---
type: "Bill"
title: "Concerning dental hygienists."
description: "Concerning dental hygienists."
jurisdiction: "us/states/wa"
legislature: "Washington Legislature"
session: "2019-2020"
identifier: "HB 1554"
citation: "Washington HB 1554 (2019-2020)"
classification: ["bill"]
subjects: ["DENTISTS AND DENTISTRY"]
status: "enacted"
primary_sponsors: ["Thai"]
version_count: 1
action_count: 22
vote_count: 2
first_action: "2019-01-24"
last_action: "2019-04-23"
source: "openstates"
source_identifier: "ocd-bill/a6c9d0ee-fdd0-4927-b7ff-a08cf38349e5"
source_url: "http://apps.leg.wa.gov/billinfo/summary.aspx?bill=1554&year=2019"
source_hash: "965366c22496ed06ad22d291bbfb041b2fb8bc5058b313bad562ec51227077b1"
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 1554 (2019-2020) — Concerning dental hygienists.

## 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/2019-20/Htm/Bills/House%20Bills/1554.htm)

## Votes

- Final Passage (#5) — **97–0** (pass) · lower
- 3rd Reading & Final Passage (#41) — **41–0** (pass) · upper

## Sponsors

- Thai — primary (person)
- Appleton — cosponsor (person)
- Gregerson — cosponsor (person)
- Harris — cosponsor (person)
- Jinkins — cosponsor (person)
- Macri — cosponsor (person)
- Robinson — cosponsor (person)
- Slatter — cosponsor (person)
- Stonier — cosponsor (person)

## Timeline

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

- **2019-01-24** First reading, referred to Health Care & Wellness. `reading-1`
- **2019-02-22** HCW - Majority; do pass.
- **2019-02-22** Referred to Rules 2 Review.
- **2019-03-01** Placed on second reading by Rules Committee.
- **2019-03-04** Rules suspended. Placed on Third Reading.
- **2019-03-04** Third reading, passed; yeas, 97; nays, 0; absent, 0; excused, 1. `reading-3`
- **2019-03-06** First reading, referred to Health & Long Term Care. `reading-1`
- **2019-03-29** HLTC - Majority; do pass.
- **2019-04-01** Passed to Rules Committee for second reading.
- **2019-04-11** Placed on second reading by Rules Committee.
- **2019-04-12** Rules suspended. Placed on Third Reading.
- **2019-04-12** Third reading, passed; yeas, 41; nays, 0; absent, 0; excused, 8. `reading-3`
- **2019-04-15** Speaker signed. `passage`
- **2019-04-16** President signed. `passage`
- **2019-04-17** Delivered to Governor.
- **2019-04-23** Governor signed. `executive-signature`
- **2019-04-23** Chapter 111, 2019 Laws. `became-law`
- **2019-04-23** Effective date 7/28/2019. `became-law`
- **2019-02-13T18:30:00+00:00** Scheduled for public hearing in the House Committee on Health Care & Wellness at 01:30 PM
- **2019-02-22T13:00:00+00:00** Scheduled for public hearing in the House Committee on Health Care & Wellness at 08:00 AM
- **2019-03-25T17:30:00+00:00** Scheduled for public hearing in the Senate Committee on Health & Long Term Care at 01:30 PM
- **2019-03-29T12:00:00+00:00** Scheduled for public hearing in the Senate Committee on Health & Long Term Care at 08:00 AM

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/a6c9d0ee-fdd0-4927-b7ff-a08cf38349e5`. Confidence: reported (aggregated from official Washington legislature records).