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HHS Divisions

The U.S. Department of Health and Human Services (HHS) is made up of a family of divisions that work together to protect health and support people across the country. Some divisions carry out their work with a high level of independence, while others are part of the Office of the Secretary and focus on policy, management, and support. Together, they deliver programs, conduct research, ensure safety, and provide services that improve the health and well-being of all Americans.

Immediate Office of the Secretary (IOS)

IOS oversees the Secretary's operations and coordinates the Secretary's work.

Visit IOS for more info

Office of Intergovernmental and External Affairs (IEA)

IEA represents both the government and external perspective in federal policymaking and clarifies the federal perspective to government officials and external parties.

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Office of the Secretary

Assistant Secretary for Administration (ASA)

ASA provides leadership for HHS departmental management, including human resource policy and departmental operations.

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Assistant Secretary for Financial Resources (ASFR)

ASFR provides advice and guidance to the Secretary on budget, financial management, acquisition policy and support, grants management, and small business programs. It also directs and coordinates these activities throughout the Department.

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Assistant Secretary for Health (ASH)

ASH advises on the nation's public health and oversees HHS' U.S. Public Service (PHS) for the Secretary.

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Assistant Secretary for Legislation (ASL)

ASL provides advice on legislation and facilitates communication between the Department and Congress.

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Assistant Secretary for Planning and Evaluation (ASPE)

ASPE advises on policy development and contributes to policy coordination, legislation development, strategic planning, policy research, evaluation, and economic analysis.

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Assistant Secretary for Public Affairs (ASPA)

ASPA provides centralized leadership and guidance on public affairs for HHS' staff, operating divisions, and regional offices. APSA also administers the Freedom of Information and Privacy Act.

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Departmental Appeals Board (DAB)

DAB provides impartial review of disputed legal decisions involving HHS.

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Office of the Chief Information Officer (OCIO)

OCIO is the collaborative hub of a unified One HHS technology enterprise. The offices of Information Security (OIS), IT Operations (OPS), HR IT Consolidation (HRIT), the Chief Data Officer, and Chief AI Officer operate as a connected network delivering technology that is secure, accessible, and innovative across HHS.

Visit OCIO for more info

Office for Civil Rights (OCR)

OCR ensures that individuals receiving services from HHS-conducted or -funded programs are not subject to unlawful discrimination, that individuals and entities can exercise their conscience rights and religious freedom, and that individuals can access and trust the privacy and security of their health information.

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Office of the General Counsel (OGC)

OGC provides quality representation and legal advice on a wide range of highly visible national issues.

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Office of Global Affairs (OGA)

OGA provides leadership and expertise in global health diplomacy to contribute to a safer, healthier world.

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Office of Inspector General (OIG)

OIG protects the integrity of HHS programs as well as the health and welfare of the program participants.

Visit OIG website

Office of Medicare Hearings and Appeals (OMHA)

OMHA administers nationwide hearings for the Medicare program.

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Office of the National Coordinator for Health Information Technology (ONC)

ONC is committed to ensuring that HHS’ data and technology programs, policies, and investments are well coordinated and aligned to advance HHS’ mission.

Visit ONC for more info

For ACF, ACL, and SAMHSA press inquiries, reporters writing for a media outlet may contact the HHS Office of the Assistant Secretary for Public Affairs.

For HRSA press inquiries, reporters writing for a media outlet may submit a request for comment.

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Administration for Children & Families (ACF)

ACF promotes the economic and social well-being of families, children, individuals and communities through funding, partnerships, guidance, and training.

Visit ACF website
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Administration for Community Living (ACL)

ACL increases access to community support and resources for the unique needs of older Americans and people with disabilities.

Visit ACL for more info
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Advanced Research Projects Agency for Health (ARPA-H)

ARPA-H accelerates better health outcomes for everyone by supporting the development of high-impact solutions to society's most challenging health problems.

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Administration for Strategic Preparedness and Response (ASPR)

ASPR leads the nation's medical and public health preparedness for, response to, and recovery from disasters and public health emergencies.

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Agency for Healthcare Research and Quality (AHRQ)

AHRQ advances excellence in healthcare by producing evidence to make healthcare safer, higher quality, more accessible, equitable, and affordable.

Visit AHRQ for more info
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Agency for Toxic Substances and Disease Registry (ATSDR)

ATSDR protects communities from harmful health effects related to exposure to natural and man-made hazardous substances.

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Centers for Disease Control and Prevention (CDC)

CDC is the nation's leading science-based, data-driven, service organization that protects the public's health.

Visit CDC for more info
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Centers for Medicare & Medicaid Services (CMS)

CMS provides health coverage through Medicare, Medicaid, the Children's Health Insurance Program, and the Health Insurance Marketplace.

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Food and Drug Administration (FDA)

FDA ensure the foods you eat, the medicines you take, and the products you use are safe and effective.

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Health Resources and Services Administration (HRSA)*

HRSA programs expand access to care for underserved communities and support providers across the country.

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Indian Health Service (IHS)

IHS is responsible for providing federal health services to American Indians and Alaska Natives.

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National Institutes of Health (NIH)

NIH is the nation’s medical research agency—making important discoveries that improve health and save lives.

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Substance Abuse and Mental Health Services Administration (SAMHSA)

SAMHSA leads public health efforts to advance the behavioral health of the nation.

Visit SAMHSA for more info
Content last reviewed April 16, 2026
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