular evolution lab for three years. Her career began at IBM’s Global Healthcare and Life Sciences department. There she helped organize the Global Pandemic Initiative Steering Committee and worked with numerous clients in the healthcare field to set up more efficient datacenters. It was her work at IBM that sparked Ms. Lasser’s interest in the public health field.  She is interested in creating sustainable health information systems in developing countries to be used for education and disease prevention programs.

Henry Li, MS in Health Sciences Informatics Research

As a recent biomedical engineering graduate from Georgia Tech, most of my experience with informatics has been on the biological and chemical side, in academic labs. However, I have had extensive experience designing and developing web sites and web applications, with emphasis on usability, accessibility, and standards compliance. I am particularly interested in how we can leverage the latest web technologies and practices to directly empower and benefit patients and clinicians. I aim to one day work with (or create) a health and patient focused company with the attitude of an internet startup. Henry will begin his training as a physician at the Johns Hopkins School of Medicine in the fall of 2011.

Olusesan Makinde, MD, MS, MS in Applied Health Sciences Informatics

Olusesan Makinde Portrait

Olusesan Makinde is a Nigerian medical graduate with a master in epidemiology and medical statistics, earning both degrees at the University of Ibadan in Nigeria. He is a certified Oracle 10g database administrator (OCP) as well as a certified Project Management Professional (PMP). Dr Makinde has worked over the years as a Clinician, Quality Assurance Manager in a leading Nigerian Health Maintenance Organization and a Non-Governmental Organization which implemented a US President’s Emergency Plan for AIDS Relief (PEPFAR) sponsored program.

Dr Makinde’s interest in health informatics followed challenges of non-availability of data which almost stalled his research during his post-graduate training in epidemiology. He traced this problem to poor data archiving and lack of a proper electronic information system to store routine hospital information. This prompted him to pursue further training in Oracle database management upon completing his master degree.

Mano Ntayingi MS in Applied Health Sciences Informatics

With a major in Agriculture Engineering and Natural Resources Management and a concern in public health and livelihood issues threatening rural communities D.R .Congo, Mano Ntayingi has been engaged in the fields of Public Health, community empowerment and Environmental Management with an interest in focusing, later, on these issues into a PhD, after gaining proficiency and skills in data and information management system critical to build a strong M&E system. The last eight years, he has been involved in project design, proposal development and project implementation including not only monitoring project management and logistics, but also in designing and evaluating exercises on data management tools, improving water and sanitation systems in rural communities and computerizing project data and mapping program activities. He has provided technical support and training to government offices, worked as a consultant with national and international Non-profit Organizations, trained post-doctorate students working on Land, Territory and Forest Management in Remote Sensing and GIS. He is planning on developing capacity in networking and in building reliable and efficient data management system essential to support the development effort in Congo by providing accurate and timely information critical to build up an evidence-based decision environment required in the prevailing context of limited resources.

Olawande Ogunsanya, MBBS, MS in Applied Health Sciences Informatics

Olawande Ogunsanya Portrait

Olawande Ogunsanya received his MBBS degree from the College Of Medicine, University Of Ibadan in 2005. He has worked as a physician in the last 4 years. He is a also a co-facilitator of the Youth Empowerment Program (Yep!) where he speaks on youth-centered public health issues. His love for Information Technology and experience with rural medical practice spurred him to explore the application of IT to improve healthcare delivery. As an aspiring programmer, he aims to develop and implement solutions that ensure confidentiality, security and integrity while maximizing availability of information for public health. He is also desires to manage health IT operations for agencies and to conduct education and training in health informatics for developing and low resource nations.

Yair Rajwan, D.Sc., NLM Post Doctoral Fellow (2009-2011)

With more than 20 years of broad business experience, Dr. Rajwan (D.Sc.) has been engaged in sale, marketing, business development, market research, proposal response, consulting services, strategic planning, product life cycle, business case, enterprise architecture, research and development (R&D), systems engineering, training, customer support, and operation and maintenance. Dr. Rajwan interest is in a patient-centric healthcare evaluation and optimization. His objective is to enable patients to have open-access to consumer-oriented health informatics, via Medicine 2.0, “Cybermedicine” and e-Health, to make an informed decision with respect to their Personal Health Record (PHR), health plan insurance records, prescribed drug interactions, as well as personalized and effective treatments producing optimized outcomes.

Amer Saati, MD, MS

Amer Saati Portrait

Amer Saati is a physician informaticist who earned his medical degree from Damascus University, Syria. Upon graduation, Amer started his medical training in internal medicine and while being in the patient side, he started thinking about ways to improve healthcare by using new technologies, improving clinical workflow by inventing decision support systems which was the motive for him to pursue his masters in applied health science informatics at Johns Hopkins University. His capstone project was a systematic review of diagnostic decision support systems in ER. Upon his graduation, Dr. Saati worked as a post doctoral fellow in Geriatrics medicine with a specialty of informatics at Johns Hopkins Hospital focusing on transition of care and improve communication between hospital side and primary care physicians. Moreover, Dr.Saati decided to advance his career and enrolled in an applied informatics fellowship where he actively engaged in EHR/EMR implementations, CPOE improvement, evaluating health information exchange and finally serve as an assistant CMIO in New York area. He is currently holding a position of physician informaticist at North Shore LIJ Health System.

Terry Tsai, PhD, NLM Post Doctoral Fellow (2009-2011)

Terry received her bachelor’s degree in Information Technology, with a minor in Biology, from the College of William and Mary. She completed her MSPH in Public Health Informatics from Emory University and her PhD in Biomedical Informatics from the University of Washington. Her previous work dealt with combining epidemiologic and genetic data, which was the subject of her master’s thesis. Her PhD dissertation dealt with the creation of an analytical system for the purposes of functional SNP annotation. She has collaborated with the CDC, Emory’s Public Health Preparedness department, as well as the Fred Hutchinson Cancer Research Center on various projects. Terry’s current research interest continues to be exploring new intersections between Public Health Informatics and Bioinformatics.


Jacob Aaronson, DO, MAJ, MC


Dr. Jacob Aaronson graduated from NOVA Southeastern University College of Osteopathic Medicine in 1999 and completed his residency in Family Medicine at University of Texas Southwestern, Parkland where he was chief resident in 1999. He is board certified in Family Medicine.  Upon completion of his residency Dr. Aaronson resumed active duty in the United States Army, stationed at Fort Belvoir Virginia where he served as a staff physician for three years, full time Family Medicine residency faculty for one year – receiving the Family Medicine faculty of the year award, and one year as chief of clinical informatics. Next assigned to the Office of the AMEDD Surgeon General, he served as the principal clinical and functional advisor to the CIO as the lead for clinical systems integration and requirements during the world-wide deployment and sustainment of AHLTA, the DoD global electronic health record.   He was awarded the Mercury Award for recognition as the AMEDD IM/IT Officer of the year in 2006.  He has gained significant experience in systems integration, functional requirements definition and iterative development a global EHR, and process automation.   His areas of interest include service oriented architecture approach to managing distributed systems and databases, EHR optimization to improve point of care data visualization, decision support tools and clinical workflow, automation of clinical practice guidelines, applying the principals of informatics to understand and fully automate processes that potentially span multiple systems and domains, and improving the gap between clinical practice and public health needs for useful, accurate and timely data.   He has continued to maintain a clinical practice and lives locally with his wife and children.

Olayinka Ajayi, MBBS, MMed, MPH


Olayinka Ajayi has taken on the position of Veterinary Medical Officer/Interdisciplinary Scientist by the USDA.

Dr. Olayinka Ajayi completed his basic medical training at the University of Ibadan, Nigeria and also earned a Master of Medicine degree from the National University of Singapore in General Public Health with a focus on the Evaluation of Malaria Control Programs. He has significant experience in Primary Health Care, Occupational Health, and OBGYN in Nigeria and in Vanuatu, S.W. Pacific. In the United States, he worked extensively with community mental health agencies at the intersection of health administration, public mental health, and information systems.

Dr. Ajayi is passionate about sustainable initiatives in low resource settings. During his Nigerian National Youth Service, he successfully managed various health projects that mobilized community leaders and stakeholders to utilize local resources and manpower in solving their health problems, for which he received a State Honorary Award for outstanding performance and meritorious services. He held various leadership positions in Vanuatu including Directorship of Vila Central Hospital which is the country’s main tertiary hospital, and worked with donor agencies, missions and NGOs to setup sustainable competency/technology transfer projects such as the Vanuatu Ear Nose and Throat (VENT) program.

To further his career goals, he completed the Hopkins Tropical Medicine Certificate in 2005, and recently, the Hopkins MPH degree. As part of his response to challenges in sharing health information, he has acquired LAN and WAN networking competences including MCSE and CCNA certifications. Also, he is about to complete a Master of Science in Information Assurance at the Capitol College, Laurel, Maryland which is a National Center of Excellence in Information Assurance Education. He has a strong commitment to International Health, and Maternal and Child Health. His informatics research interests are Infectious Diseases Surveillance; Emergency Preparedness Response and Recovery, particularly Disaster Mental Health; and Clinical-Public Health Information Exchange and Integration.