Meet the Team

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

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

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 

​Amanda Moran, MPH

Program Evaluation Specialist

Merissa Kado, MPH

Program Evaluation Specialist


​Anah Esquerio, BS

​Intern Research Assistant