The Central Oregon IPA (COIPA) is staffed and managed by executives and support professionals based in Bend, Oregon. Our collective expertise in healthcare management, the practice of medicine, clinical quality improvement, population health analytics, and clinical informatics are focused on providing three main types of services for our members: 

COIPA Administration

  • Kim Bangerter, MBA

    Chief Executive Officer

  • Divya Sharma, MD, MS, FACP

    Chief Medical Officer


  • Autumn Wilson

    Project Coordinator

  • James McCormack PhD, MT (ASCP)

    Director of Clinical Informatics

  • Angela Sanford

    Accounting & Operations Manager

  • Open Position

    Director of Clinical Quality

  • Ashley Zeigler

    Director of Network Performance

  • Teresa Chamberlain

    Provider Credentialing Manager

  • Alison Johnson

    Credentialing Specialist

  • Chanda Driscoll, LCSW

    Behavioral Health Clinician

  • Taouea Vitousek, LCSW

    Behavioral Health Clinician

  • Caroline Schuler

    Office Assistant

COIPA Board of Directors

COIPA Administration and Staff are guided by a Board of Directors representing physician and associate members from across our service area in Central Oregon and the Columbia Gorge. Board members are elected for a three-year term and may serve for a maximum of six years. In addition to monthly board meetings open to members, COIPA receives recommendations and direction from four standing committees:

  • Executive Committee

  • Managed Care Contracting Committee

  • Credentialing Committee

  • Quality, Values, and Outcomes Committee (QVOC)

Board Leadership

  • John Peoples, MD

    Board President

  • Michael Widmer, MD


  • Janelle Strom, MD

    Secretary - Treasurer

Board Members

  • Pam Bauer, CPA

  • Logan Clausen, MD

  • Open Director Seat

  • David Holt III, MD

  • Russell Massine, MD, FACP

  • Holly Pfeiffer, ASA, FCA, MAAA

  • Gary Plant, MD

  • Trey Rigert, MD

  • Paula Shultz, MD

  • Matthew Sperry, MD

  • Kristin Stratton, MD

  • James Weeks, MD


Phone: 541.585.2590

Fax:     541.585.2591

Central Oregon Independent

Practice Association (COIPA)

1230 NE 3rd St. Suite A-200

Bend Oregon



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