Sienna Corbin, PA-C


(406) 771-2171

Accepting New Patients


Sienna, PA-C

Sienna Corbin, PA-C, works alongside the current primary care team to support Medicare annual wellness patients. Sienna completed her clinical rotations in pediatric medicine, women’s health and family medicine among other fields.

Sienna graduated with a Bachelor of Science in Neurobiology in 2019 from the University of California Davis, in Davis, California. In 2023, Sienna completed a Master of Medical Science in Physician Assistant Studies from Marshall B Ketchum University in Fullerton, California. While in school she volunteered at Bayanihan Clinic, a clinic which focused on providing free healthcare to Filipino World War II veterans and uninsured patients. She says the time she spent there showed her just how much of an impact one provider can make in an individual’s life.

She was inspired to go into medicine when she witnessed the quality of care her grandmother received during multiple hospital visits in her later years. “I wanted to do for others what medical providers and staff did for her,” Sienna said.

In her spare time, Sienna enjoys spending time with family, exploring the outdoors and playing tennis. A fun fact about Sienna is that her favorite drink is boba tea and she loves finding new boba restaurants wherever she goes.


Great Falls Clinic Main
1400 29th Street South – First Floor/Main Level
Great Falls, MT 59405
(406) 454-2171


  • Medicare Annual Wellness


  • University of California Davis, Bachelor of Science of Neurobiology, Davis, California, 2019
  • Marshall B Ketchum University, Master of Medical Science in Physician Assistant Studies, Fullerton, California, 2023