New Medicare Health Insurance Companies for 2026 in California

The Medicare landscape in California is constantly changing. Every October, Medicare Advantage (Part C) plans and Part D Prescription Drug plans are released for the upcoming year.

In California for 2026 there are 23 private health insurance companies which offer Medicare Advantage plans. 2 of these companies are new to the California Medicare marketplace for 2026.

There are 6 private health insurance companies in California which offer Medicare Part D Prescription Drug plans. All of these insurance companies are returning to the California Part D market for 2026 and there are no new insurance companies offering plans.

Below is a summary of new and returning health insurance companies offering Medicare Advantage Plans (Part C) and Medicare Prescription Drug Plans (Part D) in California.

More About Private Health Insurance Companies Offering Medicare Plans

The Federal and State governments allow private health insurance companies to offer Medicare Advantage and Prescription Drug plans. Medicare Advantage plans combine Original Medicare Part A and Part B into a single plan which typically include other benefits such as dental, vision, hearing, prescription drugs, and more. Standalone Part D Prescription Drug plans are also offered and can be combined with Original Medicare, Supplement plans, or Medicare Advantage plans which do not include Part D benefits.

More About Our Analysis

Information shown regarding health insurance companies in California's Medicare marketplace is based on our evaluation of HIOS plan ID and issuer ID data available from medicare.gov. An insurance company is considered new to the market if their issuer ID is new and was not present the previous year. Insurance companies returning to the market are shown if their issuer ID was present last year and is also present this year.