2016 – 2017 Executive Committee



Steve Waterman, MD—EIS ‘81

Steve serves as CDC’s Dengue Branch Chief in the Division of Vector-borne Diseases, overseeing direct applied research and prevention and control activities for Dengue and other Aedes mosquito transmitted diseases such as Zika. Steve credits EIS with helping to define his career and has enjoyed the chance to mentor EIS Officers over the years. His service to the EIS Alumni Association is an extension of his love for the EIS Program and his belief in the current strength and future potential of the alumni network.



Arthur (Art) Liang, MD, MPH—EIS ‘80 (2015-2018)

Art currently serves as CDC’s Senior Advisor for Food Safety in the Division of Foodborne, Waterborne, and Environmental Diseases where he helps maintain working relationships with the food safety communities in industry, academia, at FDA, and at USDA. He has been instrumental in helping the EIS Alumni Association define its mission and vision and bring its activities in line with both—which includes fervent support for the EIS Program’s role in ‘next generation’ public health workforce development.



Christina Mikosz, MD, MPH—EIS ‘11 (2014-2017)

Christina currently serves as a Medical Officer in the Division of Unintentional Injury Prevention, as part of the CDC team combating the nation’s opioid overdose epidemic. She completed EIS as a field officer assigned to the Los Angeles County Department of Public Health and then worked for several years post-EIS at the Alameda County Public Health Department in the Bay Area prior to returning to CDC. Christina considers EIS to be a defining experience in her career and she is happy to give back to the program by serving on the EISAA Executive Committee, including serving as the Alumni Association Secretary/Treasurer during 2015-2017.

At-large representatives


Laurene Mascola, MD, MPH—EIS ‘82 (2015-2018)

Before recently retiring, Laurene served as the Chief of Acute Communicable Disease Control at the Los Angeles County Department of Public Health. As an EIS Officer, she split her time between the Division of STD Prevention and a field assignment in L.A. County, working on issues ranging from congenital syphilis to Listeriosis. She liked the field so much, she decided to stay. Laurene served the L.A. County Department of Public Health for over 30 years and loves to talk to EIS Officers about field opportunities.


Doug Hamilton, MD, PhD—EIS ‘81 (2016-2019)

Doug joins the EIS Alumni Association’s Executive Committee in June 2016 to begin serving a three-year term as an at-large representative. He currently serves as a Quarantine Medical Officer in the Division of Global Migration and Quarantine after having served 15 years as EIS Chief and three years in the Indian Health Service’s Portland Area Office. During EIS, Doug was a field officer assigned to the Connecticut Department of Public Health where he is best-known for helping roll out vaccine campaigns at universities using a bullhorn.


Tina Tan, MD, MPH—EIS ‘00 (2016-2019)

Tina serves as a State Epidemiologist/Assistant Commissioner for the New Jersey Department of Health’s Division of Epidemiology, Environmental and Occupational Health, where she oversees communicable disease, environmental, and occupational health surveillance, investigation, and response activities as well as the state’s SEER cancer registry. She’s excited to be joining the Executive Committee this year and looks forward to representing the voice of alumni currently based in the field. As a seasoned EIS supervisor, Tina has kept her finger on the pulse of the EIS Program and looks forward to continuing to support it as it evolves and adapts to new public health demands.

Class of 2014 Representative


Evelyn Twentyman, MD, MPH – EIS ‘14

Evelyn serves as Medical Epidemiologist with the CDC Division of Reproductive Health Global Reproductive Health Evidence for Action Team, partnering with country governments to enhance surveillance, response, prevention and intervention for maternal and perinatal deaths. As an EIS officer on this same team, she loved building stakeholder collaborations to improve public health programming and outcomes, and stayed on to advance these efforts. She is passionate about connecting people, and is looking forward to supporting EIS alumni and current officers by building up mechanisms and infrastructure for connection and mentorship through her role as Outgoing Class Representative.

Ex-Officio Members

Immediate Past President

Neil Gupta, MD, MPH—EIS ‘10

Neil works in CDC’s International Infection Control Program in the Division of Healthcare Quality Promotion, supporting governments as they enhance laboratory, surveillance, and epidemiologic capacity to identify and control outbreaks of healthcare-associated infections. He served as EISAA President from 2015-2016 and made it his primary mission to improve the EIS Alumni networking experience. Under his leadership, EISAA launched a social-networking platform exclusively for alumni that centralizes the online directory and job board in one place, a space that Neil hopes will build greater camaraderie among alumni and contribute to more support for the EIS Program. Neil credits EIS with changing his career trajectory and chose to serve on the Executive Committee as a way of thanking the Program for his career in public health.

EIS Program Representative


Josh Mott, PhD, MA, EMT-P—EIS ‘98

Josh currently serves as Chief of the EIS Program and Epidemiology Workforce Branch, relocating back to the states in 2015 to take the post after having worked in the CDC-Kenya office. Josh is very proud of the fact that the EIS Program recently received international accreditation as an outstanding Field Epidemiology Training Program. He enjoys working with the EIS Alumni Association to identify new ways to link alumni with prospective applicants who want to know more about what EIS Officers actually do and what roles they play in public health upon completion of the fellowship.

CDC Foundation Representative


Diana Robelotto

Diana serves as the CDC Foundation’s Director of Alumni Affairs and operates as the EIS Alumni Association’s primary liaison with the Foundation. She joined the CDC Foundation in 2014, bringing with her 11 years of experience at the American Cancer Society. She played a large role in helping the EISAA secure grant funding from the de Beaumont Foundation, which has enabled the Association to expand its roles in EIS Program recruitment and alumni networking.  She helps maintain a database of EIS Alumni and is always ready to help put Alumni in touch with recruitment or meet-and-greet opportunities in their geographic areas.