Board of Directors
The Board of Directors represents 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

Ofelia Garcia
Secretary

Nathan Williams
Treasurer

Daniel Parra
Parliamentarian

Angel Angulo
Board Member

Lorane Avalos
Board Member

Jose Gutierrez
Board Member

Esther Nicacio
Board Member

Nicole Thompson
Board Member

Irma Cruz
Board Member
Maricela Vargas
Board Member
Executive Leadership Team

Colleen Curtis
President & Chief Executive Officer

Justin Preas
Deputy Chief Executive Officer

Gregory Williams, M.D.
Chief Medical Officer

Ganga Hematillake, M.D.
Chief Medical Officer - United Physicians Network

Beatrice Perez, RN
Chief Clinical Services Officer

Anthony Olivares
Chief Operations Officer

Jesus Maldonado
Chief Financial Officer

David Phillips
Community Resource Officer

Ricardo Viveros
Business Development Officer

Miguel Rodriguez
Chief Administrative Officer
Senior Leadership Team

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

Steven Magallanes, D.C.
Chiropractic Director

Eliane Saed, RN
Director of Clinical Operations

Alyssa Tapia-Ramirez
Director of Dental Operations

Gail Espinosa Mora
Director of Optometry Operations

Kenneth Evans
Director of Operations

Casie Cart
Director of Operations

Joshua Skunca
Director of Operations

Emily Mireles
Director of Referrals

Michael Green
Director of Human Resources

Stuart Bispham
Director of Data and Analytics

Jonathon Anderson
Director of Health Information Technology

Choua Xiong-Fajardo
Director of Finance

Kevin Love
Director of Facilities

Bobby Burgess
Director of Construction

Mary Lou Lopez
Director of Billing

Navjot Singh
Director of Managed Care and Contracting

George Chatyrka
Director of HRSA Compliance/Grant Management

Sara Santillan
Director of Quality Improvement

Stacee Reed
Provider Recruiter

Jose Ramos
Director of Recruitment & Development