About CoreMark Insurance Services, Inc

Based in Sacramento, California, CoreMark is a mid-sized insurance agency dedicated to delivering exceptional and proactive expertise to all our valued clients, no matter their size. We understand the everyday risk-management challenges today’s business owners face, and we are committed to doing whatever it takes to successfully solve issues before they turn into problems.

Companies Represented

CoreMark Insurance Services, Inc Agents

Insurance Products Offered

  • Business Auto Insurance
  • Car Insurance
  • Commercial Insurance
  • Cyber Liability
  • Employee Benefits
  • General Liability
  • Health Insurance
  • Workers Compensation


  • Frank G. 4 months ago

    So in the beginning of august I asked my agent to remove an old vehicle from my policy and add a new one via email. No response. Decided to give them a call. No answer. No call back. 2 weeks later they finally responded and started to ask questions about the new vehicle only to not respond to my response for another 2/3 weeks. I was calling every day emails were being sent every day and they wouldn’t respond. I decided I was done with coremark so I searched for different insurance companies and found one I liked. So I emailed my agent on 09/14/2020 telling them I was canceling my current policy and moving to another. I also called and you guessed it no answer so I left a message. (Still to this day I have not received a response from this person.) Late October I received a bill from my old insurance saying I owe them for October. I told them no I canceled it in the middle of September. They were not aware that I canceled. So the person I was working with at coremark didn’t cancel my policy. So now I’ve been back and forth with my old insurance since the beginning of November to now. Thanks COREMARK. I will never recommend you guys to anyone.

  • K G. 8 months ago

    So friendly and helpful!

  • A K. over 1 year ago

    Good service and quick response

  • Joe J. almost 2 years ago

  • Jeff L. over 3 years ago

    We have been working with Cerrina Jensen for our firm's benefits and the service and knowledge has been outstanding. I also refer all my clients to her for their insurance needs and they have all been served extremely well.

  • Micah G. over 3 years ago

    I have worked with Cerrina Jensen and she is great at her job! She has helped my business with insurance and workers comp policy. She is a professional who cares about her clients and has been a great resource to me and my employees. I am glad we have Cerrina on our side and I highly recommend her and Coremark.

  • Amy H. about 4 years ago

    We started using Core Mark about an year ago. The service we have received from Cerrina and her team has been amazing. Any time I have had any questions she has been able to help me in a very timely manner. Our employees also have access to her and she is quick to give them help and assistance. I would highly recommend Cerrina if you are looking for great service and assistance with your group health coverage needs. We just finished our Open Enrollment process and it was very simple. We never heard from our previous agent after we signed the contract. We were contacted several times thru the year just to check and see if we had any questions about our benefits. When we had new employees to add they took care of everything! Amazing what a good agent can do.

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Agency's Business Hours

  • Monday 8:00 AM – 5:00 PM
  • Tuesday 8:00 AM – 5:00 PM
  • Wednesday 8:00 AM – 5:00 PM
  • Thursday 8:00 AM – 5:00 PM
  • Friday 8:00 AM – 5:00 PM
  • Saturday Closed
  • Sunday Closed
  • Mon 8:00 AM – 5:00 PM
  • Tue 8:00 AM – 5:00 PM
  • Wed 8:00 AM – 5:00 PM
  • Thu 8:00 AM – 5:00 PM
  • Fri 8:00 AM – 5:00 PM
  • Sat Closed
  • Sun Closed

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