Office of the CMO

The medical directors at Partnership Health Plan of California (PHC) are responsible for rendering clinical judgment in the areas of medical necessity for utilization management, grievances and appeals, quality incentive programs, potential quality issues, and health plan policies and procedures. They are experienced primary care physicians, board certified in either pediatrics, internal medicine or family medicine. 

From the Desk of the CMO

Access newsletters and meeting information developed by Dr. Robert Moore and his team.  


PHC Primary Care Blog



Spring Regional Medical Directors Forum

Living with endemic Covid requires us to continue to find ways to safely meet with each other while in person. The dialogue, discussion, and relationship building that comes from meeting and interacting with each other is vital in sharing ideas, developing new partnerships, as well as to nurturing our emotional well-being and professional fulfillment.

The California Department of Public Health (CDPH) model predicts Covid infection rates in March and April 2022, will drop to levels we were seeing in the autumn of 2021.

Detailed Notes Clinician | Leaders

Events and Webinars

Stay up to date on the latest events and webinars offered by PHC.

Starting and Continuing Naltrexone for
Alcohol Use Disorder in the PCP setting
This will be a practical webinar on best practices in alcohol use disorder treatment. Discussion will include key steps to patient assessment and treatment, including Naltrexone and other evidence-based treatments, and an approach to alcohol withdrawal.

Optimizing the Configuration of the Electronic Health Record for Quality: 2021 Update

Pediatric Screening for Elevated Lead Levels - CME/CE Available! 

This a self-study webinar for 1.00 CME/CEU** credit available until 4/18/2022.  Watch the 50 minute video and complete online evaluation to receive credit.  Certificate will be issued by email at the end of the month.     

**Credit determination

CME - American Academy of Family Physicians' (AAFP) 

The AAFP has reviewed Pediatric Screening for Elevated Lead Levels and deemed it acceptable for up to 1.00 Enduring Materials, Self-Study AAFP Prescribed credit. Term of Approval is from 04/18/2021 to 04/18/2022. Physicians should claim only the credit commensurate with the extent of their participation in the activity. 

CE - Board of Registered Nursing  
Provider approved by the California Board of Registered Nursing, Provider Number CEP16728, for 1.00 contact hour(s).

Care Through Video: Key Skills for PCP Office Staff

Primary care clinicians who are willing and able to use video technology to deliver care will be more successful if the office builds the necessary and critical physical and personnel infrastructure. Managers of primary care practices that have increased the amount of care delivered over video have focused their energies on operational workflows and training of office staff to help build this capacity.

PHC is sponsoring an educational webinar targeted to support all staff members in order to help make video visits a success. ResolutionCare, a palliative care organization serving many rural PHC counties, has built its business on optimizing video visits to connect meaningfully with patients dealing with life-limiting illness. 

Medical Directors

The PHC medical directors are proud of their role in promoting access to high-quality health care for the Medi-Cal population in PHC's 14 counties. The medical directors are responsive to inquiries from our clinician network, pro-active in addressing quality and systems issues they encounter, and logical and rational in their approach to complex medical scenarios. 

Chief Medical Officer: 

Robert Moore, MD MPH MBA, Family Medicine

Regional Medical Directors: 

Northern Region (Del Norte, Humboldt, Lassen, Modoc, Shasta, Siskiyou, Trinity): Jeff Ribordy, MD MPH, Pediatrics

Southeast Region (Napa, Solano, Yolo): Colleen Townsend, MD, Family Medicine

Southwest Region (Lake, Marin, Mendocino,  Sonoma): Marshall Kubota, MD, Family Medicine

Associate Medical Director for Quality: 

Mark Netherda, MD, Family Medicine

Associate Medical Directors:

Aaron Thornton, MD, MBA, Internal Medicine

Bettina Spiller, MD, Family Medicine

Bradley Cox, DO, Family Medicine

David Katz, MD, Family Medicine 

James Cotter, MD MPH, Family Medicine 

Mark Glickstein, MD, Internal Medicine 

Teresa Frankovich, MD MPH, Pediatrics 


Access resources PHC medical directors find valuable for providers.

Perinatal Quarterly Newsletter

February 2021

September 2020

December 2020