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Supplemental Insurance Agents in Castro Valley, CA

Browse supplemental insurance agents serving Castro Valley, California. Contact information and addresses listed below.

2 agents listed
Updated May 2026
Castro Valley, CA
Important: Listings are compiled from publicly available sources and have not been independently verified by BeforeInsuranceUSA.com. We do not endorse any agent or guarantee outcomes. Verify licensing and disciplinary status with the Department of Insurance of California before hiring.
Showing 2 supplemental insurance agents in Castro Valley, CA Listings are displayed in no particular order and are not ranked by BeforeInsuranceUSA. Order does not constitute a recommendation or endorsement of any agent.
Rod Villamor - State Farm Insurance Agent
3325 Castro Valley Blvd, Castro Valley, CA 94546
(510) 957-5110 agentrod.com
Ron Cain - Bay Area Medicare Broker
20885 Redwood Rd Ste 138, Castro Valley, CA 94546
(510) 813-6999 bayareamedicarebroker.com

Supplemental insurance agents in Castro Valley, California assist residents with Medicare Supplement plans, also called Medigap, and other gap coverage. California law provides a six-month Medigap open enrollment period starting when you are 65 and enrolled in Medicare Part B. During this time you can buy any Medigap policy without medical underwriting. Local agents can explain plan options and help you compare costs.

What Does a Supplemental Insurance Agent in Castro Valley Cost?

Supplemental insurance costs in California vary by plan type, age, location, and insurer. For a Medigap Plan G, monthly premiums in Castro Valley typically range from $120 to $250 for a 65-year-old. Plan N may cost between $90 and $180 per month. Dental and vision supplemental plans often add $30 to $80 per month. Costs can change each year and depend on your health status for plans that require underwriting. This is general information, not insurance advice.

* Cost estimates are general ranges based on publicly available data and compiled using automated research tools. Actual fees vary by agent and case complexity. This is not insurance advice — consult directly with an agent for fee specifics.

Frequently Asked Questions

What is a supplemental insurance agent in Castro Valley?
A supplemental insurance agent is a licensed professional who helps you buy policies that cover gaps in your primary health insurance. In Castro Valley, these agents often specialize in Medicare Supplement plans, dental, vision, and accident insurance.
When can I buy a Medigap policy in California?
California law gives you a six-month Medigap open enrollment period that starts the month you are 65 and enrolled in Medicare Part B. During this time you have guaranteed issue rights, meaning insurers cannot deny you coverage or charge higher premiums due to health conditions.
Do I need a supplemental insurance agent if I have Medicare?
You do not need an agent, but an agent can help you compare plans from different carriers. They can explain the differences between Medicare Advantage and Medigap. Many agents in Castro Valley offer free consultations.