republic-os/legislation/us/states/ca/20092010/ab-2300.md

---
type: "Bill"
title: "Genetic counselors."
description: "Existing law, the Hereditary Disorders Act, requires the State Department of Public Health to establish hereditary disorder programs, 100 specified, and to license master level genetic counselors and doctoral level geneticists. One of the requirements for licensure is that an individual demonstrate competence by an examination administered or approved by the department. Existing law prohibits an unlicensed person from using the title of genetic counselor."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "20092010"
identifier: "AB 2300"
citation: "California AB 2300 (20092010)"
classification: ["bill"]
subjects: ["Genetic counselors."]
status: "enacted"
primary_sponsors: ["Emmerson"]
version_count: 10
action_count: 27
vote_count: 7
first_action: "2010-02-18"
last_action: "2010-09-29"
source: "openstates"
source_identifier: "ocd-bill/f6bbf26a-0701-4a28-acb4-1bba6fc10d35"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=200920100AB2300"
source_hash: "769703d384bf54e4081059b72f115bb58ec529c699606aaf8509607112db93c9"
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 2300 (20092010) — Genetic counselors.

Existing law, the Hereditary Disorders Act, requires the State Department of Public Health to establish hereditary disorder programs, 100 specified, and to license master level genetic counselors and doctoral level geneticists. One of the requirements for licensure is that an individual demonstrate competence by an examination administered or approved by the department. Existing law prohibits an unlicensed person from using the title of genetic counselor.

## Version chain

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

1. **02/18/10 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200920100AB2300&version=20090AB230099INT)
2. **04/05/10 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200920100AB2300&version=20090AB230098AMD)
3. **05/03/10 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200920100AB2300&version=20090AB230097AMD)
4. **06/17/10 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200920100AB2300&version=20090AB230096AMD)
5. **07/15/10 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200920100AB2300&version=20090AB230095AMD)
6. **08/09/10 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200920100AB2300&version=20090AB230094AMD)
7. **08/18/10 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200920100AB2300&version=20090AB230093AMD)
8. **09/29/10 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200920100AB2300&version=20090AB230091CHP)
9. **AB2300** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=200920100AB2300)
10. **08/30/10 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200920100AB2300&version=20090AB230092ENR)

## Votes

- Do pass as amended. — **pass** (pass) · upper
- AB 2300 Concurrence in Senate Amendments By HAYASHI — **pass** (pass) · lower
- Do pass and re-refer to Committee on Appropriations with recommendation: To Consent Calendar. — **pass** (pass) · lower
- AB 2300 EMMERSON Consent Calendar Second Day Regular Session — **pass** (pass) · lower
- Assembly 3rd Reading AB2300 Emmerson By Emmerson — **pass** (pass) · upper
- Do pass as amended, to Consent Calendar. — **pass** (pass) · lower
- Do pass as amended, and re-refer to the Committee on Appropriations. — **pass** (pass) · upper

## Sponsors

- Emmerson — primary (person)

## Timeline

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

- **2010-02-18** Read first time. To print. `reading-1`
- **2010-02-19** From printer. May be heard in committee March 21.
- **2010-03-11** Referred to Coms. on B. & P. and JUD. `referral-committee`
- **2010-04-05** From committee chair, with author's amendments: Amend, and re-refer to Com. on B.,P. & C.P. Read second time and amended. `amendment-introduction, reading-2, amendment-passage, reading-1`
- **2010-04-05** Re-referred to Com. on B.,P. & C.P. `referral-committee`
- **2010-04-13** From committee: Do pass, and re-refer to Com. on APPR. with recommendation: To Consent Calendar. Re-referred. (Ayes 11. Noes 0.) (April 13). `committee-passage-favorable, committee-passage`
- **2010-04-29** From committee: Amend, and do pass as amended. To Consent Calendar. (April 28). `amendment-introduction, amendment-passage, committee-passage`
- **2010-05-03** Read second time and amended. Ordered returned to second reading. `amendment-passage, reading-2, reading-1`
- **2010-05-04** Read second time. To Consent Calendar. `reading-2, reading-1`
- **2010-05-06** Read third time, passed, and to Senate. (Ayes 74. Noes 0. Page 5054.) `reading-3, passage, reading-1`
- **2010-05-06** In Senate. Read first time. To Com. on RLS. for assignment. `reading-1`
- **2010-05-20** Referred to Com. on HEALTH. `referral-committee`
- **2010-06-10** In committee: Set, first hearing. Hearing canceled at the request of author.
- **2010-06-17** 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`
- **2010-07-15** From committee: Amend, do pass as amended, and re-refer to Com. on APPR. (Ayes 7. Noes 0.) (June 23). `amendment-introduction, amendment-passage, committee-passage`
- **2010-07-15** Read second time and amended. Re-referred to Com. on APPR. `reading-2, amendment-passage, referral-committee, reading-1`
- **2010-08-05** From committee: Amend, and do pass as amended. (Ayes 10. Noes 0.) (August 2). `amendment-introduction, amendment-passage, committee-passage`
- **2010-08-09** Read second time and amended. Ordered to third reading. `amendment-passage, reading-2, reading-1`
- **2010-08-18** Read third time, amended. To second reading. `reading-3, amendment-passage, reading-1`
- **2010-08-19** Read second time. To third reading. `reading-2, reading-1`
- **2010-08-20** Read third time, passed, and to Assembly. (Ayes 31. Noes 0. Page 4703.) `reading-3, passage, reading-1`
- **2010-08-20** In Assembly. Concurrence in Senate amendments pending. May be considered on or after August 24 pursuant to Assembly Rule 77.
- **2010-08-23** Assembly Rule 77 suspended. (Page 6463.)
- **2010-08-23** Senate amendments concurred in. To enrollment. (Ayes 77. Noes 0. Page 6524.) `amendment-passage, committee-passage-favorable`
- **2010-09-03** Enrolled and to the Governor at 11:45 p.m.
- **2010-09-29** Approved by the Governor. `executive-signature`
- **2010-09-29** Chaptered by Secretary of State - Chapter 550, Statutes of 2010.

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/f6bbf26a-0701-4a28-acb4-1bba6fc10d35`. Confidence: reported (aggregated from official California legislature records).