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Jim O'Neill, MSN, APRN


Austin - South Post Oak Centre

4316 James Casey St
Austin, TX 78745

About Jim O'Neill

Jim O'Neill is an Advanced Practice Registered Nurse (APRN) and joined Texas Heart and Vascular in 2011. After your initial workup by Dr. Nguyen, Jim will closely coordinate with Dr. Nguyen to assess and treat your heart conditions in clinic, providing you with understandable explanations of your cardiac state of health and your plan of care, keeping it tailored to your specific needs.

Jim completed his Master of Science in Nursing at the University of Texas at Austin and is licensed by the Texas Board of Nursing as an Advanced Practice Registered Nurse with prescriptive privileges. He is also a Registered Cardiac Sonographer. Prior to joining TH&V, Jim worked in a cardiovascular house call practice offering mobile care to housebound patients by providing portable EKG, Transthoracic and Vascular ultrasound assessment. In addition to his clinical practice, from 2009 to 2013 Jim also served as a Clinical Instructor to Advanced Practice Nursing students in Advanced Assessment, Acute Care and Diagnosis & Management at the University Of Texas School Of Nursing.

“My role is to provide the patient a basic understanding of their current cardiac state of health by helping them understand how the heart works, as well as what their symptoms - supported by reasonable testing - suggest may not be working well. With this context in place, I help them understand the personalized care plan that Dr. Nguyen has in mind so they can make informed choices regarding lifestyle changes, medicinal treatment regimens, and interventions, if necessary, to optimize their cardiac health, consistent with the latest standards of care.”

Supervising Physician

Vinh Nguyen, DO


Medical School
Master of Science in Nursing, Adult Health Clinical Nurse Specialist – The University of Texas at Austin
Paramedic program - Austin Community College
Master of Business Administration - Fuqua School of Duke University

Certifications & Memberships

  • American Nurses Credentialing Center (ANCC) – Adult Health Clinical Nurse Specialist
  • Cardiovascular Credentialing International (CCI) - Registered Cardiac Sonographer (RCS)


  • Sigma Theta Tau International Honor Society of Nursing
  • American Nurses Association
  • Austin Advanced Practice Nurses
  • Texas Clinical Nurse Specialists
  • Texas Nurses Association





Office Locations

Austin - South Post Oak Centre
4316 James Casey St
Austin, TX 78745
Phone: (512) 623-5300
Fax: (512) 623-5399