2020 – 2021 Executive Committee


Benowitz, Isaac full3

Isaac Benowitz, MD—EIS ‘14 (2018-2021)

Isaac serves as a Medical Officer in CDC’s Division of Healthcare Quality Promotion where he investigates outbreaks of infectious diseases in healthcare settings. He joined CDC in 2014 as an EIS officer at the New York City Department of Health and Mental Hygiene where he investigated Legionnaires’ disease outbreaks and responded to Ebola in NYC and West Africa. He credits EIS with giving him incredible opportunities to learn on the front lines of public health and to impact people’s lives. He is excited to work with the EISAA to help support the EIS program and recent EIS graduates.


Gus Birkhead, MD, MPH—EIS ‘85 (2019-2022)

Gus is currently a professor of epidemiology at the University at Albany School of Public Health.  He spent most of his public health career since EIS at the New York State Department of Health, from which he retired in 2015 as deputy commissioner for public health.  He has been active in CSTE and ASTHO, and co-lead the development of the CDC/CSTE Applied Epidemiology Competencies.  He is honored to be serving on the EISAA Executive Committee, and hopes he can ‘pay back’ to EIS by bringing to the table his experience in public health education and in epidemiology practice at the state health department level.


Hammad Ali, MBBS, MPH, PhD—EIS ‘15 (2019-2022)

Hammad joined the CDC as an EIS officer in 2015 in the Division of Global HIV and TB. During EIS he had the opportunity to work on a number of infectious diseases including HIV, Ebola, Typhoid and TB. Hammad stayed with the division after completing EIS and is currently working as a medical epidemiologist in the Epidemiology and Surveillance Branch – working with various CDC country offices across the globe. Hammad thrives in bringing people together and wants to utilize the diversity of our alumni to improve EISAA through more collaboration.

At-large representatives

Kathleen F. Gensheimer, MD, MPH—EIS ‘81 (2020-2023)

Kathleen currently serves as Medical Officer in the Office of Analytics and Outreach, Center for Food Safety and Applied Nutrition, FDA.  She completed EIS as a Field Officer, assigned to the Maine Bureau of Health, Maine Department of Health and Human Services, where she was designated as State Epidemiologist on her first day on the job.  She remained as Maine’s State Epidemiologist for 28 years, active in CSTE, serving as the lead for influenza pandemic planning efforts.  She was recruited to FDA to lead a newly designated entity, the Coordinated Outbreak Response and Evaluation Network, overseeing FDA’s response to foodborne disease investigations.  She looks forward to serving on the Executive Committee, supporting EIS as a critical training program in an ever-changing world, where public health resources are continually eroded and where the breakdown of public trust remains as one of our biggest challenges.

Kimball, Ann Marie

Ann Marie Kimball, MD, MPH, FACPM—EIS ‘77 (2018-2021)

Bio information coming soon.


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.

Class of 2018 Representative

Amy Heinzerling, MD, MPH – EIS ‘18

Amy is currently an EIS officer assigned to the California Department of Public Health (CDPH), where she focuses on occupational and environmental health. During her time in EIS, she has participated in CDPH and CDC’s responses to COVID-19 and to e-cigarette, or vaping, product-associated lung injury (EVALI), as well as investigated topics including heat-related illness among California workers and an outbreak of silicosis in countertop fabrication workers. She looks forward to contributing her perspective as a recent EISO to the EISAA as the representative for the outgoing class.

Ex-Officio Members

Immediate Past President


Christina Mikosz, MD, MPH—EIS ‘11 (2017-2020)

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 and serving as President-elect during 2017-2018.

EIS Program Representative

Pevzner Eric8

Eric Pevzner, PhD, MPH—EIS ‘05

Eric currently serves as Chief of the EIS Program and Epidemiology Workforce Branch. Eric began working with CDC in 1996 while earning his MPH at the Rollins School of Public Health at Emory University. He has had several landmark opportunities including the opportunity to contribute to establishing a youth tobacco surveillance system to provide national and state level data to support youth tobacco prevention and control activities. He also contributed to CDC’s emergency response to H1N1 in Mexico and Ebola in West Africa. Since 2005, he has worked to conduct research and provide technical assistance to implement and evaluate policies and interventions in Africa and Asia to improve the diagnosis, treatment, and prevention of TB, HIV, and TB/HIV. 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 Scalera

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.

Past EISAA Executive Committee roster archive:

2019-2020 EISAA Executive Committee
2018-2019 EISAA Executive Committee
2017-2018 EISAA Executive Committee
2016-2017 EISAA Executive Committee
2015-2016 EISAA Executive Committee