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Robert Gin, MD Robert Gin, MD

Robert Gin, MD

Radiation Oncology

Patient Portal


Tucson - St. Mary’s

Tucson - St. Mary’s

1620 W. St. Mary's Rd.
Tucson, AZ 85745
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Call: 520-791-7996
Fax: 520-791-3329
Green Valley

Green Valley

1315 S. La CaƱada Dr.
Green Valley, AZ 85622
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Call: 520-625-9850
Fax: 520-625-8467

Education & Credentials


University of Arizona

Medical School

University of Arizona Medical School


University of Arizona


Good Samaritan Hospital

Board Certification

Radiation Oncology


  • American College of Radiology
  • American Society for Radiation Oncology
  • St. Mary's Breast Center Steering Committee




Dr. Gin practices radiation oncology with a special interest in breast and head and neck malignancies. He is experienced in the diagnosis and treatment of all soft tissue cancers such as breast, prostate, and lung cancer. Dr. Gin is also active in the use of intensity modulated radiation therapy (IMRT) and image guided radiation therapy (IGRT) of adult cancers.
While earning his Bachelor of Science degrees in Chemistry and Molecular and Cellular Biology from the University of Arizona, Dr. Gin also earned membership in the academic honors society, Phi Beta Kappa. He served as Chief Resident while completing his residency in radiation oncology at the University of Arizona.


Outside of work, Dr. Gin enjoys spending time with his wife Rebekah and their two children. He also enjoys cycling, running, and hiking.

Arizona Oncology - The US Oncology Network