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
image of Timothy Long, MD | AllianceChicago
Timothy Long, MD
Chief Clinical Officer
Elizabeth (Liz) Adetoro, MPH
Research Manager

Tina Aggarwal, MS, BSN, RN
Clinical Informaticist

Alex Alstork
Application Analyst II

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

Andrea Chavarria
Community Health Worker/Health Coach

Jessica T. Claudio, MBA
Assistant Director of Research

Chris Cole
Systems Analyst

Maricela Espinoza,

Health Information Technology Analyst

Azalia Garcia
Community Health Worker/Health Coach

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

Amro Hassan
Solutions Architect
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

Ewa Kwasnik
Facilities Assistant

Christina Kim, MPH, PCMH CCE
Practice Optimization Coach

Jenya Lazarova
Executive Assistant

Courtney Leonard, MPH, MHA
HIT Coordinator

Todd Locey
Application Analyst II

Lisa Masinter, MD, MPH, MS
Director of Research

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

Erick Michalski
Director of IT Infrastructure

Jin Nam, RN, MS
Director of Practice Transformation
Vonda Norman
Administrative Coordinator
Roxane Padilla, MPH
Research Manager

Nicole Padula, MPH
Informatics Project Manager

Jeff Panzer, MD, MS
Director of Innovation


Shannon Pohl, MS, BSN, RN
Director of Informatics

Rhein Punzalan
Software Engineer

Ulises Reyes
Data Engineer

Quenton Richardson
Technical Support Specialist

Maria Ruiz
Community Health Worker/Health Coach

Carlos Salgado
HIT Implementation Specialist
Star A. Sandifer
Accounting Manager

Ragini Sarma Baxi, MHA
Director of Strategic Operations

Bridget Schafer
HIT Practice Coordinator

Eduardo “JR” Segovia
Manager, Data Warehouse Business Analyst

Jodi Simon, DrPH, MS
Research Scientist

Matthew Sterling
Senior Director of Information Technology
Natalie Swiencki, MNA
Corporate Communications & CRM Manager
Azin Tanni, RN, MSN, INS
Clinical Systems Analyst

Kai Tao, ND, APN, MPH
Director, Juno4Me (Founder)

Katie Thiede
Executive Director, Illinois Contraceptive Access Now

Angela Tobin
Project Manager, Practice Transformation

Angela Townsend
Youth Program Manager, Juno4Me

Carmela Tyler, MBA
Senior Accountant

Connie Tzeng
Grants Administrator

Anna Liza Ulangca
Accounting Clerk

Sr. Angela Umenze, MBA
Grants Accountant

Jena Wallander, MPH, BSN, RN
Research Coordinator

Katy Walsh, MA
Director of Grants Management and Development

Andrea Wilson, MS
Innovation Strategist

Ta-Yun Yang, MS
Research Data Scientist

Amy Yarrington, MA
HIT Coordinator

Jason York
Director of Service Management

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 Service Corporation

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

Kristin Keglovitz Baker, PA-C, AAHIVS
Chief Operating Officer and Certified Physican Assistant,
Howard Brown Health

Fred D. Rachman, MD
Chief Executive Officer,

Cush Mvududu, CPA, CA
Director of Finance and Accounting,
Near North Health Service Corporation