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What we do 

Optum, formerly NAMM California, develops and manages provider networks. We offer a full range of services to help physicians and other providers in their managed care and business operations.

For 25 years, we have been an innovator in health care. We have a track record for quality service and electronic capabilities, as well as financial stability.  

We are well positioned to continually invest in our infrastructure and systems. This benefits our clients and helps us prepare for changes related to health care reform. 


Our clients

Our clients represent a network of more than 600 primary care physicians and more than 2,000 specialists:

  • Optum Care Network–Citrus Valley
  • Optum Care Network–Corona
  • Optum Care Network–Inland Valley
  • Optum Care Network–Moreno Valley
  • Optum Care Network–Redlands 
  • Optum Care Network–Riverside
  • Optum Care Network–San Bernardino 
  • Optum Care Network–Southwestern Valleys 
  • Optum Care Network–Redlands
  • Optum Care Network–Desert Cities
  • Optum Care Network–North County SD 
  • Mercy Physicians Medical Group, Inc. 

A key affiliate in the California operations is PrimeCare Medical Network, Inc. (PMNI). PMNI has a limited California Knox-Keene license for Riverside, San Bernardino and San Diego counties.  

This lets PMNI accept both institutional and professional risk to enhance the coordinated care model. PMNI currently accepts global capitation for most of its senior plans and one of its commercial plans. 

As a Knox-Keene licensee, the Department of Managed Health Care subjects PMNI to strict regulations. This helps ensure that the company remains financially stable and complies with operational standards.

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