Understanding Medicare Special Needs Plans in Greene County, Missouri

Medicare Special Needs Plans have with strict enrollment windows. By knowing when and how to sign up, you’ll avoid missed deadlines and keep your healthcare coverage aligned with your needs.

Understanding Enrollment Windows

• Initial Enrollment Period (IEP): Beginning three months before you turn 65 and lasting until three months after, this is the initial chance to join Medicare. You may also select a Medicare Advantage plan if it fits your needs. Learn more
• Medicare Advantage Open Enrollment Period (MA OEP): Between January 1 and March 31, people already enrolled in Medicare Advantage can make a one-time change—switch to another plan or return to Original Medicare. Learn more
• Annual Enrollment Period (AEP): From October 15 through December 7 each year, you can make changes to your Medicare coverage for the following year. Learn more
• Special Enrollment Periods (SEPs): Life events like moving to a new service area, losing other health coverage, or becoming eligible for assistance may open a Special Enrollment Period to adjust your Medicare coverage. Learn more

Ways to Enroll in Medicare Advantage Special Needs Plans

1. Consult a Licensed Agent: Call a licensed insurance agent at 1-833-748-3201 (TTY 711), available Mon-Fri 8AM-10PM, Sat 9AM-8PM EST, for help reviewing your Medicare options.
2. Contact the Plan Provider Directly: Start enrollment by reaching out to the plan provider through their website or by phone with their member services team.
3. Use Medicare.gov: At Medicare.gov, you can compare Medicare Advantage plans side by side and enroll securely online.

• CMS.gov, Landscape Source Files — Version: CY2027 Landscape (202609.1)
• CMS.gov, Medicare Part C & D Performance — Version: 2027 Star Ratings Data Tables
• CMS.gov, Plan Benefits Package — Version: PBP Benefits-2027
• CMS.gov, Medicare Advantage/Part D Contract and Enrollment Data — Version: 2026-09

Some facts and percentages shown on this page (such as average premiums, distribution of plan types, and percentage of $0 premium plans) are calculated by Medicare.org using data from the CMS Plan Benefits Package (PBP) files and Part C & D Performance files. All underlying values originate from CMS, and calculations are refreshed whenever CMS issues updated data.

To explore how 2027 Medicare SNP plans available in Greene County compare with plans offered elsewhere, you can search the Special Needs Plan directory to review options nationwide using the same authoritative data sources.

Medicare.org separates Medicare Advantage (MA/MAPD) plans and Special Needs Plans (SNPs) into different pages for clarity. As a result, plan counts, percentages, and other calculations shown here may differ from the aggregate totals published in the CMS Landscape files. All plan availability and benefit details originate from CMS.

Learn more about how we use CMS data.

• CMS.gov, "Medicare Advantage Plan Fact Sheet" — Last accessed 25 May, 2025
• Medicare.gov, "Your coverage options" — Last accessed 23 May, 2025
• Medicare.gov, "Joining a plan" — Last accessed 21 May, 2025

Medicare.org is owned and operated by Health Network Group, LLC, an Allstate company. Medicare.org provides information only and is not connected with or endorsed by the U.S. Government or the federal Medicare program.

Data provenance documentation is maintained in alignment 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 Medicare coverage interpretation and resolution.