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Executive Team

Sandra J. Valenciano, M.D., M.P.H.

Office of the Director
District Health Director and Chief Executive Officer
Dr. Sandra Valenciano serves as the District Health Director and Chief Executive Officer for the DeKalb Health District, District 3-5. She oversees public health services for the over 760,000 residents of the county, where more than 130 languages are spoken. She is also an Adjunct Assistant Professor in the Department of Family and Preventive Medicine at the Emory University School of Medicine.

Dianne McWethy, M.P.A., C.P.M

Division of Administration
Division Director
Dianne McWethy serves as the Division Director of Administration. Ms. McWethy is responsible for the following administrative departments and functional areas: Finance, Internal Services (which includes Purchasing and Contracts and Facilities), Information Technology, Vital Records, Grants Management, and Warehouse and Records Management.  As a public administrator, Ms. McWethy has over 30 years of experience in government, with an emphasis in city and county government. She also has experience in elections and library services administration and management. 

Linda O'Sullivan, D.N.P., M.S.N., R.N.

Division of Clinical Services
Division Director
Dr. Linda O’Sullivan serves as the Division Director of Clinical Services, overseeing clinical and nursing services at four health centers, as well as in the Ryan White Early Care Clinic and TB/Refugee Services. Dr. O’Sullivan has served the community in several capacities for 20 years and joined the DeKalb County Board of Health in January 2022.

Stefani Carter

Stefani Carter, M.A., C.P.M.

Division of Community Health
Division Director
Stefani Carter serves as the Division Director of Community Health, which includes oversight of the Health Assessment and Promotion department, Oral Health program, and Maternal and Child Health programs. Since 2002, Ms. Carter has served in various capacities at the DeKalb County Board of Health.

Ryan Cira, M.P.H.

Division of Environmental Health
Division Director
Ryan Cira serves as the health district's Environmental Health Director, managing services that include food protection, swimming pool safety, onsite sewage management systems, tourist accommodations, vector control, and lead poisoning prevention. Mr. Cira has served the community and the DeKalb County Board of Health for over 30 years.

Eric Nickens, Jr., M.A.

Office of Communications and Media Relations
Communications and Media Relations Manager
Georgia DPH District 3-5 Public Information Officer
Eric Nickens, Jr., joined the DeKalb County Board of Health in January 2017 and serves as the health district’s Public Information Officer (PIO). With over 15 years of media relations experience, Mr. Nickens leads all communications for the agency, including graphics and multimedia production, social media, and website management.

Position Vacant

Office of Emergency Preparedness
Emergency Preparedness Manager

Calvin Patimeteeporn, M.S.P.H.

Office of Epidemiology
District Epidemiologist
Calvin Patimeteeporn serves as the District Epidemiologist, leading the surveillance of diseases and other health conditions that affect DeKalb residents. He also is responsible for all reports of notifiable diseases and outbreaks.

Kelvin Foye, M.S.

Office of Human Resources
Human Resources Director
Kelvin Foye serves as the Director of Human Resources with over 20 years of responsibility and progressive experience in Human Resources management. Mr. Foye's experience includes working in both the local government and manufacturing environments, with a focus on employee relations, employee engagement, performance management, training and recruitment. He is dedicated to fostering an inclusive work environment that promotes increasing employee morale, boosting organizational performance, and attracting and retaining top talent.

Cinthya Zermeno, B.S.

Office of Quality Improvement and Strategy
Quality Improvement and Strategy Manager
Cinthya Zermeno has served as the Quality Improvement & Strategy Manager since July 2023. She is responsible for managing the agency's quality initiatives, projects, and metrics to improve the operational performance. Ms. Zermeno has been working on a cross-functional team using the Lean Six Sigma methodology for the past 14 years to create value, quality work, and customer satisfaction. She has ISO 9001:2015 certification as an internal auditor.