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Compare Supplemental Insurance Agents in Brentwood, CA

Compare supplemental insurance agents in Brentwood. Review contact information and insurance categorys before you decide.

20 agents listed
Updated May 2026
Brentwood, 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 Brentwood, 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.
Julio Martinez - State Farm Insurance Agent
2200 Sand Creek Rd ste d, Brentwood, CA 94513
(925) 432-2129 agentjulio.com
Ross Lopez - State Farm Insurance Agent
71 K, Sand Creek Rd, Brentwood, CA 94513
(925) 634-0330 brentwoodinsuranceagent.com
Farmers Insurance - Raul Diaz
9030 Brentwood Blvd STE H, Brentwood, CA 94513
(925) 679-2300 agents.farmers.com
Jose Martinez - State Farm Insurance Agent
2200 Sand Creek Rd Ste D, Brentwood, CA 94513
(925) 634-2333 josemartinez.us
Terry Nguyen - State Farm Insurance Agent
1120 2nd St #107, Brentwood, CA 94513
(925) 513-1200 agentterry.com
Zeigler Insurance
1300 Central Blvd Ste B, Brentwood, CA 94513
(925) 634-1240 zeiglerinsurance.com
Mark Murray - State Farm Insurance Agent
4431 Balfour Rd C, Brentwood, CA 94513
(925) 392-3228 gotmark.org
Stephanie Loureiro: Allstate Insurance
613 1st St Ste 203, Brentwood, CA 94513
(925) 634-1234 agents.allstate.com
Circadian Insurance Brokers
8440 Brentwood Blvd suite h, Brentwood, CA 94513
(925) 417-8500 circadianbrokers.com
Farmers Insurance - EJ Paje
191 Sand Creek Rd Suite 202B, Brentwood, CA 94513
(650) 897-5540 agents.farmers.com
Beeson's Boutique Insurance Agency: Allstate Insurance
380 W Country Club Dr suite c, Brentwood, CA 94513
(925) 838-5400 agents.allstate.com
Jack Stone Insurance Agency Inc
144 Continente Ave #210, Brentwood, CA 94513
(925) 392-8365 jackstoneinsurance.com
Sandy Shane - State Farm Insurance Agent
160 B Guthrie Ln Ste 14, Brentwood, CA 94513
(925) 462-4030 sandytheagent.com
Edward Dutra Insurance
8425 Brentwood Blvd b6, Brentwood, CA 94513
(925) 634-1194 edwarddutrainsurance.com
Brooks Commercial Insurance Services
50 Sand Creek Rd Suite #306, Brentwood, CA 94513
(925) 418-4643 brookscis.com
AdvoCare Insurance Services
3291 Walnut Blvd Ste 170, Brentwood, CA 94513
(925) 513-7778
Rich McDaniel - Mutual of Omaha Advisor
1181 Central Blvd Ste D, Brentwood, CA 94513
(925) 626-7334 agents.mutualofomaha.com
Cypress insurance
8340 Brentwood Blvd, Brentwood, CA 94513
(408) 377-5900 cypressins.com
Cosgrove Insurance Agency
1210 Central Blvd ste 108, Brentwood, CA 94513
(925) 308-4180 dcosgroveinsurance.com
Essential Exchange Insurance Services
1145 2nd St A-269, Brentwood, CA 94513
(925) 984-5400 cathylittleinsurance.com

What Does a Supplemental Insurance Agent in Brentwood Cost?

Supplemental insurance agent services in California are typically commission-based, meaning you do not pay a separate fee for their help. Medigap plan premiums vary widely by carrier and plan type, ranging from about 100 to 400 dollars per month for a 65-year-old in Brentwood. Costs depend on your age, gender, location, and the specific plan benefits. 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 Brentwood?
A supplemental insurance agent in Brentwood is a licensed professional who helps you find and enroll in Medicare Supplement plans or other gap coverage. They work with multiple carriers to compare plans and costs for your situation.
When can I enroll in a Medigap plan in California?
In California, you have a six-month Medigap open enrollment period starting the month you turn 65 and enroll in Medicare Part B. During this time you cannot be denied coverage based on health conditions. Outside this window you may face medical underwriting.