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Daniel P. O'Hair, MD

4.8 out of 5 ( 23 Ratings)


Daniel O’Hair, MD joined Boulder Heart as Cardiovascular Surgery Program Chair in 2019. With a unique combination of skills and more than 20 years of experience, Dr. O’Hair works effectively in both the operating room and the cardiac catheterization lab. This allows him to advise patients from a perspective that can be matched by few physicians. At Boulder Heart, Dr. O’Hair performs a range of cardiovascular surgeries, including complex open-heart surgery and robotic-assisted mitral valve repair.

Dr. O’Hair is one of the nation’s leading experts in robotic-assisted mitral valve repair, and Colorado’s most experienced surgeon with this minimally invasive procedure performed with the da Vinci® Xi™ Surgical System. Dr. O’Hair also has been selected as a global proctor for transcatheter aortic valve replacement (TAVR), meaning he teaches other cardiologists to perform this innovative procedure.

Prior to joining Boulder Community Health, Dr. O’Hair successfully created one of the largest, high-performing heart valve programs in the United States and was active in clinical trials. He served as a medical community leader in Wisconsin for two decades, performing the first robotic-assisted mitral valve repair, TAVR, and mitral valve replacement (TMVR) procedures in the state.

Dr. O’Hair received his medical degree from Medical College of Wisconsin, where he also completed his residency and a research fellowship in general surgery. He went on to complete an additional fellowship in transplantation as well as a residency in cardiothoracic surgery at Columbia University College of Physicians and Surgeons.

Affiliations Boulder Heart at Anderson Medical Center
  • Medical School
  • Medical College of Wisconsin
  • Residency
  • Medical College of Wisconsin
  • Columbia University College of Physicians and Surgeons
  • Fellowship
  • Medical College of Wisconsin
  • Columbia University College of Physicians and Surgeons
  • Structural Valve Deterioration After Self-Expanding Transcatheter or Surgical Aortic Valve Implantation in Patients at Intermediate or High Risk 2022
    • Author: Daniel O'Hair, MD
    • Publisher: Journal of the American Medical Association (JAMA)

    The study, the largest of its kind to date, was published Dec. 14 in Journal of the American Medical Association (JAMA). The outcomes for 4,700 patients were analyzed in the study to determine the frequency of structural valve deterioration at five years for those who underwent transcatheter aortic valve replacement (TAVR) and those who underwent surgical aortic valve replacement (SAVR).

    View Publication
  • 04/10/2024

    I felt like the total staff at Boulder Heart were superb!! #1. Excellent. #2-7. MOST EXCELLENT.

  • 10/02/2023

    Didn't do anything about my rib pain that was caused by the surgery.

  • 06/11/2023

    *Dr. O'Hair is awesome.