Therapeutic Physicists

The Registration Unit of the RHB ​authorizes physicists that provide therapeutic physics services. Approved physicists are called Therapeutic Calibration Physicists (TCP) and Therapeutic Survey Physicists (TSP).  ​A current list of these physicists is provided below.

​Forms

New Application

• CDPH 4256 (PDF) - Application for Authorization as Therapeutic Survey Physicist or Therapeutic Calibration Physicist
• Guidance for completing form CDPH 4256 (PDF)
  

Renewal Application

• CDPH 4256 R (PDF) - Application for Renewal of Authorization as Therapeutic Survey Physicist or Therapeutic Calibration Physicist
• Guidance for completing form CDPH 4256R (PDF).
  
• NOTE:  Pursuant to Title 17, California Code of Regulations section 30313.40 , individuals authorized or approved to conduct therapeutic X-ray systems calibrations or radiation protection surveys prior to October 1, 2020 shall remain authorized or approved only if the individual submits to the Department:
  
• An acceptable application pursuant to sections 30313.09 or 30313.20 , as applicable, on or before October 1, 2023. If the application is not received by that date, authorization is canceled. To re-establish a canceled authorization, an individual shall comply with sections 30313.07  or 30313.15  and shall be considered a new applicant. 
• See information notice (PDF) for more information.

Name Address Change Form

• CDPH 8391 P (PDF) - Authorized Physicist Report of Name or Address Change

​License Verification Request Form

CA Approved Therapeutic Physicists

• Approved Therapeutic Calibration Physicists (PDF)​
  
• Approved Therapeutic Survey Physicists (PDF)​
  

​​Therapeutic Physicist​ FAQs

Contact Information

• Email questions/inquiries to: RHBRMT@cdph.ca.gov