Staff + Governance

Executive Team

photo of Fred Rachman, MD Chief Executive Officer | AllianceChicago
Fred D. Rachman, MD
Chief Executive Officer
photo of Andrew Hamilton, RN, BSN, MS | AllianceChicago
Andrew Hamilton, RN, BSN, MS
Chief Informatics Officer
image of Margaret Castrovillari, CPA | AllianceChicago

Margaret S. Castrovillari, CPA, MBA
Chief Financial Officer

image of Nivedita Mohanty, MD | AllianceChicago
Nivedita Mohanty, MD
Chief Research Officer and Director of Evidence Based Practice

Warria Esmond, MD
Chief Clinical Officer

Elizabeth (Liz) Adetoro, MPH
Research Manager

Tina Aggarwal, MS, BSN, RN
Clinical Informaticist

Austin Bohr
IT Business Systems Analyst

Jaimie Bubb, RN, BSN, MS
HIT Operations Manager
Jeremy Carr
Director of Applications

Jessica T. Claudio, MBA
Assistant Director of Research

Chris Cole
Systems Analyst

Abbey Ekong, MA
Research Coordinator

Maricela Espinoza,

Health Information Technology Analyst

Azalia Garcia
Community Health Worker/Health Coach

Titanila (Titi) Halajova, JD
Finance/HR Legal Clerk

Dana M. Harrison
Grants Accounting Manager

Amro Hassan
Solutions Architect

Jordan Hatcher, MPH
ICAN Program Director

Claudria S. Hurt, MSHRMD
HR/Business Operations Manager
Karen Iversen, MPH, PCMH CCE
Practice Transformation Coach

Ryan Jaeger
Senior SQL Data Analyst and Data Warehouse Product Manager

Arjit Jain, MSMIS
Data Analyst

Christina Kim, MPH, PCMH CCE
Practice Transformation Coach

Ewa Kwasnik
Facilities Assistant

Jenya Lazarova
Executive Assistant

Courtney Leonard, MPH, MHA
HIT Coordinator

David Liss, PhD
Health Services Research Scientist

Todd Locey
Application Analyst II

Lisa Masinter, MD, MPH, MS
Director of Research

Sean McCook, MBA, RN-BC
HIT Implementation Manager

Elizabeth McKnight, MMI
Health Informatics Specialist
Ekem Merchant-Bleiberg
Senior Director of HIT Operations

Erick Michalski
Director of IT Infrastructure

Jennifer Morrison, APRN, MPH
Clinical Research Scientist

Jin Nam, RN, MS
Director of Practice Transformation

Rashmi Narayan, MD, FAAP
Clinical Research Scientist

Vonda Norman
Administrative Coordinator
Roxane Padilla, MPH
Research Manager

Nicole Padula, MPH
Informatics Project Manager

Jeff Panzer, MD, MS
Physician Innovator

Shannon Pohl, MS, BSN, RN
Director of Informatics

Rhein Punzalan
Software Engineer

Ulises Reyes
Data Engineer

Quenton Richardson
Technical Support Specialist

Sam Ross
HIT Policy Analyst

Annette Rueda
Community Health Worker/Health Coach

Maria Ruiz
Community Health Worker/Health Coach

Carlos Salgado
HIT Implementation Specialist
Star A. Sandifer
Director of Finance

Eduardo “JR” Segovia
Manager, Data Warehouse Business Analyst

Rebecca S. Silverman, MPH
Quality Improvement Advisor

Jodi Simon, DrPH, MS
Health Services Research Scientist

Shelly Sital, MPH
Director of Public Health Initiatives

Matthew Sterling
Senior Director of Information Technology

Tangina Sultana
Cyber Security Analyst

Natalie Swiencki, MNA
Corporate Communications & CRM Manager
Azin Tanni, RN, MSN, INS
Clinical Systems Analyst

Kai Tao, ND, APN, MPH
Principal, Impact and Innovation for Illinois Contraceptive Access Now (ICAN)

Kushal Tatampudi, MSHI
Data Analyst

Katie Thiede
Executive Director, Illinois Contraceptive Access Now

Angela Tobin
Project Manager, Practice Transformation

Carmela Tyler, MBA
Senior Accountant

Connie Tzeng
Grants Manager

Anna Liza Ulangca
Accounting Clerk

Sr. Angela Umenze, MBA
Grants Accountant

Jena Wallander, MPH, BSN, RN
Clinical Research Manager

Katy Walsh, MA
Director of Grants Management and Development

Rebecca Wiedmeyer
Director Health Information Technology Solutions

Andrea Wilson, MS
Innovation Strategist

Ta-Yun Yang, MS
Research Data Scientist

Amy Yarrington, MA
HIT Coordinator

Thomas Young, EMBA
Application Analyst II

Linda Zayed, MPH
Community Health Worker/Health Coach

AllianceChicago Governance


AllianceChicago operates under the ownership and guidance of our four non-profit 501 (c) (3) founding members, and is governed by a Board of Managers that includes the Chief Executive Officers of each of the founding member Centers, as well as the AllianceChicago Chief Executive Officer and the Near North Health Service Corporation Director of Finance and Accounting.


AllianceChicago Board of Managers


Berneice Mills-Thomas, RN, MSM, MPH, MBA, Chair
Chief Executive Officer,
Near North Health

Ed Stellon, MS, MA, CADC, Vice-Chair
Vice President and Executive Director,
Heartland Alliance Health

Lee Francis, MD, MPH, Treasurer
President and Chief Executive Officer,
Erie Family Health Centers

David Munar, Secretary
President and Chief Executive Officer,
Howard Brown Health


Ex-Officio Members


Mary Kay Gilbert, MBA
Chief Growth Officer,
Heartland Alliance Health

Nicole Kazee, PhD
Vice President of Strategy and Business Development,
Erie Family Health Centers

Lauren Sullivan
Chief Information Officer,
Howard Brown Health

Fred D. Rachman, MD
Chief Executive Officer,

Stephanie Cox-Batson, MD
Chief Medical Officer,
Near North Health