S. 3350Senate119th Congress (2025-2027)In Committee

ACO Assignment Improvement Act of 2025

Introduced December 4, 2025

AI-Generated Summary

Updated December 30, 2025 at 5:42 AM UTC

The ACO Assignment Improvement Act of 2025 changes the Medicare Shared Savings Program by allowing the assignment of beneficiaries to Accountable Care Organizations (ACOs) to consider primary care services delivered by nurse practitioners, physician assistants, and clinical nurse specialists. This amendment applies to performance years starting on or after January 1, 2026, and affects Medicare beneficiaries and the ACOs that serve them.

Key Provisions

  • Adds a new subparagraph (C) to the assignment rules, specifying that primary care services provided by qualified nurse practitioners, physician assistants, and clinical nurse specialists count toward beneficiary assignment to ACOs.
  • Updates the wording of existing subparagraphs (A) and (B) with minor punctuation changes.

Legislative Activity

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2 earlier actions
SenateIntro Referral Latest Action

Read twice and referred to the Committee on Finance. (text: CR S8512)

December 4, 2025

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SenateIntro Referral

Introduced in Senate

December 4, 2025

SenateIntro Referral

December 4, 2025

SenateIntro Referral

Read twice and referred to the Committee on Finance. (text: CR S8512)

December 4, 2025

Floor Debate

5 members

What members said about S. 3350 on the floor

2 Republicans3 Democrats
Susan M. Collins
Sen. Susan M. CollinsR-ME · Dec 4, 2025

Mr. President, I rise today to introduce the Relief for Farmers Hit with PFAS Act. I thank my colleagues Senator King and Senator Shaheen for joining me in introducing this important legislation for…

Jack Reed
Sen. Jack ReedD-RI · Dec 4, 2025

Mr. President, literacy opens the door for lifelong opportunity and economic success. Yet, the long-term trend in the National Assessment of Educational Progress, NAEP, shows continued declines in…

Alex Padilla
Sen. Alex PadillaD-CA · Dec 4, 2025

Mr. President, I rise to introduce the bipartisan Protect Innocent Victims of Taxation After Fire Extension Act. This legislation would extend and make permanent the tax relief that Congress has…

Richard J. Durbin
Sen. Richard J. DurbinD-IL · Dec 4, 2025

Mr. President, I ask unanimous consent that the text of the bill be printed in the Record.

John Barrasso
Sen. John BarrassoR-WY · Dec 4, 2025

Mr. President, I ask unanimous consent that the text of the bill be printed in the Record.

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John Barrasso
Sen. John BarrassoR-WY · Dec 4, 2025

Mr. President, I ask unanimous consent that the text of the bill be printed in the Record.

Bill Text

Latest available legislative text

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Introduced in SenateIssued December 4, 2025

II

119th CONGRESS

1st Session

S. 3350

IN THE SENATE OF THE UNITED STATES

December 4, 2025

Mr. Barrasso (for himself and Mr. Whitehouse) introduced the following bill; which was read twice and referred to the Committee on Finance

A BILL

To amend title XVIII of the Social Security Act to improve the way beneficiaries are assigned under the Medicare shared savings program by also basing such assignment on primary care services furnished by nurse practitioners, physician assistants, and clinical nurse specialists.

1.

Short title

This Act may be cited as the ACO Assignment Improvement Act of 2025.

2.

Improvements to the assignment of beneficiaries under the Medicare shared savings program

Section 1899(c)(1) of the Social Security Act (42 U.S.C. 1395jjj(c)(1)) is amended—

(1)

in subparagraph (A), by striking and at the end;

(2)

in subparagraph (B), by striking the period at the end and inserting ; and; and

(3)

by adding at the end the following new subparagraph:

(C)

in the case of performance years beginning on or after January 1, 2026, primary care services provided under this title by an ACO professional described in subsection (h)(1)(B).

.