Medicare Annual Enrollment: October 15 - December 7 Covered California Open Enrollment: November 1 - January 31View Enrollment Dates

WE SPECIALIZE IN MEDICARE COVERAGE SOLUTIONS

Personalized Support for Medicare Plans, Covered California, Prescription Coverage, Final Expense & More

Serving clients in California, Oregon, Nevada and Arizona, subject to licensing and plan availability.

What Is Medicare?

Medicare is a federal health insurance program created in 1965 under President Lyndon B. Johnson as part of the Social Security Act. It was designed to provide affordable healthcare coverage for Americans age 65 and older, many of whom previously had limited or no access to health insurance.


Over time, Medicare has expanded to also cover certain younger individuals with disabilities and those with End-Stage Renal Disease (ESRD) or ALS.


Today, Medicare plays a vital role in protecting the health and financial well-being of millions of Americans.

Why Medicare Matters

Medicare provides essential healthcare coverage that helps seniors and eligible individuals manage medical costs, access necessary care, and maintain a higher quality of life. With various plan options available, beneficiaries can choose coverage that best fits their healthcare needs and budget.


Out-of-pocket costs under Medicare Parts A and B can be substantial. To help protect your financial well-being, it is important to consider additional coverage—either a Medicare Supplement (Medigap) plan paired with a Prescription Drug Plan (Part D), or a Medicare Advantage plan, which may include prescription drug coverage.


Please contact us for more detailed information and personalized assistance.

Learn More About Medicare

SERVING CLIENTS IN CALIFORNIA, OREGON, NEVADA AND ARIZONA

Never a Fee for Our Services 


At Gaddis and Mast Insurance Services, we love what we do. We are committed to simplifying the often confusing maze of health insurance. We strive to make the process stress-free while ensuring that you feel confident about your choices. As licensed and experienced agents, we'll help you understand your options and choose the plan that's right for your healthcare needs and budget.


We work hard to earn your business, not just for the quick sale, but for the years to come.

Covered California SERVICES INCLUDE: 

  • Health Insurance through the Marketplace
  • Income-Based Coverage Options
  • Dental and Vision Plans
  • Prescription Drug Coverage
  • Maternity, Mental Health, and Emergency Care
  • Family and Individual Plans
Contact Us Today

For direct Covered California assistance, call Lisa at (707) 228-8357.

Why Work With Us?


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One-on-one support from licensed Medicare professionals

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No fees — our help is always free to you

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Clear, compassionate guidance — no confusion

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Continued support after enrollment

Let us help you find peace of mind with the coverage that fits your life.

Personal service for the years to come

Meet Larry and Lisa

As independent agents we each strive to ensure you get the guidance you need.

Larry D. Gaddis

Larry D. Gaddis

Larry began his insurance career in 1968 and brings more than five decades of experience in insurance, business, sales and management. He returned to insurance in 2009 as an independent broker, focusing on Medicare and retirement planning and serving as a trusted resource beyond the initial plan choice.

Lisa Grace Mast

Lisa Grace Mast

Lisa is a Licensed Insurance Agent who helps individuals and families understand Covered California, Medicare enrollment and related coverage choices. She brings a compassionate, patient-focused approach to each conversation.

Business HoursMonday - Friday: 9:00 AM - 5:00 PMWeekends and after-hours: By appointment
Helpful Resources

Guides and answers for important coverage decisions

Explore Medicare, Covered California and enrollment guidance, plus answers to common client questions.

Visit Resources

Frequently Asked Questions

Can I lower my Medicare Supplement premium if it keeps increasing?

It may be worth reviewing available Medicare Supplement options. Some states provide birthday-rule or other guaranteed-issue protections, but eligibility, timing and permitted changes vary by state. Depending on your needs and applicable enrollment rules, it may also be appropriate to review Medicare Advantage options.

Learn about Medicare Supplement options
What is AEP, or the Annual Enrollment Period I hear advertised?

Medicare Open Enrollment runs October 15 through December 7 each year. During this period, people can make certain changes to Medicare Advantage and Medicare drug coverage for the following year. Medicare Advantage plans are offered by Medicare-approved private companies; costs, benefits, networks and rules vary by plan and area.

Review enrollment guidance
I have Original Medicare and a Medicare Supplement. Can I see any doctor I want without permission from my primary doctor?

With Original Medicare, you can generally see any Medicare-enrolled provider that accepts Medicare patients, and in most cases you do not need a referral for a specialist. A Medicare Supplement policy may help with certain out-of-pocket costs.

Learn about Original Medicare
Does Medicare cover dental work?

Original Medicare does not cover most routine dental care. It may cover limited dental services when they are required due to certain medical conditions. Separate dental coverage may be available; waiting periods and major-work benefits depend on the plan.

Explore dental and vision coverage

LET’S GET STARTED

Ready to find a Medicare plan that works for you?

Contact Us Today or Schedule an Appointment

Covered California

Need Help With Covered California?

Lisa Mast can help you understand Covered California plan options, compare costs and benefits, review provider networks and prescriptions, and understand the information requested during enrollment.

Open Enrollment: November 1 - January 31

Get Covered California Help
☎ Call Larry✓ Plan Review