---
type: "Bill"
title: "A bill for an act relating to physician supervision of physician assistants, and including effective date and retroactive applicability provisions. (Formerly HF 189.) Effective 4-12-17."
description: "A bill for an act relating to physician supervision of physician assistants, and including effective date and retroactive applicability provisions. (Formerly HF 189.) Effective 4-12-17."
jurisdiction: "us/states/ia"
legislature: "Iowa General Assembly"
session: "2017-2018"
identifier: "HF 591"
citation: "Iowa HF 591 (2017-2018)"
classification: ["bill"]
subjects: ["health-related professions", "medical care", "medicine", "physician assisting", "professional licensure", "professions"]
status: "enacted"
primary_sponsors: []
version_count: 4
action_count: 17
vote_count: 2
first_action: "2017-03-09"
last_action: "2017-04-12"
source: "openstates"
source_identifier: "ocd-bill/8e971d86-f593-48b4-9eef-fde913c50202"
source_url: "https://www.legis.iowa.gov/legislation/billTracking/billHistory?billName=HF 591&ga=87"
source_hash: "c7f6142633e1059162542d4f536e257da1f7045af29cd95ca332bac185427105"
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-ia"]
---

# Iowa HF 591 (2017-2018) — A bill for an act relating to physician supervision of physician assistants, and including effective date and retroactive applicability provisions. (Formerly HF 189.) Effective 4-12-17.

## Version chain

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

1. **Introduced** (filed) — [source](https://www.legis.iowa.gov/docs/publications/LGI/87/attachments/HF591.html)
2. **Amendment H-1193** (committee substitute) — [source](https://www.legis.iowa.gov/docs/publications/AMDI/87/H1193.pdf)
3. **Reprinted** (committee substitute) — [source](https://www.legis.iowa.gov/docs/publications/LGR/87/attachments/HF591.html)
4. **Enrolled** (enrolled) — [source](https://www.legis.iowa.gov/docs/publications/LGE/87/attachments/HF591.html)

## Votes

- Shall the bill pass? — **50–0** (pass) · upper
- Shall the bill pass? — **95–0** (pass) · lower

## Timeline

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

- **2017-03-09** Introduced, placed on calendar. `introduction`
- **2017-03-14** Amendment H-1193 filed. `amendment-introduction`
- **2017-03-15** Amendment H-1193 adopted. `amendment-passage`
- **2017-03-15** Passed House, ayes 95, nays 0. `passage`
- **2017-03-15** Explanation of vote.
- **2017-03-16** Explanation of vote.
- **2017-03-15** Immediate message.
- **2017-03-16** Message from House.
- **2017-03-16** Read first time, referred to Human Resources. `reading-1`
- **2017-03-16** Subcommittee: Costello, Quirmbach, and Segebart.
- **2017-03-29** Committee report, recommending passage. `committee-passage`
- **2017-04-04** Passed Senate, ayes 50, nays none. `passage`
- **2017-04-04** Immediate message.
- **2017-04-04** Message from Senate.
- **2017-04-11** Reported correctly enrolled, signed by Speaker and President.
- **2017-04-11** Sent to Governor. `executive-receipt`
- **2017-04-12** Signed by Governor. `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/8e971d86-f593-48b4-9eef-fde913c50202`. Confidence: reported (aggregated from official Iowa legislature records).