AIM Officers and Executive Committee Members

AIM Officers

Amber Tirmal (Philadelphia)

Tom McCleaf (PA)

Past Chair
Kathy Kudish (CT)

Molly Howell (ND)

Executive Committee Members

Terri Adams (MI) 
Ron Balajadia (HI) 
Heather Burris (DC)
Christy Gray (VA)
Sarah Leeds (ID)
Heather Roth (CO)
Stephanie Schauer (WI)
Rob Schecter (CA)
Monife Stout (USVI)
Pejman Talebian (MA)

AIM Staff

Claire Hannan

Claire Hannan, MPH

Executive Director

Claire Hannan joined the Association of Immunization Managers as its first Executive Director in 2004 and has spent her career working to support immunization policies and practices. She is responsible…

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Katelyn Wells

Katelyn Wells, Ph.D.

Chief Research and Development Officer

As the Chief Research and Development Officer, Katelyn develops and manages AIM's research and evaluation activities; oversees AIM’s top priorities and vision; and strategically works to increase AIM’s financial stability…

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Jennie Moss

Jennie Moss, CPA

Chief Financial Officer

As Chief Financial Officer, Jennie supervises AIM’s business operations, including human resources, operations, fiscal management, accounting, and contract and grant management.  She collaborates with AIM’s leaders to develop a solid…

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Brent Ewig, MSPH

Chief Policy and Government Relations Officer

As the Chief Policy and Government Relations Officer, Brent monitors the immunization policy landscape and develops resources to support AIM members engaging in effective policy development. He represents AIM in…

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Dr. Michelle Fiscus

Chief Medical Officer

As the Chief Medical Officer, Dr. Michelle Fiscus leads AIM’s CDC-funded project to improve COVID-19 vaccination rates in children under 5 years and helps inform AIM’s products, strategies, and policies.…

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Dr. Emily Messerli

Chief Programmatic Officer

As the Chief Programmatic Officer, Dr. Emily Messerli leads a dynamic team to implement the activities associated with the Centers for Disease Control and Prevention (CDC) cooperative agreements. She directs…

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Tessa Atkinson-Adams

Tessa Atkinson-Adams, MPA

Communications Director

As Communications Director, Tessa is responsible for developing and executing the organization's communications strategy. She manages all communications and ensures they are clear, unified, and compelling; provides oversight of the…

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Purnima Unni, MPH, CHES

Federal Grants Director

As the Federal Grants Director, Purnima Unni oversees the administration and management of activities associated with cooperative agreements awarded by the Centers for Disease Control and Prevention (CDC). Her key…

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Mackenzie Melton

Mackenzie Melton, MPH

Outreach and Education Manager

Mackenzie brings more than 20 years of public health, nonprofit, and vaccine advocacy experience to AIM. As Outreach and Education Manager, she designs and implements education and training on immunization…

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Kristy Westfall

Kristy Westfall

Data Project Manager

As Data Project Manager, Kristy supports members with immunization information systems (IIS) and data exchange. She worked with the Wyoming Department of Health Immunization Unit in various roles before joining…

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Diadra W. Biles, DPM, MPH, CPH

MAP Project Manager

As the MAP Project Manager, Dr. Biles works on implementing and evaluating the activities associated with the Member Assistance Program (MAP). Before joining AIM, she served as the Tobacco Program…

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Bertrand Kila

Bertrand Kila

Finance Manager

As Finance Manager, Bertrand is responsible for managing AIM’s finances which includes: generating financial reports, facilitating AIM’s annual audits, facilitating dues invoicing, payments, and reporting and coding income and expenditure.…

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Katie Drumhiller

Katie Drumhiller, MPH

Research and Evaluation Specialist

As Research and Evaluation Specialist, Katie leads AIM’s data collection and evaluation efforts and provides support for research grants and publications. Before joining AIM, she worked as a researcher and…

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Katy Gore, MPH, CHWI

Public Health Specialist

As a Public Health Specialist, Katy’s role is working on AIM’s CDC-funded project to improve COVID-19 vaccination rates in children under five years and helping inform AIM’s products, strategies, and…

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Angelika Hernandez, MA

Senior Communications Coordinator

As the Senior Communications Coordinator, Angelika contributes to AIM’s communications efforts, including the website, social media, and email communications. She has supported organizations such as Banner Health, the Phoenix Children’s…

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Ellie Austin

Ellie Austin

Senior Federal Grants Program Coordinator

As Senior Federal Grants Program Coordinator, Ellie works on the implementation of the activities associated with a cooperative agreement awarded by CDC—providing support for AIM awards, membership support, and leadership…

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Mikaela Pereira

Mikaela Mendoza Pereira, MPH

MAP Program Coordinator

As the MAP Program Coordinator, Mikaela assists with the administration and coordination of activities associated with the implementation and evaluation of the new Member Assistance Program (MAP). Before joining AIM,…

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Addi Vaz

REACH Program Coordinator
As REACH Program Assistant, Addi provides support related to AIM’s partnership with CDC’s Racial and Ethnic Approaches to Community Health (REACH) program.
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Helsa Guillaume

Federal Grants Program Coordinator

As the Federal Grants Program Coordinator, Helsa collaborates on the CDC-awarded cooperative agreement goals with the team. Her role involves facilitating the progress, application, and maintenance of measures to improve…

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Aleah Jensen

Aleah Jensen

Policy Analyst

As Policy Analyst, Aleah works closely with AIM’s executive director to organize and facilitate member activities and meetings, assist with media outreach and presentations and synthesize COVID-19 information for AIM…

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Katelyn McCullough

Public Health Associate

Katelyn McCullough is a 2021 CDC Public Health Associate assigned to AIM. As a Public Health Associate, she assesses the immunization environment, addresses public health needs and challenges, and facilitates…

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Rebecca Lawson

Public Health Associate

Rebecca Lawson is a 2022 CDC Public Health Associate working with AIM.  As a public health associate, she works to address public health needs and challenges in various ways. Becca…

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Jasmine Murray

Executive Assistant

As Executive Assistant, Jasmine works closely with AIM’s Executive Director by providing calendar management, meeting support, and project management. She also assists members, staff, and stakeholders. Jasmine has over 25…

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Julia Donavant

Research and Development Project Assistant
As Research and Development Project Assistant, Julia provides administrative support to several AIM programs and research and development grants.
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Cynthia Saballos

Finance Assistant

As the Finance Assistant, Cynthia supports AIM's finance team. Cynthia graduated from the University of Maryland with a Bachelor's in Media and Digital Communication and is pursuing a Master's in…

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Lori Linstead

Member Services Consultant

Lori is a private consultant who works with AIM to support immunization program managers in coordinating and operationalizing immunization information systems (IIS). She also assists AIM with various member services…

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Dan Hopfensperger

AIM Consultant

Dan Hopfensperger joined AIM as a consultant in the fall of 2015, primarily in the area of Immunization Information Systems.  Prior to joining AIM, Dan spent 36 years with the…

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Emily Less, MPH

Public Health Consultant

As a public health consultant for AIM, Emily focuses on vaccine confidence, immunization policy, and supporting research and development. Before joining AIM, she worked at Tacoma-Pierce County Health Department, where…

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Monica Mayer, MPH

Corporate Alliance Consultant

Monica manages the Corporate Alliance Program and has been with AIM since her retirement in 2018. She facilitates the Virtual Exhibit Hall webinars and coordinates the Exhibit Hall for the…

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AIM Legacy Council Members

Beth Rowe West (NC)

Brock Lamont (TX)

Christine Finley (VT)

Dan Hopfensperger (WI)

Jane Zucker (NYC)

Laurel Wood (AK)

Lori Linstead (OK)

Phil Griffin (KS)

Saroj Rai (TX)

Stacy Stevens Hall (LA)

Click here to read more about the AIM Legacy Council.

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