The Los Angeles County Department of Public Health (DPH) maintains this health professionals' website to facilitate easy access to public health resources including information on how to report communicable diseases and how to consult DPH specialists. All comments and suggestions on how to improve this website are welcome.

For COVID-19 resources for health professionals, please visit our COVID-19 hub

LA HAN - Los Angeles Health Alert Network

Los Angeles Health Alert Network (LAHAN)

  • Subscribe to receive important public health information for LA health care professionals.
  • Visit the LAHAN webpage to see past health alerts, advisories, and updates on topics such as local or national disease outbreaks and emerging infectious diseases.

Clip Board picture

Mandatory Reporting

  • California law mandates that health care providers report over 85 diseases or conditions (including animal bites to humans) to their local health department.
  • This page summarizes how professionals can report by disease or condition (including animal bites) and includes links to reporting forms and phone numbers.

Telephone picture


  • Phone consultation is available for health care providers weekdays 8:00 am-5:00 pm for all communicable diseases including TB and STD, veterinary public health, and public health laboratory questions.
  • For urgent public health consults that cannot wait until the next working day, health care providers may call 213-974-1234 and ask for the physician on call.

webinar picture

DPH Sponsored Continuing Medical Education

  • Learn at a time that suits your schedule – view a webinar or read an article - and earn free CME.
  • Visit the CME webpage to learn more about the topics covered.

Public Health Rx for Prevention

Public Health’s Rx for Prevention

  • Rx is the sibling publication of LAHAN. It addresses non-urgent public health subjects in clinical medicine, community health, and health policy. Single topic articles are released
  • View the publication online or subscribe here.