2026 Medicare Advantage Plans in Multnomah County, OR

CMS quality ratings for Medicare Advantage plans in Multnomah County, OR (2026) are summarized below.

Medicare Advantage Plan Ratings in Multnomah County, OR (2026)

Rating Category	Number of Plans	Percent of Plans
5 Stars	No 5-star plans available.	0%
4 Stars (includes 5 Stars)	15	35%
3 Stars	26	60%
Below 3 Stars	2	5%
Not Rated	0	0%
Average Rating	3.5

* CMS assigns Medicare Advantage star ratings annually based on plan quality and performance measures.

• CMS.gov, Medicare Advantage & Special Needs Plan Landscape Source Files — Version: 202608
• CMS.gov, Medicare Part C & D Performance Data — Version: 2026
• CMS.gov, Medicare Advantage & Part D Contract and Enrollment Data — Version: 2026-08

All plan counts, enrollment totals, averages, and percentage distributions are calculated at the county level using CMS data and include standard Medicare Advantage (MA/MAPD) plans only, based on a consistent aggregation methodology.

Data sources and methodology documentation .

• Medicare.gov, "Understanding Medicare Advantage Plans" — Last accessed 25 May, 2025
• Medicare.gov, "Compare Original Medicare & Medicare Advantage" — Last accessed 25 May, 2025
• NCOA.org, "5 Steps to Choosing the Right Medicare Plan for You" — Last accessed 25 May, 2025

MedicarePlans.com is an independent informational resource and has no affiliation with, or endorsement from, the U.S. Government or the federal Medicare program.

Data provenance is documented in accordance with the U.S. Core Data for Interoperability (USCDI) Provenance standard .

Page content independently curated and maintained by David W. Bynon, Editorial Steward, using a standardized, data-driven methodology for accurate, non-commercial Medicare plan interpretation and resolution.