republic-os/legislation/us/states/ca/20092010/ab-1543.md

---
type: "Bill"
title: "Medicare supplement coverage."
description: "Existing law, the Knox-Keene Health Care Service Plan Act of 1975 (Knox-Keene Act) , provides for the licensure and regulation of health care service plans by the Department of Managed Health Care and makes a willful violation of the act a crime. Existing law provides for the regulation of health insurers by the Department of Insurance. Existing law requires plans and insurers that issue Medicare supplement contracts or policies, as defined, to comply with specified requirements."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "20092010"
identifier: "AB 1543"
citation: "California AB 1543 (20092010)"
classification: ["bill"]
subjects: ["Medicare supplement coverage."]
status: "enacted"
primary_sponsors: ["Jones"]
version_count: 9
action_count: 26
vote_count: 6
first_action: "2009-03-04"
last_action: "2009-07-02"
source: "openstates"
source_identifier: "ocd-bill/87161379-92b9-4535-9041-4fb087b33b25"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=200920100AB1543"
source_hash: "4e37aa2ce2deea5e34513a307b1a0f4b7ac457128a277bdab19d355703463db9"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-ca"]
---

# California AB 1543 (20092010) — Medicare supplement coverage.

Existing law, the Knox-Keene Health Care Service Plan Act of 1975 (Knox-Keene Act) , provides for the licensure and regulation of health care service plans by the Department of Managed Health Care and makes a willful violation of the act a crime. Existing law provides for the regulation of health insurers by the Department of Insurance. Existing law requires plans and insurers that issue Medicare supplement contracts or policies, as defined, to comply with specified requirements.

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **03/04/09 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200920100AB1543&version=20090AB154399INT)
2. **04/20/09 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200920100AB1543&version=20090AB154398AMD)
3. **05/06/09 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200920100AB1543&version=20090AB154397AMD)
4. **05/21/09 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200920100AB1543&version=20090AB154396AMD)
5. **06/11/09 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200920100AB1543&version=20090AB154395AMD)
6. **06/23/09 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200920100AB1543&version=20090AB154394AMD)
7. **07/07/09 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200920100AB1543&version=20090AB154392CHP)
8. **AB1543** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=200920100AB1543)
9. **07/07/09 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200920100AB1543&version=20090AB154393ENR)

## Votes

- AB 1543 HEALTH Consent Calendar Second Day Regular Session — **pass** (pass) · lower
- Do pass, but re-refer to the Committee on Appropriations. — **pass** (pass) · upper
- Assembly 3rd Reading AB1543 Jones Urgency Clause — **pass** (pass) · upper
- AB 1543 JONES Concurrence in Senate Amendments — **pass** (pass) · lower
- Do pass and be re-referred to the Committee on Appropriations. — **pass** (pass) · lower
- Do pass, to Consent Calendar. — **pass** (pass) · lower

## Sponsors

- Jones — primary (person)
- Adams — coauthor (person)
- Ammiano — coauthor (person)
- Audra Strickland — coauthor (person)
- Block — coauthor (person)
- Bonnie Lowenthal — coauthor (person)
- Carter — coauthor (person)
- Conway — coauthor (person)
- De La Torre — coauthor (person)
- Emmerson — coauthor (person)
- Fletcher — author (person)
- Hall — coauthor (person)
- Hayashi — coauthor (person)
- Hernandez — coauthor (person)
- Nava — coauthor (person)
- Salas — coauthor (person)
- V. Manuel Perez — coauthor (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2009-03-04** Read first time. To print. `reading-1`
- **2009-03-05** From printer. May be heard in committee April 4.
- **2009-04-02** Referred to Com. on HEALTH. `referral-committee`
- **2009-04-20** From committee chair, with author's amendments: Amend, and re-refer to Com. on HEALTH. Read second time and amended. `amendment-introduction, reading-2, amendment-passage, reading-1`
- **2009-04-21** Re-referred to Com. on HEALTH. `referral-committee`
- **2009-05-05** In committee: Set, first hearing. Hearing canceled at the request of author.
- **2009-05-06** From committee chair, with author's amendments: Amend, and re-refer to Com. on HEALTH. Read second time and amended. `amendment-introduction, reading-2, amendment-passage, reading-1`
- **2009-05-07** Re-referred to Com. on HEALTH. `referral-committee`
- **2009-05-12** From committee: Do pass, and re-refer to Com. on APPR. Re-referred. (Ayes 19. Noes 0.) (May 12). `committee-passage-favorable, committee-passage`
- **2009-05-21** From committee chair, with author's amendments: Amend, and re-refer to Com. on APPR. Read second time and amended. `amendment-introduction, reading-2, amendment-passage, reading-1`
- **2009-05-26** Re-referred to Com. on APPR. `referral-committee`
- **2009-05-29** From committee: Do pass. To Consent Calendar. (May 28). `committee-passage-favorable, committee-passage`
- **2009-05-29** Read second time. To Consent Calendar. `reading-2, reading-1`
- **2009-06-02** Read third time. Urgency clause adopted. Passed and to Senate. (Ayes 76. Noes 0. Page 1997.) `reading-3, passage, reading-1`
- **2009-06-03** In Senate. Read first time. To Com. on RLS. for assignment. `reading-1`
- **2009-06-11** Referred to Com. on HEALTH. `referral-committee`
- **2009-06-11** From committee chair, with author's amendments: Amend, and re-refer to committee. Read second time, amended, and re-referred to Com. on HEALTH. `amendment-introduction, reading-2, amendment-passage, referral-committee, reading-1`
- **2009-06-18** From committee: Do pass, and re-refer to Com. on APPR. Re-referred. (Ayes 8. Noes 0.) (June 17). `committee-passage-favorable, committee-passage`
- **2009-06-22** From committee: Be placed on second reading file pursuant to Senate Rule 28.8 and be amended. `amendment-passage, committee-passage`
- **2009-06-23** Read second time, amended, and to third reading. `amendment-passage, reading-2, reading-1`
- **2009-06-28** Read third time. Urgency clause adopted. Passed and to Assembly. (Ayes 40. Noes 0. Page 1500.) `reading-3, passage, reading-1`
- **2009-06-28** In Assembly. Concurrence in Senate amendments pending. May be considered on or after June 30 pursuant to Assembly Rule 77.
- **2009-06-30** Senate amendments concurred in. To enrollment. (Ayes 77. Noes 0. Page 2314.) `amendment-passage, committee-passage-favorable`
- **2009-06-30** Enrolled and to the Governor at 6:10 p.m.
- **2009-07-02** Approved by the Governor. `executive-signature`
- **2009-07-02** Chaptered by Secretary of State - Chapter 10, Statutes of 2009.

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/87161379-92b9-4535-9041-4fb087b33b25`. Confidence: reported (aggregated from official California legislature records).