Dr. Peter Sien, MD

Dr. Peter Sien, MD

Radiation Oncology  ·  
Male  ·  
Age 75
Dr. Peter Sien, MD is a radiation oncology specialist in Modesto, CA and has been practicing for 39 years. He graduated from Medical College Of Wisconsin in 1975 and specializes in radiation oncology and radiology.

1316 Nelson Ave

Modesto, CA 95350

Contact Information

(209) 575-5870

Insurance Accepted

  • Aetna
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of California
  • Cigna
  • MultiPlan

*Please verify this information when scheduling an appointment.

Learn about Dr. Sien

Be confident in your decisions by checking out your provider's top areas of care, education, patient reviews and more. Learn about finding the right doctor for you.

Top Care Areas

See how frequently Dr. Sien performs your care needs compared to other doctors.

more than 61% of peers

Dr. Sien's percentages are based on the rate of treatment compared to peers nationwide from insurance data. Learn more info about our data and this Top Care Areas component.

2  Specialties

  • Radiation Oncology
  • Radiology

1  Board Certifications

  • Therapeutic Radiology
    Accredited by: American Board of Radiology*

2  Conditions Treated

2  Procedures

  • Brachytherapy
  • Mammosite Catheter Insertion

Background Check

0 Malpractice Claims

No malpractice history found for California.

0 Sanctions

No sanctions history found for the years that Healthgrades collects data.

0 Board Actions

No board actions found for the years that Healthgrades collects data.


  • San Jose State U
    Undergraduate School | Graduated 1971
  • Medical College Of Wisconsin
    Medical School | Graduated 1975
  • Ucsf Medical Center
    Internship Hospital | Completed 1976
  • Ucsf Medical Center
    Residency Hospital | Completed 1979
  • University Medical Center
    Fellowship Hospital | Completed 2004
  • U Of Colorado, Denver
    Other Education | Completed 1986

Awards & Recognition

Awards & Honors
  • Healthgrades Honor Roll
Media & Publications

Dr. Sien has no media or publications listed.

Languages Spoken

  • English
  • Chinese
  • Spanish

Memberships & Professional Affiliations

Dr. Sien does not have any memberships or affiliations listed. If you are Dr. Sien and would like to add memberships or affiliations, please update your profile.

Dr. Sien's Reviews

Help millions of people find the right doctor. Share your experience today!
Likelihood of recommending Dr. Sien to family and friends
Image of Dr. Sien
Are you Dr. Sien?
Make it easy for patients to share their feedback. Also manage your personalized profile!

Nearby doctors with similar experience

Radiation Oncology
Radiation Oncology
Radiation Oncology
Radiation Oncology
Radiation Oncology
Radiation Oncology
Radiation Oncology
Radiation Oncology
Radiation Oncology
Radiation Oncology