Our History

Since 1938, McDermottCosta has been serving individuals and businesses throughout California and the nation with high quality insurance solutions and we are dedicated to providing you with unparalleled policies and services.

McDermottCosta provides a wide range of insurance services in California and the nation, including business, personal, risk management, bonds and employee benefits.

Our Location

McDermottCosta Insurance is located in San Leandro, California, but our dedicated risk management consultants can help you select the ideal insurance in California and the rest of the 50 states throughout the nation, including Alaska and Hawaii

Address: 1045 MacArthur Blvd, San Leandro, CA 94577
Phone: 510-351-7460
Hours: M-F 8:30 AM – 5:00 PM

Who We Serve

Whether you’re a homeowner in need of a comprehensive home insurance policy or have a commercial boating business that requires responsive ocean marine insurance, our wide array of policy options offer you the protection you require.

Our experienced insurance specialists can pair you with a range of coverage options from car insurance to personal umbrella insurance.

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Our Staff

Our experienced insurance specialists can provide you with a wide range of coverage options, from business and professional needs, to home and auto insurance, to employee benefits, to fit your lifestyle and business model.
John Johnson

John Johnson

President & CEO


John joined the agency as a Commercial Producer in 1985, when McDermott Costa acquired Matchless Agency. He became Vice-President of Sales in 1992, and later, President, in 1996. Prior to joining McDermott Costa, he served in various capacities at Transamerica Insurance, Vanguard Insurance, and the Workers’ Compensation Insurance Rating Bureau.

Mike McDermott

Mike McDermott

Vice President


Mike is a third generation McDermott, with 23+ years of experience in the Commercial Lines Insurance brokerage industry. He specializes in food related industries, including QSR Restaurants, Food Processors, and Manufacturers. Mike handles national workers’ compensation accounts, and works closely with large complex accounts, including Alternative Risk Financing through Group Captive Programs.

Rich Suess

Rich Suess

Vice President, Employee Benefits


Rich has 40 years of experience, specializing in Employee Benefits, Group Medical, Dental, Life, Vision & LTD. Originally from Saddle Brook, New Jersey, Rich currently lives with his wife of 38 years, Yolanda, in the San Jose area. They have 2 sons, Ricky and Cory, and 3 grandchildren, Kennedy, Kayden, and Colt. Outside of work, he loves playing the guitar and spending time with his family.

Ashani Dass

Ashani Dass



Ashani has been with McDermott Costa for over 20 years. She joined McDermott Costa as a Clerical Assistant, then moved her way to Accounting Assistant, and later accepted the Controller position, in 2006. She is past President of Bay Fair Toastmasters and now holds the Treasurer position. When she is not at work, she enjoys raising her son with her husband.

Gina Diego

Gina Diego

Commercial Lines, Manager & Producer


Gina joined McDermott Costa in 1985 as a clerical assistant. She has grown within the agency and has worked all departments within the office. She became the Commercial Lines Manager in 2005. She writes all lines of insurance, but her specialty is Daycare, Private School and Non-Profits. Outside of work she enjoys spending time with her 6 grandbabies and her 2 Chihuahuas, Bruiser and Buddy.

Judi Martin

Judi Martin

Personal Lines, Manager


Judi has been in the insurance industry for over 13 years, and specializes in auto, home and umbrella insurance. She joined the agency as a Personal Lines Assistant in 2007. In 2012, she received her CISR designation. She later became Personal Lines Manager, in 2017. Outside of work she enjoys spending time with her son and family.

Our Insurance Companies

We are an independent insurance agency, representing top rated carriers, which allows us to help you build a California insurance package that caters to your unique specifications.

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