---
type: "Bill"
title: "Relating to medical assistance reimbursement of emergency medical services; and declaring an emergency."
description: "Modifies the requirements for Medicaid supplemental reimbursements paid to emergency medical services providers. Declares an emergency, effective on passage."
jurisdiction: "us/states/or"
legislature: "Oregon Legislative Assembly"
session: "2026R1"
identifier: "HB 4156"
citation: "Oregon HB 4156 (2026R1)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Dacia Grayber", "Gregory Smith", "Lew Frederick", "Vikki Breese-Iverson"]
version_count: 5
action_count: 21
vote_count: 4
first_action: "2026-02-02T16:50:03+00:00"
last_action: "2026-04-06T17:33:05+00:00"
source: "openstates"
source_identifier: "ocd-bill/df8407de-9f17-4b39-aeef-900e7505c34c"
source_url: "https://olis.oregonlegislature.gov/liz/2026R1/Measures/Overview/HB4156"
source_hash: "61a880256fbd670b7eaff66e3b8a7f33ae4b11b4a509767835246f0819261e50"
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-or"]
---

# Oregon HB 4156 (2026R1) — Relating to medical assistance reimbursement of emergency medical services; and declaring an emergency.

Modifies the requirements for Medicaid supplemental reimbursements paid to emergency medical services providers. Declares an emergency, effective on passage.

## Version chain

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

1. **House Amendments to Introduced** (filed) — [source](https://olis.oregonlegislature.gov/liz/2026R1/Downloads/MeasureDocument/HB4156/House%20Amendments%20to%20Introduced)
2. **Introduced** (filed) — [source](https://olis.oregonlegislature.gov/liz/2026R1/Downloads/MeasureDocument/HB4156/Introduced)
3. **A-Engrossed** (committee substitute) — [source](https://olis.oregonlegislature.gov/liz/2026R1/Downloads/MeasureDocument/HB4156/A-Engrossed)
4. **HHC Amendment -2** (committee substitute) — [source](https://olis.oregonlegislature.gov/liz/2026R1/Downloads/ProposedAmendment/30389)
5. **Enrolled** (enrolled) — [source](https://olis.oregonlegislature.gov/liz/2026R1/Downloads/MeasureDocument/HB4156/Enrolled)

## Votes

- Third reading. Carried by Smith G. Passed. — **42–0** (pass) · lower
- Heard and Reported Out with Amendments — **8–0** (pass) · lower
- Third reading. Carried by Patterson. Passed. — **29–0** (pass) · upper
- Heard and Reported Out — **5–0** (pass) · upper

## Sponsors

- Dacia Grayber — primary (person)
- Gregory Smith — primary (person)
- Lew Frederick — primary (person)
- Vikki Breese-Iverson — primary (person)
- Anthony Broadman — cosponsor (person)
- Hai Pham — cosponsor (person)
- Jami Cate — cosponsor (person)
- Janeen Sollman — cosponsor (person)
- Lesly Muñoz — cosponsor (person)
- Sue Rieke Smith — cosponsor (person)

## Timeline

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

- **2026-02-02T16:50:03+00:00** First reading. Referred to Speaker's desk. `introduction, reading-1, referral-committee`
- **2026-02-02T17:51:51+00:00** Referred to Health Care with subsequent referral to Ways and Means. `referral-committee`
- **2026-02-05T23:01:00+00:00** Public Hearing held.
- **2026-02-12T23:02:00+00:00** Work Session held.
- **2026-02-16T23:32:20+00:00** Recommendation: Do pass with amendments, be printed A-Engrossed, and subsequent referral to Ways and Means be rescinded. `committee-passage-favorable`
- **2026-02-16T23:32:21+00:00** Subsequent referral to Ways and Means rescinded by order of the Speaker.
- **2026-02-17T22:09:36+00:00** Second reading. `reading-2`
- **2026-02-19T01:40:31+00:00** Rules suspended. Carried over to February 19, 2026 Calendar.
- **2026-02-19T20:48:23+00:00** Rules suspended. Carried over to February 20, 2026 Calendar.
- **2026-02-20T18:32:45+00:00** Third reading. Carried by Smith G. Passed. `passage, reading-3`
- **2026-02-20T21:49:18+00:00** First reading. Referred to President's desk. `introduction, reading-1, referral-committee`
- **2026-02-20T22:59:40+00:00** Referred to Health Care. `referral-committee`
- **2026-02-25T23:02:00+00:00** Public Hearing and Work Session held.
- **2026-02-27T17:42:13+00:00** Recommendation: Do pass the A-Eng. bill. `committee-passage-favorable`
- **2026-02-27T20:49:42+00:00** Second reading. `reading-2`
- **2026-03-02T22:05:10+00:00** Carried over to 03-03 by unanimous consent.
- **2026-03-03T20:22:00+00:00** Third reading. Carried by Patterson. Passed. `passage, reading-3`
- **2026-03-04T18:52:04+00:00** Speaker signed. `passage`
- **2026-03-05T16:38:22+00:00** President signed. `passage`
- **2026-03-31T21:07:00+00:00** Governor signed. `executive-signature`
- **2026-04-06T17:33:05+00:00** Chapter 70, (2026 Laws): Effective date March 31, 2026.

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/df8407de-9f17-4b39-aeef-900e7505c34c`. Confidence: reported (aggregated from official Oregon legislature records).