Der Medicus
Since its inception in 1996, the John Muir Physician Network has become one of the largest physician networks in Northern California, with more than 900 primary care and specialty physicians. Physicians associated with the Physician Network belong to either John Muir Medical Group (JMMG) or Muir Medical Group IPA, Inc. The Physician Network owns and operates primary care practices staffed by JMMG physicians in 23 locations from Brentwood to Pleasanton.