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Dr. Mark Sienko, MD

Dr. Mark Sienko, MD

Age 61 Medical Oncology M
(11) 11 reviews
Accepting New Patients


Dr. Mark Sienko, MD is a medical oncology specialist in Spokane, WA. He currently practices at Cancer Care Northwest and is affiliated with Multicare Deaconess Hospital. He accepts multiple insurance plans. Dr. Sienko is board certified in Internal Medicine.


  • Ut Swstn Med Ctr, Fellowship Hospital — 2005
  • Northwestern University, Undergraduate School — 1982

Insurance Accepted

  • Aetna
  • Anthem
  • Assurant Health
  • Blue Cross Blue Shield
  • Blue Cross of Idaho
  • CareFirst Blue Cross Blue Shield
  • Cigna
  • Commercial Insurance Company
  • First Choice Health
  • First Health (Coventry Health Care)
  • Government Employees Health Association (GEHA)
  • Group Health Cooperative (GHC)
  • HealthSmart
  • Humana
  • LifeWise
  • Medicaid
  • Molina Healthcare
  • Planned Administration Inc
  • Premera Blue Cross
  • Providence Health Plans
  • Regence Blue Cross Blue Shield
  • Regence Blue Shield of Washington
  • TriWest Champus
  • UnitedHealthCare

* Please verify this information when scheduling an appointment.


  1. Practice

    1. 1
      Cancer Care Northwest
      605 E Holland Ave Ste 100, Spokane, WA 99218 Existing Patients: (509) 228-1000
    2. 2
      Olympic Medical Cancer Center
      844 N 5th Ave, Sequim, WA 98382 Existing Patients: (360) 683-9895

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Very Good Dr Sienko is very knowledgeable and explains things in terms you can understand. I feel he is very concerned about my health
Sam Nicholas in Ione, WA — Dec 18, 2019
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Dr. Mark Sienko, MD
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Frequently Asked Questions

Dr. Sienko frequently treats Non-Hodgkin's Lymphoma, Neutropenia, and Lymphosarcoma.  

Find contact information here to make an appointment.

Hospital Affiliations

  • Multicare Deaconess Hospital
  • Multicare Valley Hospital
  • Providence Holy Family Hospital
  • Providence Sacred Heart Medical Center
  • Providence St. Joseph's Hospital