---
type: "Bill"
title: "Establishing and authorizing the profession of dental therapy."
description: "Establishing and authorizing the profession of dental therapy."
jurisdiction: "us/states/wa"
legislature: "Washington Legislature"
session: "2023-2024"
identifier: "HB 1678"
citation: "Washington HB 1678 (2023-2024)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Riccelli"]
version_count: 4
action_count: 33
vote_count: 3
first_action: "2023-01-30"
last_action: "2023-05-15"
source: "openstates"
source_identifier: "ocd-bill/408471b7-a9e8-4001-bad4-17b33b0eab98"
source_url: "http://apps.leg.wa.gov/billinfo/summary.aspx?bill=1678&year=2023"
source_hash: "8f6ffa13535572e4b1b80e925e44596c7811fc064d564e5776143d5c49a2d05b"
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-wa"]
---

# Washington HB 1678 (2023-2024) — Establishing and authorizing the profession of dental therapy.

## Version chain

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

1. **Bill** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2023-24/Htm/Bills/House%20Bills/1678.htm)
2. **Engrossed Substitute Bill** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2023-24/Htm/Bills/House%20Bills/1678-S.E.htm)
3. **Substitute Bill** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2023-24/Htm/Bills/House%20Bills/1678-S.htm)
4. **Substitute Passed Legislature** (committee substitute) — [source](http://lawfilesext.leg.wa.gov/Biennium/2023-24/Htm/Bills/House%20Passed%20Legislature/1678-S.PL.htm)

## Votes

- 3rd Reading & Final Passage (#41) — **53–42** (pass) · lower
- 423 King Pg 3 Ln 7 (#38) — **22–27** (fail) · upper
- 3rd Reading & Final Passage (#39) — **30–19** (pass) · upper

## Sponsors

- Riccelli — primary (person)
- Bateman — cosponsor (person)
- Chopp — cosponsor (person)
- Davis — cosponsor (person)
- Entenman — cosponsor (person)
- Gregerson — cosponsor (person)
- Harris — cosponsor (person)
- Kloba — cosponsor (person)
- Lekanoff — cosponsor (person)
- Macri — cosponsor (person)
- Morgan — cosponsor (person)
- Ormsby — cosponsor (person)
- Peterson — cosponsor (person)
- Pollet — cosponsor (person)
- Ramos — cosponsor (person)
- Ryu — cosponsor (person)
- Simmons — cosponsor (person)
- Slatter — cosponsor (person)
- Stonier — cosponsor (person)
- Taylor — cosponsor (person)
- Tharinger — cosponsor (person)

## Timeline

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

- **2023-01-30** First reading, referred to Health Care & Wellness. `reading-1`
- **2023-02-07** Public hearing in the House Committee on Health Care & Wellness at 1:30 PM.
- **2023-02-17** Executive action taken in the House Committee on Health Care & Wellness at 8:00 AM.
- **2023-02-17** HCW - Majority; 1st substitute bill be substituted, do pass. `substitution`
- **2023-02-17** Minority; do not pass. `committee-passage-unfavorable`
- **2023-02-17** Minority; without recommendation. `committee-passage-unfavorable`
- **2023-02-17** Referred to Appropriations. `referral-committee`
- **2023-02-21** Public hearing in the House Committee on Appropriations at 1:30 PM.
- **2023-02-23** Executive action taken in the House Committee on Appropriations at 9:00 AM.
- **2023-02-23** APP - Majority; do pass 1st substitute bill proposed by Health Care & Wellness. `committee-passage-favorable`
- **2023-02-23** Minority; do not pass. `committee-passage-unfavorable`
- **2023-02-23** Minority; without recommendation. `committee-passage-unfavorable`
- **2023-02-25** Referred to Rules 2 Review. `referral-committee`
- **2023-03-01** Rules Committee relieved of further consideration. Placed on second reading. `reading-2`
- **2023-03-04** 1st substitute bill substituted (HCW 23). `substitution`
- **2023-03-04** Floor amendment(s) adopted.
- **2023-03-04** Rules suspended. Placed on Third Reading. `reading-3`
- **2023-03-04** Third reading, passed; yeas, 53; nays, 42; absent, 0; excused, 3. `reading-3`
- **2023-03-07** First reading, referred to Health & Long Term Care. `reading-1`
- **2023-03-21** Public hearing in the Senate Committee on Health & Long Term Care at 8:00 AM.
- **2023-03-23** Executive action taken in the Senate Committee on Health & Long Term Care at 10:30 AM.
- **2023-03-23** HLTC - Majority; do pass. `committee-passage-favorable`
- **2023-03-23** Minority; without recommendation. `committee-passage-unfavorable`
- **2023-03-24** Passed to Rules Committee for second reading.
- **2023-04-04** Placed on second reading by Rules Committee. `reading-2`
- **2023-04-11** Rules suspended. Placed on Third Reading. `reading-3`
- **2023-04-11** Third reading, passed; yeas, 30; nays, 19; absent, 0; excused, 0. `reading-3`
- **2023-04-14** Speaker signed. `passage`
- **2023-04-18** President signed. `passage`
- **2023-04-19** Delivered to Governor. `executive-receipt`
- **2023-05-15** Governor signed. `executive-signature`
- **2023-05-15** Chapter 460, 2023 Laws. `became-law`
- **2023-05-15** Effective date 1/1/2024*. `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/408471b7-a9e8-4001-bad4-17b33b0eab98`. Confidence: reported (aggregated from official Washington legislature records).