Departments and specialties

Mayo Clinic has one of the largest and most experienced practices in the United States, with campuses in Arizona, Florida and Minnesota. Staff skilled in dozens of specialties work together to ensure quality care and successful recovery.

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Displaying 31-40 out of 85 doctors available

  1. Bamvi B. Fohtung, M.D.

    Bamvi B. Fohtung, M.D.

    1. Cardiologist
    1. Phoenix, AZ
    Areas of focus:

    Cardioversion, Stress echocardiogram, Transesophageal echocardiogram, Echocardiogram, Intraoperative echocardiography, ...Heart disease, Heart valve disease, Structural heart disease

  2. David A. Foley, M.D.

    David A. Foley, M.D.

    1. Cardiologist
    2. Echocardiographer
    3. Internist
    1. Rochester, MN
    Areas of focus:

    Echocardiogram, Cardiovascular disease prevention, Heart valve disease

  3. Monique A. Freund, M.B.B.S., M.D.
    Areas of focus:

    Coronary angiogram, Cardioversion, Stress echocardiogram, Echocardiogram, Heart failure, Cardiomyopathy, Atrial fibrill...ation, Heart valve disease, Pulmonary hypertension, Coronary artery disease

  4. Jeffrey B. Geske, M.D.

    Jeffrey B. Geske, M.D.

    1. Cardiologist
    2. Echocardiographer
    3. Internist
    1. Rochester, MN
    Areas of focus:

    Pericardiocentesis, Transesophageal echocardiogram, Echocardiogram, Heart disease, Heart valve disease, Hypertrophic ca...rdiomyopathy

  5. Michael Gharacholou, M.D., M.S.

    Michael Gharacholou, M.D., M.S.

    1. Echocardiographer
    2. Internist
    3. Interventional Cardiologist
    1. Jacksonville, FL
    Areas of focus:

    Endovascular treatment, Echocardiogram, Heart failure, Peripheral artery disease, Heart valve disease, Coronary artery ...disease

  6. Martha Grogan, M.D.

    Martha Grogan, M.D.

    1. Cardiologist
    2. Internist
    1. Rochester, MN
    Areas of focus:

    Echocardiogram, Heart failure, Cardiomyopathy, Cardiac amyloidosis

  7. Donald J. Hagler, Sr., M.D.

    Donald J. Hagler, Sr., M.D.

    1. Pediatric Cardiologist
    1. Rochester, MN
    2. Phoenix, AZ
    Areas of focus:

    Cardiac catheterization, Fetal echocardiogram, Transesophageal echocardiogram, Echocardiogram, Percutaneous valve proce...dure, Heart disease, Atrial septal defect, Congenital heart disease, Patent foramen ovale, Ventricular septal defect, Patent ductus arteriosus, Truncus arteriosus

  8. John H. Haley, M.D.

    John H. Haley, M.D.

    1. Cardiologist
    2. Echocardiographer
    Areas of focus:

    CT scan, Nuclear medicine scan, Echocardiogram

  9. Denzil R. Hill, M.D.

    Denzil R. Hill, M.D.

    1. Anesthesiologist
    1. Rochester, MN
    Areas of focus:

    Echocardiogram

  10. Justin M. Horner, M.D., M.P.H.

    Justin M. Horner, M.D., M.P.H.

    1. Pediatric Cardiologist
    1. Rochester, MN
    Areas of focus:

    Fetal echocardiogram, Transesophageal echocardiogram, Echocardiogram, Congenital heart disease

Research Profiles

Aug. 21, 2026
  1. Echocardiogram (echo). American Heart Association. https://www.heart.org/en/health-topics/heart-attack/diagnosing-a-heart-attack/echocardiogram. Accessed Aug. 13, 2026.
  2. Echocardiography. Merck Manual Professional Version. https://www.merckmanuals.com/professional/cardiovascular-disorders/cardiovascular-tests-and-procedures/echocardiography. Accessed Aug. 13, 2026.
  3. Electrocardiography. Merck Manual Professional Version. https://www.merckmanuals.com/professional/cardiovascular-disorders/cardiovascular-tests-and-procedures/electrocardiography. Accessed Aug. 13, 2026.
  4. Heart tests. National Heart, Lung, and Blood Institute. https://www.nhlbi.nih.gov/health/heart-tests. Accessed Aug. 13, 2026.
  5. Ejection fraction heart failure measurement. American Heart Association. https://www.heart.org/en/health-topics/heart-failure/diagnosing-heart-failure/ejection-fraction-heart-failure-measurement. Accessed Aug. 13, 2026.
  6. Testing for heart valve problems. American Heart Association. https://www.heart.org/en/health-topics/heart-valve-problems-and-disease/getting-an-accurate-heart-valve-diagnosis/testing-for-heart-valve-problems. Accessed Aug. 13, 2026.
  7. Cardiac stress testing. Merck Manual Professional Version. https://www.merckmanuals.com/professional/cardiovascular-disorders/cardiovascular-tests-and-procedures/cardiac-stress-testing. Accessed Aug. 13, 2026.
  8. Transesophageal echocardiography. American Heart Association. https://www.heart.org/en/health-topics/heart-attack/diagnosing-a-heart-attack/transesophageal-echocardiography. Accessed Aug. 13, 2026.
  9. Ultrasound imaging. U.S. Food and Drug Administration. https://www.fda.gov/radiation-emitting-products/medical-imaging/ultrasound-imaging. Accessed Aug. 13, 2026.
  10. Ali MT, et al. Incidence of severe adverse drug reactions to ultrasound enhancement agents in a contemporary echocardiography practice. Journal of the American Society of Echocardiography. 2024; doi:10.1016/j.echo.2023.10.010.
  11. Ocagli H, et al. Type, severity, frequency and management of adverse reactions associated with ultrasound contrast agents: A systematic review and meta-analysis. European Radiology. 2026; doi:10.1007/s00330-026-12594-5.
  12. Zhang L, et al. Transesophageal echocardiography related complications. Frontiers in Cardiovascular Medicine. 2024; doi:10.3389/fcvm.2024.1410594.
  13. Lang RM, et al. Recommendations for cardiac chamber quantification by echocardiography in adults: An update from the American Society of Echocardiography and the European Association of Cardiovascular Imaging. Journal of the American Society of Echocardiography. 2015; doi:10.1016/j.echo.2014.10.003.
  14. IAC standards and guidelines for adult echocardiography accreditation. Intersocietal Accreditation Commission. https://intersocietal.org/document/adult-echocardiography-accreditation-standards/. Accessed Aug. 13, 2026.

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