---
type: "Bill"
title: "Physician Assistant Collaboration Requirements"
description: "The act modifies the relationship between a physician assistant and a physician or podiatrist by removing the requirement that a physician assistant be supervised by a physician or podiatrist except in certain circumstances. Instead, a physician assistant must enter into a collaborative agreement with a physician or podiatrist or physician group. The physician or podiatrist must be licensed in good standing in Colorado and be actively practicing with a regular and reliable physical presence in the state."
jurisdiction: "us/states/co"
legislature: "Colorado General Assembly"
session: "2023A"
identifier: "SB 23-083"
citation: "Colorado SB 23-083 (2023A)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Cleave Simpson", "Dafna Michaelson Jenet", "Faith Winter", "Ty Winter"]
version_count: 10
action_count: 19
vote_count: 5
first_action: "2023-01-27T07:00:00+00:00"
last_action: "2023-04-26T06:00:00+00:00"
source: "openstates"
source_identifier: "ocd-bill/848fda71-343d-4d9f-b2e2-5ab452a0b0a6"
source_url: "https://leg.colorado.gov/bills/sb23-083"
source_hash: "7209ce8e4bc7394983d26b441669dd11c3cf20e1307f653deb0c2969b5a35ef2"
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-co"]
---

# Colorado SB 23-083 (2023A) — Physician Assistant Collaboration Requirements

The act modifies the relationship between a physician assistant and a physician or podiatrist by removing the requirement that a physician assistant be supervised by a physician or podiatrist except in certain circumstances. Instead, a physician assistant must enter into a collaborative agreement with a physician or podiatrist or physician group. The physician or podiatrist must be licensed in good standing in Colorado and be actively practicing with a regular and reliable physical presence in the state.

## Version chain

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

1. **Committee Amendment** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/2023a_sb083_h_pbh_001.pdf)
2. **Engrossed (03/07/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_083_eng.pdf)
3. **Final Act (04/19/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_083_enr.pdf)
4. **Introduced (01/27/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_083_01.pdf)
5. **PA1 (03/03/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_083_s_hhs_01.pdf)
6. **PA2 (03/23/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_083_h_pbh_01.pdf)
7. **Reengrossed (03/09/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_083_ren.pdf)
8. **Rerevised (03/27/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_083_rer.pdf)
9. **Revised (03/23/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_083_rev.pdf)
10. **Signed Act (04/26/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/2023a_083_signed.pdf)

## Votes

- CONCUR — **34–0** (pass) · upper
- BILL — **26–8** (pass) · upper
- REPASS — **26–8** (pass) · upper
- AMEND — **34–0** (pass) · upper
- BILL — **60–2** (pass) · lower

## Sponsors

- Cleave Simpson — primary (person)
- Dafna Michaelson Jenet — primary (person)
- Faith Winter — primary (person)
- Ty Winter — primary (person)

## Timeline

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

- **2023-04-26T06:00:00+00:00** Governor Signed `executive-signature`
- **2023-04-19T06:00:00+00:00** Sent to the Governor `executive-receipt`
- **2023-04-19T06:00:00+00:00** Signed by the Speaker of the House
- **2023-04-19T06:00:00+00:00** Signed by the President of the Senate
- **2023-04-03T06:00:00+00:00** Senate Considered House Amendments - Result was to Concur - Repass
- **2023-03-31T06:00:00+00:00** Senate Considered House Amendments - Result was to Laid Over Daily
- **2023-03-30T06:00:00+00:00** Senate Considered House Amendments - Result was to Laid Over Daily
- **2023-03-29T06:00:00+00:00** Senate Considered House Amendments - Result was to Laid Over Daily
- **2023-03-28T06:00:00+00:00** Senate Considered House Amendments - Result was to Laid Over Daily
- **2023-03-27T06:00:00+00:00** House Third Reading Passed - No Amendments `passage, reading-3`
- **2023-03-24T06:00:00+00:00** House Third Reading Laid Over Daily - No Amendments
- **2023-03-23T06:00:00+00:00** House Second Reading Special Order - Passed with Amendments - Committee
- **2023-03-22T06:00:00+00:00** House Committee on Public & Behavioral Health & Human Services Refer Amended to House Committee of the Whole `committee-passage, referral-committee`
- **2023-03-11T07:00:00+00:00** Introduced In House - Assigned to Public & Behavioral Health & Human Services `introduction`
- **2023-03-09T07:00:00+00:00** Senate Third Reading Passed with Amendments - Floor `passage, reading-3`
- **2023-03-08T07:00:00+00:00** Senate Third Reading Laid Over Daily - No Amendments
- **2023-03-07T07:00:00+00:00** Senate Second Reading Passed with Amendments - Committee, Floor `reading-2`
- **2023-03-02T07:00:00+00:00** Senate Committee on Health & Human Services Refer Amended to Senate Committee of the Whole `committee-passage, referral-committee`
- **2023-01-27T07:00:00+00:00** Introduced In Senate - Assigned to Health & Human Services `introduction`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/848fda71-343d-4d9f-b2e2-5ab452a0b0a6`. Confidence: reported (aggregated from official Colorado legislature records).