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Compare Supplemental Insurance Agents in San Mateo, CA

Directory of supplemental insurance agents in San Mateo, California. Verify credentials with the state department of insurance before hiring.

20 agents listed
Updated May 2026
San Mateo, 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 20 supplemental insurance agents in San Mateo, 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.
Marilyn Wong - State Farm Insurance Agent
748 Polhemus Rd, San Mateo, CA 94402
(650) 286-8100 marilynwong.com
Jim Breen - State Farm Insurance Agent
1900 S Norfolk St # 216, San Mateo, CA 94403
(650) 349-7800 jimbreeninsurance.com
Catalli Insurance Brokers
60 41st Ave, San Mateo, CA 94403
(650) 349-1803 catalli.com
Jerry Selvitella - State Farm Insurance Agent
117 N San Mateo Dr #3, San Mateo, CA 94401
(650) 343-5976 selvitella.com
Carlos Acosta - State Farm Insurance Agent
1611 Borel Pl Ste 7-A, San Mateo, CA 94402
(650) 598-0394 carlosacosta.net
EWD Insurance Services Inc
414 E 3rd Ave, San Mateo, CA 94401
(650) 342-1801 ewdins.com
Brian Takemoto - State Farm Insurance Agent
1515 S El Camino Real #220, San Mateo, CA 94402
(650) 340-6955 briantakemoto.com
Advanced Estate & Insurance Services, Inc. (AEIS Inc.)
306 6th Ave B, San Mateo, CA 94401
(650) 348-6234 aeisadvisors.com
Newfront
777 Mariners Island Blvd STE 250, San Mateo, CA 94404
(650) 488-8565 newfront.com
Tammie Pereira Insurance
1606 S El Camino Real, San Mateo, CA 94402
(650) 655-2022 tammiepereira.com
Mark Woods - BPIA Insurance
1519 S B St, San Mateo, CA 94402
(650) 539-6517 bpia.net
James K Mason Insurance Services LLC
300 San Mateo Dr # 1, San Mateo, CA 94401
(650) 401-6040 jkmasonins.com
Freeway Insurance
2095 Palm Ave, San Mateo, CA 94403
(650) 683-7049 locations.freeway.com
Jessica Liu Insurance Services
2332 S El Camino Real, San Mateo, CA 94403
(415) 386-2283 jlis.com
ABC Insurance Services, Inc.
3401 Pacific Blvd, San Mateo, CA 94403
(650) 357-9077 abcinsuranceus.com
Andreini & Co
220 W 20th Ave, San Mateo, CA 94403
(650) 573-1111 andreini.com
JMP Insurance Services LLC - The Panos Agency
851 N San Mateo Dr ste e, San Mateo, CA 94401
(650) 757-1600 jmpinsuranceservices.com
Heffernan Insurance Brokers
1820 Gateway Dr #260, San Mateo, CA 94404
(650) 842-5200 heffins.com
TWFG Insurance Services - Noel Sanchez
14 41st Ave, San Mateo, CA 94403
(650) 286-2901 twfgbayarea.com
Connell & Associates Insurance Brokers
155 Bovet Rd #476, San Mateo, CA 94402
(650) 571-8771 connell-ins.com

Supplemental insurance agents in San Mateo help residents find Medigap and other gap coverage policies. California law provides a guaranteed issue right for Medigap plans during the initial enrollment period and in certain other situations. These agents can explain how local health costs affect your coverage choices.

What Does a Supplemental Insurance Agent in San Mateo Cost?

Supplemental insurance agent services in California are typically free to you because the agent is paid by the insurance company. Medigap Plan G premiums in San Mateo range from about 120 to 250 dollars per month for a 65 year old. Plan N premiums are usually 30 to 50 dollars less per month. Costs vary by age health status and the specific carrier. 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 San Mateo?
A supplemental insurance agent helps you find policies that cover gaps in your primary health insurance. In California these agents are licensed by the state and must follow rules about plan comparisons and disclosures.
When can I enroll in a Medigap plan in California?
You have 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. California also has a birthday rule allowing you to switch to a similar plan within 60 days of your birthday.
How do I choose a supplemental insurance agent in San Mateo?
Look for an agent licensed by the California Department of Insurance who represents multiple carriers. Ask about their experience with Medicare supplement plans and local San Mateo hospitals. Check their record on the California insurance commissioner website.