Our Team

Philip Yaeger | Executive Director & CEO

Philip Yaeger, who became executive director and CEO of AIDS Services Foundation Orange County in 2008, has a drive and passion for helping those living with HIV disease. Phil first joined Radiant Health Centers (then ASF) as a volunteer 24 years ago and immediately developed an appreciation for the stewardship of its resources and its strong commitment to the community.

Phil then became the organization’s first food pantry coordinator through a grant given by the Elizabeth Taylor Foundation, and later held a number of direct and support service roles—providing him with a 360-degree view of the scope and breadth of the organization’s critical work.

A highly respected authority on the subject of HIV and the importance of education, prevention, and the care of those infected with the disease, Phil is a dedicated and committed leader and an invaluable asset to the organization and the Orange County community.

Sandra Boodman, LCSW | Chief Programs Officer

Sandra Boodman, who became Senior Director of Programs in April of 2017 is very passionate about helping underserved communities and has worked in mental health non-profit management since 2008.  Sandra joined RHC in 2014 as a Case Management Supervisor and then as the Director of Clinical and Case Management Services where she oversaw the nursing and social service case managers, as well as interns and case management support staff, and provided intensive services to clients in both fields and clinic-based settings.

Sandra has also served as a case management supervisor for community programs to provide services to high-risk youth in truancy or juvenile drug court with mental health diagnoses; a program manager for a residential youth program that provides services for youth ages 18-21 with persistent mental illness; and as a social worker. She graduated with a bachelor’s degree in women’s studies from the University of California, Los Angeles, and obtained a master’s degree in social work with a focus on children, youth and families from California State University, Long Beach. She has been a licensed clinical social work since 2013.

Employees & Departments

Radiant Health Centers staff are highly committed, professional and caring individuals who have served the agency for a number of years.  Many staff members are bilingual and speak fluent Spanish.


Michael Brewer
Senior Administrative Assistant
949.809.5706 or mbrewer@radianthealthcenters.org

Lisa Osborn
Human Resources Generalist
949.809.5724 or losborn@radianthealthcenters.org


Gabriela Alvarado-Zavala, MSW
Director of Clinical and Case Management Services
949.809.5730 or gazavala@radianthealthcenters.org

Medical Case Management

Wendy Lords, MSW, PhD
Lead Social Work Case Manager
949.809.5732 or wlords@radianthealthcenters.org

Martha Gomez
Social Work Case Manager
949.809.5716 or mgomez@radianthealthcenters.org

Ben Quan
Social Work Case Manager
949.809.5776 or bquan@radianthealthcenters.org

Marie Misity
Lead Nurse Case Manager
949.809.5797 or mmisity@radianthealthcenters.org

Lupe Uribe
Nurse Case Manager
949.809.5728 or luribe@radianthealthcenters.org

Sharon Petrillo
Nurse Case Manager
949.809.5744 or spetrillo@radianthealthcenters.org

Barbara Campos
Nurse Case Manager
949.809.5733 or bcampos@radianthealthcenters.org

Non-Medical Case Management

Amanda Peraza
Social Services Case Manager Supervisor
949.809.8767 or aperaza@radianthealthcenters.org

Brigett Tran
Linkage to Care Case Manager Rapid ART Liaison 
949.809.5774 or bgusman@radianthealthcenters.org

Pau Lagarde

Social Services Case Manager 
949.809.5000 or plagarde@radianthealthcenters.org

Stephanie Munoz

Service Coordinator  
949.809.5000 or smunoz@radianthealthcenters.org

Josie Lopez
Linkage to Care 
949.809.5774 or jlopez@radianthealthcenters.org


Susan Caumiant
Chief Development Officer
949.809.8760 or scaumiant@radianthealthcenters.org

Ana Martinez
Director Donor Relations
949.809.5768 or amartinez@radianthealthcenters.org

Rodrigo Reyes
Development/Event Administrator 
949.809.8761 or rreyes@radianthealthcenters.org


Kathleen Nguyen
Family Programs Coordinator/Case Management Assistant 
949.809.5710 or knguyen@radianthealthcenters.org


Noel Heredia
Chief Technology Officer
818.292.9990 or nheredia@radianthealthcenters.org


Daniel Seargeant
Chief Financial Officer

Try Nghia
Staff Accountant
949.809.5759 or tnghia@radianthealthcenters.org

Nathaniel Nocum
Finance Manager
949.809.5762 or nnocum@radianthealthcenters.org


Brandi Tatman
340B Project Manager
949.809.5723 or btatman@radianthealthcenters.org

Iris Garcia
340B Eligibility Coordinator
949.809.5764 or igarcia@radianthealthcenters.org

Alana Porat 
340B Outreach Coordinator
949.809.5772 or aporat@radianthealthcenters.org


HIV Testing & Prevention

CDC Project (RADAR)

Mario Casas
Project Manager
714.868.5602 or jsaucedo@radianthealthcenters.org

Manny Muro
Prevention Navigator
714.868.5606 or mmuro@radianthealthcenters.org

Alejandro Mena
HIV Counseling & Testing Specialist
714-868-5605 or amena@radianthealthcenters.org

Jorge Vieto 
Linkage to Care Case Manager
714.868.5603 or jvieto@radianthealthcenters.org


George Smith
Director of Housing & Benefits
949.809.5784 or gsmith@radianthealthcenters.org

Rosa Tavarez
Housing Case Manager
949.809.5781 or rtavarez@radianthealthcenters.org

Jonathan Brewer
Housing Plus Project Case Manager
949.809.5782 or jbrewer@radianthealthcenters.org

Rob Natsuhara
Benefits Counselor
949.809.5715 or rnatsuhara@radianthealthcenters.org

David Velazguez
Eligibility Screener
949.809.5736 or dvelazguez@radianthealthcenters.org


Sandra Boodman, LCSW
Senior Director of Chief Programs Officer


Food Pantry

Olivia Hazell
Registered Dietitian
949.809.5745 or obassett@radianthealthcenters.org

Brent Wellman
Food Pantry Coordinator
949.809.8769 or bwellman@radianthealthcenters.org

Volunteer Services

Tammy Nguyen
Lead – Support Services 
949.809.5771 or tnguyen@radianthealthcenters.org


Edward Zavala
Transportation Supervisor
949.809.5776 or ezavala@radianthealthcenters.org


Dr. Bonnie Bock
949.809.8764 or Bbock@radianthealthcenters.org

Dave Usman
Nurse Practitioner
949.809.8764 or Dusman@radianthealthcenters.org

Jay Kim
Nurse Practitioner
949.809.8764 or Jkim@radianthealthcenters.org

Gabe Durnian
Medical Assistant
949.809.8764 or Gdurnian@radianthealthcenters.org

Hernan Santillana
PrEP Navigator
949.809.8764 or Hsantillana@radianthealthcenters.org

Josie Lopez
Linkage to Care Case Manager
949.809.8764 or Jlopez@radianthealtcenters.org

Ida Duron
Clinic Manager
949.809.8764 or Iduron@radianthealthcenters.org

Jonathan Ramirez
Clinic Support Services Supervisor
949.809.8764 or Jramirez@radianthealthcenters.org


Armida Acosta, Psy.D.
Director of Mental Health
949.809.5798 or aacosta@radianthealthcenters.org

Alexandra Concepcion, Psy.D.
Mental Health Counselor
949.809.5763 or aconcepcion@radianthealthcenters.org