Page Content

Meet Our Fellows

Our fellows and faculty foster a collegial environment and education-focused culture that provides an inclusive learning experience. Training can be challenging, but our program is close-knit and each fellow brings a dedication to providing stellar patient care as well as a collaborative learning experience.

Meet our current fellows in the Cardiovascular Diseases Fellowship at Mayo Clinic in Jacksonville, Florida.

Class of 2022

Julio Perez Downes, D.O.

Julio Perez-Downes, D.O.

Medical school – Lake Erie College of Osteopathic Medicine, Bradenton, Florida

Residency – University of Florida, Jacksonville, Florida (Chief Resident)

Interests – Pathophysiology and mechanisms that drive atrial fibrillation

Keniel Pierre, Jr. M.D.

Keniel Pierre, M.D.

Medical school – Florida State University, Tallahassee, Florida

Residency – University of South Alabama, Mobile, Alabama (Chief Resident)

Interests – Diagnosis and treatment of valvular heart disease using advanced cardiac imaging

Susie Sennhauser, M.D.

Susie Sennhauser, M.D.

Medical school – Florida Atlantic University, Boca Raton, Florida

Residency – University of Miami, Fort Lauderdale, Florida (Chief Resident)

Interests – Design and application of artificial intelligence for diagnosis and prognosis 

Class of 2023

Robyn Bryde, MD

Robyn Bryde, M.D.

Medical School - Mercer University School of Medicine, Macon, Georgia

Residency – Mayo Clinic, Jacksonville, Florida

Interests – Cardiovascular imaging and pathophysiologic cardiovascular adaptions in
athletic populations

Alexander Heckman, MD

Alexander Heckman, M.D. 

Medical School – Ross University School of Medicine, Bridgetown, Barbados

Residency – Mayo Clinic, Jacksonville, Florida (Chief Resident)

Interests - Cardiac Intensive Care and Advanced Heart Failure and Transplant Cardiology

 Charlene Rohm, MD

Charlene Rohm, M.D.  

Medical School – Medical College of Georgia, Augusta, Georgia

Residency – WellStar Kennestone Regional Medical Center Marietta, Georgia (Chief Resident)

Interests - Interventional cardiology and structural heart disease; special interest in
treating people with Down syndrome and other special needs individuals 

Class of 2024

Sina Manthey, M.D.

Sina O'Sullivan, M.D.

Medical school –Medical University of Vienna, Vienna, Austria

Residency – Pennsylvania Hospital, Philadelphia, Pennsylvania

Interests – Women's Cardiovascular Health

Samantha Espinosa, M.D.

Samantha Espinosa, M.D.

Medical school – University of Chicago, Chicago, Illinois

Residency – Mayo Clinic, Jacksonville, Florida

Interests – Advanced cardiac imaging with a focus on structural heart disease and preventative cardiology with a focus on health care disparities

Wakil Irfan, M.D.

Wakil Irfan, M.D.

Medical school – Heart University Faculty of Medicine, Afghanistan (Valedictorian)

Residency – Jacobi Medical Center, Bronx, New York (Chief Resident)

Interests – Cardiac arrythmia



Cardiovascular Diseases Fellowship class of 2018-2019
Cardiovascular Diseases Fellowship class of 2018-2019