The 2021 Open Enrollment Period has Begun: Commercial Insurance Open Enrollment ends Sunday, January 31, 2021. Open Enrollment is a great time to find an expert Primary Care Provider (PCP). To learn more about MarinHealth Medical Network PCPs, or for help with a referral to the right provider, call: 1-888-MARINHC (1-888-627-4642). The following profiles are provided for informational purposes only, and details are subject to change. Please contact the provider’s office with any questions, including to verify whether your insurance is accepted.