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The Radiologic Health Branch (RHB) is within the Radiation Safety and Environmental Management Division of the Department of Public Health. The Branch enforces the laws and regulations addressing ionizing radiation, including radioactive material, designed to protect the public, radiation workers, and the environment. RHB is responsible for providing public health functions associated with administering a radiation control program. This includes licensing of radioactive materials, registration of X-ray-producing machines, certification of medical and industrial X-ray and radioactive material users, inspection of facilities using radiation, investigation of radiation incidents, and surveillance of radioactive contamination in the environment.

Laws & Regulations

What's New

  • IMPORTANT COVID-19 Guidance:New

    1.  NewPursuant to Executive Order (EO) N-08-21 (PDF; 9,512 KB), suspension of the Radiologic Technology Act (RT Act) pursuant to EO N-39-20 issued March 30, 2020 (PDF; 2,017 KB) in response to the Covid-19 pandemic, is effective until September 30, 2021.    The RT Act is re-invoked and enforceable effective October 1, 2021. 

    2. NewRadiologic Technology - Continuing Education Exemption 
    3.  NewRadiologic Technology - Extension of Examination Passage  
    4.  NewRadiologic Technology - Exam Testing Site Guidance (PDF)  
    5.  NewRadiation Safety Inspections  
    6. New X-ray Equipment Survey Guidance


IMPORTANT NOTICE: The information you provide to the RHB may be disclosable under the California Public Records Act (PRA).  In response to PRA requests, RHB may release the address of record for Radiologic Technologists, X-ray Technicians, Nuclear Medicine Technologists, and Certified Supervisor and Operators.  If you wish to provide RHB with an alternate address that will be released to the public upon request, please submit form CDPH 8391 (PDF).

Click on a link below for more information.

 Radioactive Materials Licensing & Compliance

 ​​Radioactive Materials

  • Covid-19 Guidance
  • New Applicants
  • License holders
  • Registration of Generally Licensed Devices
  • Information Notices
  • Forms, Guidance, checklists, fee schedule 

 X-ray Machine Registration & Compliance

X-ray Machine Registration & Compliance

  • COVID-19 Guidance
  • Registration of X-ray Machines
  • Mammography Machine Certification
  • Therapeutic Physicists
  • Mammography Physicists
  • Compliance & Guidance information
  • X-ray Equipment Survey Guidance ​

 Radiologic & Nuclear Medicine Technology

X-ray & NMT Certification & Permitting

 Therapeutic Physicists

 Radiologic Technology Schools

X-ray Schools ​​

  • COVID-19 Guidance
  • Schools for Radiologic Technologists
  • Schools for Limited Permit X-ray Technicians
  • Fluoroscopy Permit Schools​​
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