San Benito County

Health & Human Services Agency

Hollister, California

Director and Executive Staff


It is the Mission of San Benito County Health & Human Services Agency to promote personal responsibility, independence and self-sufficiency of individuals and families through a responsive and accessible system that acknowledges the dignity of all individuals we serve and will provide them services with respect and compassion.

Additionally, this agency may not discriminate against you on the basis of your actual or perceived age, ancestry, race, color, national origin, ethnic group identification, genetic information, gender, gender identity, or gender expression, religion, marital status, sexual orientation, political affiliation, or physical or mental disability. (Not all prohibited bases apply to all programs.)

If you feel that you have been discriminated against, contact the county representative listed as the Civil Rights Coordinator below.  If your problem is still not resolved, you can contact the California Department of Social Services.




Open minded, problem solving, consideration, listening without judgement, attentiveness, responsiveness compassion.


Flexibility, patience, encouragement, hop, perseverance, positive outlook, humor.


Dignity, fairness, courtesy, kindness, compassion, integrity, loyalty, trust, honor ones diversity, equality, appreciation, self- respect.


Dependable, integrity, trust, conscientious, commitment, teamwork.

Director and Executive Staff

our promise

  • To strive for excellence in meeting the changing needs of our community.
  • To provide effective community collaboration for services that support, assist, educate, and protect individuals, families, and children.
  • To continue to pursue professional growth and development which will best serve the people of San Benito County.
  • To continue our commitment to treat all people with respect, dignity, and courtesy.

Executive Staff




Tracey Belton brings 23 years of Health and Human Services experience to the organization. In building her public service career, Ms. Belton has worked in several areas of discipline, including Public Assistance Administration, Child Welfare Services and Adult Protective Services. Ms. Belton has a strong devotion to helping members of the community, and has a sincere passion to serve the young and old. Ms. Belton is also actively involved with additional County Committees, Boards and Professional Teams. She actively participates on the San Benito County Homeless Committee, the School Attendance Review Board (SARB), the Domestic Violence Committee, the Sexual Assault Review Team (SART), the Community Corrections Partnership (CCP), and is also a Forensic Interviewer for the Child Abuse Response Team (CART). Ms. Belton also strives to build upon her professional and career development by participating in continuing management and leadership courses. Ms. Belton is committed to advancing the community’s knowledge and understanding of the available public assistance programs, as well as the impacts of poverty on children and families.



Mr. Rubalcava holds a bachelor's degree in business administration with a focus on organizational leadership, as well as a master's degree in leadership and organizational studies from Fresno Pacific University. A distinguished veteran, Mr. Rubalcava's service in the Marine Corps is commendable. Beyond his military accomplishments, he plays an active role in his community by serving on the Le Grand High School Board of Trustees assuming the position of President of the local Tri-City Bulldogs Youth Football and Cheer Program. Utilizing his bilingual and biliterate skills to their fullest potential, he effectively assists the residents of San Benito County.




Mr. Mercier has administrative oversight of the following divisions within the San Benito County Health and Human Services Agency: Child Protective Services, Adult Protective Services, Resource Family Approval, In-Home Support Services, and Public Authority. Mr. Mercier accepted employment with the San Benito County Health and Human Services Agency-Child Protective Services Division in June 2008. He has served the as an Emergency Response CPS Social Worker and Court CPS Social Worker from 2008-2013. He then transitioned into the role of CPS Supervisor overseeing the Emergency Response and Court Units. Mr. Mercier then accepted a position with the San Benito County Healthcare District overseeing social services for Hazel Hawkins Memorial Hospital, Community Health Clinics, and San Benito Home Health Care from 2016-2020. In February of 2020, he accepted the role of Deputy Director of Children and Adult Services for the County of San Benito. Joshua Mercier attended California State University, Chico and completed his undergraduate education receiving a Bachelor of Arts in Psychology in 2006. He continued his education and received his master’s degree in social work from CSU-Chico in 2008.




Enrique Arreola has been with the agency for over 15 years as the Deputy Director of Community Services & Workforce Development (CSWD) and is responsible for the administration and operations of the division. He manages the Community Action Agency, homeless and housing programs, the America's Job Center of California (AJCC) and the San Benito County Migrant Center. Mr. Arreola has over 30 years’ experience managing social service programs to low-income families, children and youth, seniors and has extensive experience for the oversight, leadership, contract compliance, fiscal and administration. With a passion for the underprivileged, he has dedicated his professional career to helping the most vulnerable members of our community. Mr. Arreola was born in Mexico, raised in Hollister by a migrant family of 9 children and worked in the fields until the age of 20. His greatest pride is his three lovely children. He is bilingual/biliterate in English and Spanish.




Nicholas "Nic" Calvin is responsible for overseeing all public and environmental health programs.
Nic brings a unique perspective to San Benito County, having grown up in rural Alabama. He obtained a Bachelor's degree in Biblical Studies and further pursued his education by earning a Master of Public Health degree from the University of Alabama in Birmingham, as well as a Juris Doctor from Cumberland School of Law. During his time in school, Nic worked at the Centers for Disease Control and Prevention and volunteered at multiple homeless shelters in downtown Birmingham, where he provided public health education classes and job guidance. As Deputy Director of Public Health, Nic brings valuable experience in managing health departments and healthcare agencies. Prior to his current role, he managed an independent pharmacy in rural Alabama before relocating to the west to pursue a career in public health. In eastern Oregon, he served as the director of a health department and rural health clinic. Currently, Nic is an active member of the Central California Public Health Consortium, participating in their Leadership, Policy, and Healthcare Sustainability subcommittees. Additionally, he represents San Benito as the County Health Executives Association of California representative. Nic is dedicated to expanding the reach of public health within San Benito County.




Dr. Scott focuses on strengthening programs, managing communicable and environmental threats, and utilizing science, social determinants, and community initiative to guide San Benito County towards achieving optimal health for all. Dr. Scott has an impressive background in public health. She joined the CDC's Epidemic Intelligence Service and the US Public Health Service Commissioned Corps (USPHS) in the early 90s. Throughout her twenty-year tenure as a USPHS Medical Officer, she worked in different programs at CDC headquarters, state health departments, and took on international assignments. From 2000-2005 Dr. Scott was seconded to the US Department of State as inaugural CDC Director in the United Republic of Tanzania and Zanzibar. During her career, Dr. Scott has shaped maternal and child health policies, played a role in establishing a global infrastructure for HIV/AIDS prevention, treatment, and care, and provided leadership in managing multidrug-resistant tuberculosis, communicable diseases, and disaster management in multiple settings. She retired from the USPHS in 2010 at the rank of CAPT. Before her current position, Dr. Scott worked as a Medical Consultant at the South Carolina Department of Health and Environmental Control for five years. In this role, she focused on areas such as Community Health Services, Maternal and Child Health, and HIV/AIDS. Dr. Scott grew up in Oakland, CA, and graduated from the University of California at Santa Cruz. She further pursued graduate studies at Boston University School of Medicine and Johns Hopkins University School of Hygiene and Public Health. Additionally, she completed clinical residencies in Internal Medicine and Preventive Medicine. Dr. Scott continues to provide guidance and support to initiatives that align with her passions for education, history, health equity, and human rights.




Ms. DaRoza, who had previously worked at San Benito County for several years, returned three years ago to contribute her expertise to the Fiscal Division of the Health and Human Services Agency as interim deputy director. Being a long-time resident of Hollister, she has actively participated in the community by serving on various boards such as the San Benito County Chamber of Commerce, United Way of San Benito County, Red Cross, Pinnacle Quilters of San Benito County, and various community committees. Her unwavering dedication is focused on the numerous programs administered by the Health and Human Services Agency, all with the goal of improving the lives of the county's residents.




In her role, Ms. Shaw is responsible for managing the Staff Services department within the Health and Human Services Agency. She earned her bachelor’s degree in business administration from California State University Monterey Bay and went on to complete her master’s degree at Azusa Pacific University with a concentration in Human Resource Management.

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