Yes, you'll still need insurance, though you may be able to reduce the amount you pay.
Your DPC membership is not an insurance plan; you'll still need insurance if you have a major health problem. (But when those problems arise, your DPC doctor will be next to you to guide you through the system and coordinate your care.) That said, you may be able to save money on your insurance! Since all routine care is covered by your membership, you can switch to a "high-deductible" health plan that costs less per month.
Recently, some alternatives to traditional insurance companies have been gaining in popularity. You may actually be able to save money by joining a healthcare cost-sharing community. To learn more about how these communities go hand-in-hand with DPC, check out this article by Sedera Health.
What is direct primary care (DPC)?
What are the benefits of a direct primary care membership?
How much does direct primary care cost?
Can direct primary care save you money?
Why is direct primary care a monthly membership?
Is direct primary care the same as concierge medicine?
Do I still need insurance as a direct primary care patient?
Should I join a direct primary care practice if I'm healthy?