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About Dr. Peter K Sien

Dr. Peter K Sien, MD is a Doctor primarily located in Kennewick, WA, with another office in Modesto, CA. He has 43 years of experience. His specialties include Therapeutic Radiology, Radiation Oncology and Radiology. Dr. Sien has received 2 awards. He speaks English.

Rating Overview

7 Ratings with 1 Comment

The overall average patient rating of Dr. Peter K Sien is Excellent. Dr. Peter K Sien has been rated by 7 patients. From those 7 patients 1 of those left a comment along with their rating. The overall rating for Dr. Peter K Sien is 5.0 of 5.0 stars.

Mapbox Map of Dr. Peter K Sien

Primary Address


7379 W Deschutes Ave Ste 100
Kennewick, WA 99336
(509) 987-1800

Mapbox Map of Dr. Peter K Sien


1316 Nelson Ave
Modesto, CA 95350
(209) 575-5870


Dr. Peter K Sien has the following 3 specialties

  • Therapeutic Radiology
  • Radiation Oncology

    A radiation oncologist is a physician who specializes in the use of nuclear medicine in diagnosing and treating cancer in a patient.
    These doctors work in concert with other cancer specialists in order to determine the best form of treatment for a specific patient. Radiation oncologists are in charge of determining the correct dose of radiation to be used in treatments like radiotherapy and chemotherapy, as well as the appropriate amount of time that radiation should be administered in order to maximize the therapeutic benefits.

  • Radiology

    A radiologist is a physician who specializes in the use of medical imaging to diagnose and treat illnesses or injuries in patients.
    The different types of medical imaging are X-ray, computed tomography (CT) scans, magnetic resonance imaging (MRI), ultrasound, and nuclear medicine.
    Radiologists are experts in these different types of tests and can advise a primary care doctor on which test is most appropriate in a specific case. These doctors also assist primary care doctors in analyzing the images produced by these tests in order to determine next steps necessary for treatment.

  • Specialty Expertise

    Dr. Peter K Sien has the following 10 expertise

  • Cancer
  • Nervous System Cancer
  • Breast Cancer
  • Lymphoma
  • Head and Neck Cancer
  • Radiation Oncology
  • Hodgkin's Lymphoma
  • Metastatic Breast Cancer
  • Radiation Therapy
  • Brachytherapy

Board Certifications

Dr. Peter K Sien is Board Certified in 1 specialty

See the board certifications this doctor has received. Board certifications provide confidence that this doctor meets the nationally recognized standards for education, knowledge and experience.


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Caring and Professional

I saw Dr. Sien after my cancer surgery. I had radiation therapy in his facility. He really cares, and listened to all my questions and concerns. I appreciated his professionalism and experience. I knew I was in good hands.

Wait time
5.0 minutes
Easy Appointment
Friendly Staff
Accurate Diagnosis
Bedside Manner
Spends Time with Me
Appropriate Follow-up
Full Review Rating Breakdown
  • Awards

    2 Awards

  • On-Time Doctor Award

    On-Time Doctor Award (2015)

    Vitals On-Time + Promptness Award recognizes doctors with consistent high ratings for timeliness of appointments. The honor is granted based on a physician's overall and promptness scores.

  • Patients' Choice Award

    Patients' Choice Award (2015)

    Patients' Choice recognition reflects the difference a particular physician has made in the lives of his/her patients. The honor is bestowed to physicians who have received near perfect scores, as voted by patients.

  • Education

    43 Years Experience

  • Medical College Of Wisconsin

    Graduated in 1975

  • Moffitt Hospital University Of Ca


  • Accepted Insurance

    Dr. Peter K Sien accepts the following insurance providers.

  • Aetna
    • Aetna Choice POS II
    • Aetna HMO Deductible Plan CA only
    • Aetna Managed Choice POS Open Access
    • Aetna Signature Administrators PPO
  • BCBS Blue Card
    • BCBS Blue Card PPO
  • Blue Cross California
    • Blue Cross CA Select Plus HMO
  • Cigna
    • CIGNA Open Access Plus
  • Humana
    • Humana Choice POS
  • Multiplan
    • Multiplan PPO
  • Premera
    • Premera Heritage Signature
    • Premera Heritage and Heritage Plus 1
    • Premera LifeWise Connect
  • United Healthcare
    • UHC Choice Plus POS
    • UHC Navigate HMO
    • UHC Navigate POS
    • UHC Options PPO

Locations & Directions

Uploaded January 1, 2012


Take a minute to learn about Dr. Peter K Sien, MD - Radiation Oncology in Kennewick, WA, in this video.

  • Similiar Doctors

    Dr. Peter K Sien is similar to the following 1 Doctors near Kennewick, WA.

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