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Center Staff

Erik Groessl, PhD 

Executive Director

Andrew Sarkin, PhD

Director of Evaluation Research

Steve Tally, PhD

Senior Project Manager

​​Alfredo (Freddy) Arriola, BA

Field Researcher


​​Trinell Brashear

Programmer / Analyst


Danielle Casteel, MA

Program Evaluation Specialist


​Kim Center, MA

Program Evaluation Specialist


Kyle Choi, MPH

Informatics Project Coordinator

​Helen Chong, MPH

Field Researcher


​Donald Clermont, MPH

Field Researcher

Maria Dyer, BA

Administrative Assistant

​​Marlin Hart

Survey Research Assistant

Richard Heller, MA

Community Health Program Representative

Rahil Hernandez, BS

Research Associate 


Naomi Hillery, MPH 

Project Manager


​Lena Hofmann, MA

Field Researcher


​Louielyn Lirio, MPH

Program Evaluation Specialist

Symone McKinnon, MA

Program Evaluation Specialist

Mark Metzger, BS

Programmer / Analyst

Gina Misch, MA, MPA

Project Manager

Calvin Navarro, MS

Programmer/ Analyst

Amy Panczakiewicz, MA

Program Evaluation Specialist

Jorge Perez, BA

Programmer / Analyst

Alexandra Resari, MA 

Program Evaluation Specialist

Frances Reyes Yee, MA

Program Evaluation Associate / Project Manager

Andow Rodriguez

System Administrator


Katie Rule, MPH, MSW

Program Evaluation Specialist


Fatema Sakha, BS

Survey Worker​


​​​Nisha Sanghvi, MPH

Program Evaluation Specialist


Vivianne Silva, BS

Survey Research Assistant


​Me Young Song, BS

Survey Research Assistant


​Edith Wilson, PhD

Evaluation Research Associate



Zhun Xu, PhD

Programmer / Analyst 

Program Evaluation Specialist

​Merissa Kado, MPH

Program Evaluation Specialist

Anah Esquerio, BS

​Intern Research Assistant