Board of Directors
Our Board of Directors represent our community population. They guide much of our decision-making, and therefore is comprised of a mix of patients and residents from UHC-Served communities who reflect local demographics.

Jack Shantz, Psy. D.
Board Chair

Sarah Guerra
Vice Chair

Daniel Parra
Parliamentarian

Nathan Williams
Treasurer

Ofelia Garcia
Secretary

Esther Nicacio
Board Member

Lorane Avalos
Board Member

Angel Angulo
Board Member

Jose Gutierrez
Board Member

Nicole Thompson
Board Member
Executive Leadership Team

Colleen Curtis
President & Chief Executive Officer

Justin Preas
Deputy Chief Executive Officer

Ganga Hematillake, M.D.
Chief Medical Officer

David Phillips
Community Development Officer

Beatrice Perez
Clinical Services Officer

Miguel Rodriguez
Chief Operations Officer

Ricardo Viveros
Business Development Officer

Jesus Maldonado
Chief Financial Officer
Raul Venegas
Chief Information Officer
Senior Leadership Team

Gregory Williams, M.D.
Associate Medical Director

Sonia Relingo, D.D.S.
Associate Dental Director

Nathan Boyd, D.D.S.
Associate Dental Director

Stephanie Phyo, O.D.
Director of Optometry

Sylvia Ramirez, Psy.D.
Director of Behavioral Health

Eliane Saed, R.N.
Director of Clinical Services

Alyssa Tapia-Ramirez
Director of Dental Operations

Hyman Tageldin
Director of Information Technology

Jonathon Anderson
Director of Health Information Technology

Michael Green
Director of Human Resources

Sara Santillan
Director of Quality Improvement

Mary Lou Lopez
Director of Central Operations

Blake Carpenter
Director of Operations

Navjot Singh
Director of Billing and Managed Care

Choua Xiong-Fajardo
Director of Finance

George Chatyrka
Director of HRSA Compliance/Grant Management

Kevin Love
Director of Facilities