CMHVI Providers

Dr. Alrich L. Gray // Central Montana Heart & Vascular Institute

About Dr. Alrich L. Gray

Dr. Gray was born in Washington, DC and grew up in Beckley, WV. He lived in several states before coming to Montana including Minnesota, Virginia, Pennsylvania and New York. He loves to travel and enjoys the outdoors. He is married with 4 kids, 2 dogs, and 2 cats.

Board Certified in:

  • General Cardiology
  • Interventional Cardiology
  • Cardiac Electrophysiology
  • Cardiovascular Diseases
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More About Dr. Gray


  • BS. Pharamacy: (1994) Howard University, Washington, DC
  • PH.D - Pharmacology: (2001) Howard University, Washington, DC
  • MD: (2003) Howard University, Washington, DC


  • Residency: Internal Medicine Mayo Clinic, Rochester, MN (2003-2006)
  • Fellowship: Cardiology University of Virginia Charlottesville, VA (2007-2010)
  • Fellowship: Electrophysiology University of Virginia, Charlottesville, VA (2010 - 2011)
  • Fellowship: Interventional Cardiology Lennox Hill Hospital, New York, NY (2011-2012)

About Liz O'Connor, APRN

As a Cardiovascular Nurse Practitioner, I have spent the majority of my 37 years in the healthcare field practicing in cardiology. I have a vast array of experience in evaluating and treating patients with a variety of cardiac and vascular conditions in collaboration with Cardiologists.

Through my career, I have gained invaluable knowledge, education and hands-on experience with both inpatient and outpatient follow-ups, stress testing, coumadin management, among many other duties.

When I’m not at work, I enjoy spending time with both family and friends, reading murder mysteries and singing with the Great Falls Symphonic Choir.

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Sarah Roberts, ANP-C

Sarah is an adult nurse practitioner specializing in cardiology working in the clinic and hospital setting. She has over 20 years of nursing experience, 10 years as a nurse practitioner, earning her Masters Degree in Nursing from Quinnipiac University and Bachelors Degree from Fitchburg State University. She is nationally certified by the American Academy of Nurse Practitioners. She is a member of American Academy of Nurse Practitioners, American Association of Critical Care Nurses, American College of Cardiology and Sigma Theta Tau. Sarah has a passion for helping others and provides compassionate care to meet the unique needs of each individual. She enjoys educating patients on their disease process and promoting healthy lifestyles as well as management of cardiac risk factors while encouraging patients to take an active role in their own health. In her free time Sarah enjoys spending time outdoors fly fishing, hiking and camping with her husband Mike.

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