I answered this question a while ago so maybe you can search for it. They’re all the exact same coverage but your network will either be focused on one of the clinics or a little bigger like with the MCO plans (for example the Tufts Heath Together that’s not partnered with a specific clinic). Pick a clinic or hospital network and choose based on that. If you’re new, you’ll want a clinic like MGB, Mt Auburn or Atrius that can assign you a PCP and easily refer you for whatever specialists or labs you need, usually on site. Once you have a PCP in the building, you can usually get in for primary care the same/next day or a specialist in 2-3 weeks. If you don’t, it could take weeks or months for an opening. Don’t wait until you need to be seen to establish yourself as a patient. Choose a clinic by location, online reviews and the wait time for appointments. Stay away from CHA.