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    SB-503
    Health & Public Health

    Health care services: artificial intelligence.

    Engrossed
    CA
    ∙
    2025-2026 Regular Session
    0
    0
    Track
    Track

    Key Takeaways

    • Requires healthcare AI systems to be monitored and tested for bias in clinical decisions and resource allocation.
    • Mandates developers to mitigate discriminatory impacts on patients based on protected characteristics.
    • Requires annual third-party audits of healthcare AI systems starting January 2030.
    • Requires developers to publicly post summaries of AI bias audit results on their websites.

    Summary

    Senator Weber Pierson's artificial intelligence oversight legislation establishes new requirements for health care AI systems in California, mandating developers and deployers to identify and address potential biases in clinical decision-making and resource allocation tools. The bill creates an ongoing duty for these entities to monitor AI systems for discriminatory impacts on protected characteristics and implement reasonable mitigation measures when bias risks are detected.

    The legislation institutes mandatory third-party auditing of health care AI systems beginning January 1, 2030. Developers must undergo annual independent assessments of their bias identification and mitigation practices, with audit summaries to be posted publicly on their websites. The requirements apply to a broad range of health care settings, including hospitals, clinics, physician offices, and group practices that utilize AI for clinical or resource decisions.

    The bill defines key roles and responsibilities, specifying that organizations can serve as both developers and deployers of health care AI systems. It preserves existing discrimination protections by explicitly stating that compliance with the new requirements does not shield entities from bias-related legal claims. The provisions supplement, rather than replace, current state regulations governing artificial intelligence and automated decision systems in health care settings.

    Key Dates

    Next Step
    Referred to the Assembly Standing Committee on Appropriations
    Next Step
    Assembly Committee
    Referred to the Assembly Standing Committee on Appropriations
    Hearing scheduled for , 1021 O Street, Room 1100
    Assembly Privacy And Consumer Protection Hearing
    Assembly Committee
    Assembly Privacy And Consumer Protection Hearing
    Do pass as amended and be re-referred to the Committee on [Appropriations]
    Assembly Health Hearing
    Assembly Committee
    Assembly Health Hearing
    Do pass as amended and be re-referred to the Committee on [Privacy and Consumer Protection]
    Vote on Senate Floor
    Senate Floor
    Vote on Senate Floor
    Special Consent SB503 Weber Pierson et al
    Senate Appropriations Hearing
    Senate Committee
    Senate Appropriations Hearing
    Do pass
    Senate Appropriations Hearing
    Senate Committee
    Senate Appropriations Hearing
    Placed on suspense file
    Senate Judiciary Hearing
    Senate Committee
    Senate Judiciary Hearing
    Do pass, but first be re-referred to the Committee on [Appropriations]
    Senate Health Hearing
    Senate Committee
    Senate Health Hearing
    Do pass as amended, but first amend, and re-refer to the Committee on [Governmental Organization]
    Introduced
    Senate Floor
    Introduced
    Introduced. Read first time. To Com. on RLS. for assignment. To print.

    Contacts

    Profile
    Mike GipsonD
    Assemblymember
    Bill Author
    Not Contacted
    Not Contacted
    Profile
    Joaquin ArambulaD
    Assemblymember
    Committee Member
    Not Contacted
    Not Contacted
    Profile
    Buffy WicksD
    Assemblymember
    Committee Member
    Not Contacted
    Not Contacted
    Profile
    Lisa CalderonD
    Assemblymember
    Committee Member
    Not Contacted
    Not Contacted
    Profile
    Akilah Weber PiersonD
    Senator
    Bill Author
    Not Contacted
    Not Contacted
    0 of 26 row(s) selected.
    Page 1 of 6
    Select All Legislators
    Profile
    Mike GipsonD
    Assemblymember
    Bill Author
    Profile
    Joaquin ArambulaD
    Assemblymember
    Committee Member
    Profile
    Buffy WicksD
    Assemblymember
    Committee Member
    Profile
    Lisa CalderonD
    Assemblymember
    Committee Member
    Profile
    Akilah Weber PiersonD
    Senator
    Bill Author
    Profile
    Isaac BryanD
    Assemblymember
    Bill Author
    Profile
    Mia BontaD
    Assemblymember
    Bill Author
    Profile
    Mike FongD
    Assemblymember
    Committee Member
    Profile
    Lori WilsonD
    Assemblymember
    Bill Author
    Profile
    Tina McKinnorD
    Assemblymember
    Bill Author
    Profile
    Diane DixonR
    Assemblymember
    Committee Member
    Profile
    Gregg HartD
    Assemblymember
    Committee Member
    Profile
    Corey JacksonD
    Assemblymember
    Bill Author
    Profile
    Blanca PachecoD
    Assemblymember
    Committee Member
    Profile
    Gail PellerinD
    Assemblymember
    Committee Member
    Profile
    Kate SanchezR
    Assemblymember
    Committee Member
    Profile
    Tri TaR
    Assemblymember
    Committee Member
    Profile
    Lola Smallwood-CuevasD
    Senator
    Bill Author
    Profile
    Jessica CalozaD
    Assemblymember
    Committee Member
    Profile
    Mark GonzalezD
    Assemblymember
    Committee Member
    Profile
    Heather HadwickR
    Assemblymember
    Committee Member
    Profile
    Rhodesia RansomD
    Assemblymember
    Bill Author
    Profile
    LaShae Sharp-CollinsD
    Assemblymember
    Bill Author
    Profile
    Jose SolacheD
    Assemblymember
    Committee Member
    Profile
    Laura RichardsonD
    Senator
    Bill Author
    Profile
    Sade ElhawaryD
    Assemblymember
    Committee Member

    Get Involved

    Act Now!

    Email the authors or create an email template to send to all relevant legislators.

    Introduced By

    Akilah Weber Pierson
    Akilah Weber PiersonD
    California State Senator
    Co-Authors
    Lori Wilson
    Lori WilsonD
    California State Assembly Member
    Lola Smallwood-Cuevas
    Lola Smallwood-CuevasD
    California State Senator
    LaShae Sharp-Collins
    LaShae Sharp-CollinsD
    California State Assembly Member
    Laura Richardson
    Laura RichardsonD
    California State Senator
    Rhodesia Ransom
    Rhodesia RansomD
    California State Assembly Member
    Tina McKinnor
    Tina McKinnorD
    California State Assembly Member
    Corey Jackson
    Corey JacksonD
    California State Assembly Member
    Mike Gipson
    Mike GipsonD
    California State Assembly Member
    Sade Elhawary
    Sade ElhawaryD
    California State Assembly Member
    Isaac Bryan
    Isaac BryanD
    California State Assembly Member
    Mia Bonta
    Mia BontaD
    California State Assembly Member
    40% progression
    Bill has passed all readings in its first house and is ready to move to the other house (5/29/2025)

    Latest Voting History

    View History
    July 16, 2025
    PASS
    Assembly Committee
    Assembly Privacy And Consumer Protection Hearing
    AyesNoesNVRTotalResult
    130215PASS

    Key Takeaways

    • Requires healthcare AI systems to be monitored and tested for bias in clinical decisions and resource allocation.
    • Mandates developers to mitigate discriminatory impacts on patients based on protected characteristics.
    • Requires annual third-party audits of healthcare AI systems starting January 2030.
    • Requires developers to publicly post summaries of AI bias audit results on their websites.

    Get Involved

    Act Now!

    Email the authors or create an email template to send to all relevant legislators.

    Introduced By

    Akilah Weber Pierson
    Akilah Weber PiersonD
    California State Senator
    Co-Authors
    Lori Wilson
    Lori WilsonD
    California State Assembly Member
    Lola Smallwood-Cuevas
    Lola Smallwood-CuevasD
    California State Senator
    LaShae Sharp-Collins
    LaShae Sharp-CollinsD
    California State Assembly Member
    Laura Richardson
    Laura RichardsonD
    California State Senator
    Rhodesia Ransom
    Rhodesia RansomD
    California State Assembly Member
    Tina McKinnor
    Tina McKinnorD
    California State Assembly Member
    Corey Jackson
    Corey JacksonD
    California State Assembly Member
    Mike Gipson
    Mike GipsonD
    California State Assembly Member
    Sade Elhawary
    Sade ElhawaryD
    California State Assembly Member
    Isaac Bryan
    Isaac BryanD
    California State Assembly Member
    Mia Bonta
    Mia BontaD
    California State Assembly Member

    Summary

    Senator Weber Pierson's artificial intelligence oversight legislation establishes new requirements for health care AI systems in California, mandating developers and deployers to identify and address potential biases in clinical decision-making and resource allocation tools. The bill creates an ongoing duty for these entities to monitor AI systems for discriminatory impacts on protected characteristics and implement reasonable mitigation measures when bias risks are detected.

    The legislation institutes mandatory third-party auditing of health care AI systems beginning January 1, 2030. Developers must undergo annual independent assessments of their bias identification and mitigation practices, with audit summaries to be posted publicly on their websites. The requirements apply to a broad range of health care settings, including hospitals, clinics, physician offices, and group practices that utilize AI for clinical or resource decisions.

    The bill defines key roles and responsibilities, specifying that organizations can serve as both developers and deployers of health care AI systems. It preserves existing discrimination protections by explicitly stating that compliance with the new requirements does not shield entities from bias-related legal claims. The provisions supplement, rather than replace, current state regulations governing artificial intelligence and automated decision systems in health care settings.

    40% progression
    Bill has passed all readings in its first house and is ready to move to the other house (5/29/2025)

    Key Dates

    Next Step
    Referred to the Assembly Standing Committee on Appropriations
    Next Step
    Assembly Committee
    Referred to the Assembly Standing Committee on Appropriations
    Hearing scheduled for , 1021 O Street, Room 1100
    Assembly Privacy And Consumer Protection Hearing
    Assembly Committee
    Assembly Privacy And Consumer Protection Hearing
    Do pass as amended and be re-referred to the Committee on [Appropriations]
    Assembly Health Hearing
    Assembly Committee
    Assembly Health Hearing
    Do pass as amended and be re-referred to the Committee on [Privacy and Consumer Protection]
    Vote on Senate Floor
    Senate Floor
    Vote on Senate Floor
    Special Consent SB503 Weber Pierson et al
    Senate Appropriations Hearing
    Senate Committee
    Senate Appropriations Hearing
    Do pass
    Senate Appropriations Hearing
    Senate Committee
    Senate Appropriations Hearing
    Placed on suspense file
    Senate Judiciary Hearing
    Senate Committee
    Senate Judiciary Hearing
    Do pass, but first be re-referred to the Committee on [Appropriations]
    Senate Health Hearing
    Senate Committee
    Senate Health Hearing
    Do pass as amended, but first amend, and re-refer to the Committee on [Governmental Organization]
    Introduced
    Senate Floor
    Introduced
    Introduced. Read first time. To Com. on RLS. for assignment. To print.

    Latest Voting History

    View History
    July 16, 2025
    PASS
    Assembly Committee
    Assembly Privacy And Consumer Protection Hearing
    AyesNoesNVRTotalResult
    130215PASS

    Contacts

    Profile
    Mike GipsonD
    Assemblymember
    Bill Author
    Not Contacted
    Not Contacted
    Profile
    Joaquin ArambulaD
    Assemblymember
    Committee Member
    Not Contacted
    Not Contacted
    Profile
    Buffy WicksD
    Assemblymember
    Committee Member
    Not Contacted
    Not Contacted
    Profile
    Lisa CalderonD
    Assemblymember
    Committee Member
    Not Contacted
    Not Contacted
    Profile
    Akilah Weber PiersonD
    Senator
    Bill Author
    Not Contacted
    Not Contacted
    0 of 26 row(s) selected.
    Page 1 of 6
    Select All Legislators
    Profile
    Mike GipsonD
    Assemblymember
    Bill Author
    Profile
    Joaquin ArambulaD
    Assemblymember
    Committee Member
    Profile
    Buffy WicksD
    Assemblymember
    Committee Member
    Profile
    Lisa CalderonD
    Assemblymember
    Committee Member
    Profile
    Akilah Weber PiersonD
    Senator
    Bill Author
    Profile
    Isaac BryanD
    Assemblymember
    Bill Author
    Profile
    Mia BontaD
    Assemblymember
    Bill Author
    Profile
    Mike FongD
    Assemblymember
    Committee Member
    Profile
    Lori WilsonD
    Assemblymember
    Bill Author
    Profile
    Tina McKinnorD
    Assemblymember
    Bill Author
    Profile
    Diane DixonR
    Assemblymember
    Committee Member
    Profile
    Gregg HartD
    Assemblymember
    Committee Member
    Profile
    Corey JacksonD
    Assemblymember
    Bill Author
    Profile
    Blanca PachecoD
    Assemblymember
    Committee Member
    Profile
    Gail PellerinD
    Assemblymember
    Committee Member
    Profile
    Kate SanchezR
    Assemblymember
    Committee Member
    Profile
    Tri TaR
    Assemblymember
    Committee Member
    Profile
    Lola Smallwood-CuevasD
    Senator
    Bill Author
    Profile
    Jessica CalozaD
    Assemblymember
    Committee Member
    Profile
    Mark GonzalezD
    Assemblymember
    Committee Member
    Profile
    Heather HadwickR
    Assemblymember
    Committee Member
    Profile
    Rhodesia RansomD
    Assemblymember
    Bill Author
    Profile
    LaShae Sharp-CollinsD
    Assemblymember
    Bill Author
    Profile
    Jose SolacheD
    Assemblymember
    Committee Member
    Profile
    Laura RichardsonD
    Senator
    Bill Author
    Profile
    Sade ElhawaryD
    Assemblymember
    Committee Member