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---
type: "Bill"
title: "Health care service plans: mergers and acquisitions."
description: "Existing law, the Knox-Keene Health Care Service Plan Act of 1975, 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 requires every nonprofit health care service plan applying to restructure, as defined, or convert its activities to secure the approval of the Director of the Department of Managed Health Care. Under existing law, a health care service plan is required to notify the director of any material modifications of its plan or operations, as specified."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "20172018"
identifier: "AB 595"
citation: "California AB 595 (20172018)"
classification: ["bill"]
subjects: ["Health care service plans: mergers and acquisitions."]
status: "enacted"
primary_sponsors: ["Wood"]
version_count: 8
action_count: 30
vote_count: 4
first_action: "2017-02-14"
last_action: "2018-09-07"
source: "openstates"
source_identifier: "ocd-bill/96d678a6-7397-4377-92fe-56d2c748ff9f"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201720180AB595"
source_hash: "7d5868e89dabe83cc3d197b2dd04a064a534c707d7a44ab5d1affb2e0a55fc46"
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 595 (20172018) — Health care service plans: mergers and acquisitions.
Existing law, the Knox-Keene Health Care Service Plan Act of 1975, 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 requires every nonprofit health care service plan applying to restructure, as defined, or convert its activities to secure the approval of the Director of the Department of Managed Health Care. Under existing law, a health care service plan is required to notify the director of any material modifications of its plan or operations, as specified.
## Version chain
The bill's text revisions, in order — the diff chain from filing to enrollment.
1. **02/14/17 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201720180AB595&version=20170AB59599INT)
2. **01/22/18 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201720180AB595&version=20170AB59597AMD)
3. **04/03/17 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201720180AB595&version=20170AB59598AMD)
4. **06/21/18 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201720180AB595&version=20170AB59596AMD)
5. **08/17/18 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201720180AB595&version=20170AB59595AMD)
6. **09/07/18 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201720180AB595&version=20170AB59593CHP)
7. **AB595** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201720180AB595)
8. **08/29/18 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201720180AB595&version=20170AB59594ENR)
## Votes
- AB 595 WOOD Concurrence in Senate Amendments — **5323** (pass) · lower
- Placed on suspense file — **70** (pass) · upper
- Do pass as amended — **61** (pass) · upper
- 3rd Reading AB595 Wood By Monning — **2413** (pass) · upper
## Sponsors
- Wood — primary (person)
## Timeline
The legislative action history — every referral, reading, and vote.
- **2017-02-14** Read first time. To print. `reading-1`
- **2017-02-15** From printer. May be heard in committee March 17.
- **2017-02-27** Referred to Coms. on HEALTH and INS. `referral-committee`
- **2017-04-03** From committee chair, with author's amendments: Amend, and re-refer to Com. on HEALTH. Read second time and amended. `amendment-introduction, amendment-passage, reading-2, reading-1`
- **2017-04-04** Re-referred to Com. on HEALTH. `referral-committee`
- **2017-04-05** From committee: Do pass and re-refer to Com. on INS. (Ayes 12. Noes 2.) (April 4). Re-referred to Com. on INS. `committee-passage-favorable, committee-passage, referral-committee`
- **2017-04-06** Re-referred to Com. on APPR. pursuant to Assembly Rule 96. `referral-committee`
- **2017-05-03** In committee: Set, first hearing. Referred to APPR. suspense file. `referral-committee`
- **2017-05-26** In committee: Hearing postponed by committee.
- **2018-01-18** From committee: Amend, and do pass as amended. (Ayes 13. Noes 4.) (January 18). `amendment-passage, committee-passage, amendment-introduction`
- **2018-01-22** Read second time and amended. Ordered returned to second reading. `reading-1, amendment-passage, reading-2`
- **2018-01-23** Read second time. Ordered to third reading. `reading-2, reading-1`
- **2018-01-29** Read third time. Passed. Ordered to the Senate. (Ayes 54. Noes 22. Page 3861.) `reading-3, passage, reading-1`
- **2018-01-29** In Senate. Read first time. To Com. on RLS. for assignment. `reading-1`
- **2018-03-15** Referred to Coms. on HEALTH and JUD. `referral-committee`
- **2018-06-11** In committee: Hearing postponed by committee.
- **2018-06-21** From committee: Do pass and re-refer to Com. on JUD. (Ayes 7. Noes 1.) (June 20). Re-referred to Com. on JUD. `committee-passage-favorable, committee-passage, referral-committee`
- **2018-06-21** From committee chair, with author's amendments: Amend, and re-refer to committee. Read second time, amended, and re-referred to Com. on JUD. `amendment-passage, referral-committee, reading-2, reading-1, amendment-introduction`
- **2018-06-25** Withdrawn from committee.
- **2018-06-25** Re-referred to Com. on APPR. `referral-committee`
- **2018-08-06** In committee: Referred to APPR. suspense file. `referral-committee`
- **2018-08-17** From committee: Amend, and do pass as amended. (Ayes 6. Noes 1.) (August 16). `amendment-passage, committee-passage, amendment-introduction`
- **2018-08-17** Read second time and amended. Ordered returned to second reading. `reading-1, amendment-passage, reading-2`
- **2018-08-20** Read second time. Ordered to third reading. `reading-2, reading-1`
- **2018-08-23** Read third time. Passed. Ordered to the Assembly. (Ayes 24. Noes 13. Page 5654.). `reading-3, passage, reading-1`
- **2018-08-23** In Assembly. Concurrence in Senate amendments pending. May be considered on or after August 25 pursuant to Assembly Rule 77.
- **2018-08-27** Senate amendments concurred in. To Engrossing and Enrolling. (Ayes 53. Noes 23. Page 6643.). `committee-passage-favorable, amendment-passage`
- **2018-09-04** Enrolled and presented to the Governor at 3 p.m.
- **2018-09-07** Approved by the Governor. `executive-signature`
- **2018-09-07** Chaptered by Secretary of State - Chapter 292, Statutes of 2018.
## Source
OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/96d678a6-7397-4377-92fe-56d2c748ff9f`. Confidence: reported (aggregated from official California legislature records).