Medicare Supplement Plan

​​When you retire and your Medical Plan benefits end, the Medicare Supplement Plan (available to eligible members on a self-paid basis) compliments Original Medicare (Parts A and B) benefits and provides Part D (prescription drug coverage).

The Medicare Supplement Plan also includes a vision eye exam and vision eyewear benefits, along with emotional well-being support and life-balance resources through the Employee Assistance Plan.

Detailed below is information on the Medicare Supplement Plan for 2023. Effective January 1, 2024, the Humana Group Medicare Advantage PPO plan for retired members will replace the Medicare Supplement Plan. Read more​ about the new plan.​

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As its name implies, the Medicare Supplement Plan supplements, or adds to, Original Medicare (Parts A and B). Medicare pays its portion of covered services first, and Medicare Supplement offers secondary coverage. Medicare Supplement also includes a wide range of medically necessary services and supplies beyond Medicare Parts A and B and provides Medicare Part D and prescription drugs coverage.

Generally, Medicare Supplement covers the following:

  • prolonged hospitalization, skilled nursing facility care, and inpatient and outpatient psychiatric treatment
  • medical supplies and services
  • ambulance services
  • Medicare Parts A and B deductibles
  • outpatient prescription drugs
  • medically necessary medical care when traveling outside the United States


As a retiring member of the Benefits Plan, you may enroll in Medicare Supplement if you

  • are Medicare-eligible (generally, age 65 or older);
  • meet the Rule of 70*;
  • are enrolled in Medicare Parts A and B; and
  • have been covered continuously by a qualified health plan until eligible for Medicare Supplement.

These family members also may enroll in Medicare Supplement, regardless of whether you choose to enroll when you are eligible:

  • your spouse or eligible child who has maintained continuous coverage and is enrolled in Medicare Parts A and B
  • your surviving or former spouse who has maintained continuous coverage and is enrolled in Medicare Parts A and B

*To meet the Rule of 70, you must be age 55 or older when you terminate service to the Presbyterian Church (U.S.A.) and have at least five years of Medical Plan participation. Additionally, the sum of your age and years of Medical Plan participation at termination must equal 70 or more.


You pay a subscription rate, or premium, set annually by the Board of Directors of the Board of Pensions. The rate charged is lower than the actual cost to cover you, because the Medicare Supplement Plan is partially subsidized by the federal government and the pharmaceutical industry (for the prescription drug portion of the plan) and by Presbyterian Church (U.S.A.) churches through post-retirement dues.

​Medicare Supplement costs ​ ​ ​
​Monthly cost of coverage
​Member and Medicare-eligible Spouse ​$680
​Annual deductibles
​Annual deductible per individual (medical) ​$325
Annual deductible per individual (prescription) ​$0
​Annual maximums
​Medical out-of-pocket limit (includes deductible) ​$2,590
​Prescription out-of-pocket limit per individual