About our fellows
The Ohio State Division of Nephrology is committed to training the next generation of professionals in kidney care. We offer several fellowship programs that help students strengthen their knowledge of sub-disciplines such as kidney and pancreas transplantation as well as adult-pediatric nephrology.
Nephrology Fellows
Second year fellows
Kathleen Castillo, MD
Residency: Mercy Health-St. Elizabeth Youngstown Hospital
Ali Rizvi, DO
Residency: Allegheny Health Network
Maha Wazir, MBBS
Residency: Khyber Teaching Hospital
First year fellows
Omar Gutierrez, MD
Residency: Cleveland Clinic
Antonio Llompart, MD
Residency: HCA Florida Blake Hospital
Jay Mathias, DO
Residency: Wright State University
Amr Moustafa, Mb BCh
Residency: Brooklyn Hospital Center
Balaj Rai, MD
Residency: Christ Hospital
Ashraf Rjob, MB BCh
Residency: CMountainView Regional Medical Center
Glomerular Nephrology Fellows
No current residents
Transplant Nephrology Fellow
Sarah Abu Kar, MD
Residency: Richmond University Medical Center
Fellowship: Vanderbilt University Medical Center
Med/Peds Nephrology Fellows
Fourth year fellows
Mayra Osequera, MD
Residency: University of Puerto Rico
Third year fellows
Denise Kimbrough
Residency: Medical University of South Carolina
Medical School: Medical University of South Carolina College of Medicine
More about Nephrology
2025
- Arrsh Bajaj, MBBS – Private practice in Bowling Green, KY
- Sai Prasad Desikan, MD – Advanced Fellowship at Mayo Clinic
- Vincent Ngo, MD – Faculty at the University of Cincinnati
- Neha Patel, MD – Critical Care Advanced Fellowship at
- Carter Wallace, DO – Faculty at The Ohio State University
2024
- Madeline Chung, MD (GN Fellow) – Faculty at The Ohio State University
- Erika Critell, DO – Private Practice at OhioHealth in Columbus, OH
- Abdalla Ismail, MD -Private Practice in Canton, OH
- Patrick Schaffer, DO – Private Practice at OhioHealth in Columbus, OH
2023
- Madeline Chung, MD - Glomerular Nephrology fellowship at The Ohio State University
- Marie Fouad, MD - Private practice in Texas
- Omer Sheikh, MD - Private practice in Akron, OH
- Luis Soto, MD - Private practice in Columbus, OH
- Liza Cholin, MD (transplant fellow) - Transplant faculty at The Ohio State University
- Jessamyn Carter, MD (med/peds fellow) - Faculty at The University of Michigan
2022
- Dharika Shah, DO – Private practice, Cincinnati, OH
- Kara Kaplan, MD – Critical care nephrology fellowship at University of Cincinnati
- Alka Tyagi, DO – Critical care nephrology in St. Louis, MO
- Karim Attia, MD – Private practice in Columbus (Ohio Kidney Consultants)
- Priya Yenebere, DO (transplant fellow) – Transplant faculty at Indiana University
2021
- Mohan Doriaswamy, MD – Critical care nephrology, Texas Tech University, Lubbock TX
- Brandon Dunmyre, DO – Faculty at Allegheny Health Network, Pittsburgh, PA
- Karen Flores, MD – Transplant nephrology fellowship at Washington University, St. Louis, MO
- Tariq Baig, MD – Transplant nephrology fellowship at Iowa University, Iowa City
2020
- Rasha Alawieh, MD – Transplant nephrology fellowship at University of Washington, Seattle, WA
- Joe Tasch, DO – Private practice, Lancaster, OH
- Tyler Gutkoski, MD – Joined OSUWMC nephrology faculty
- Sherif Metwally, MD – Private practice, Detroit, MI
- Jessica Nelson, MD (Med peds fellowship) – Joined OSUWMC nephrology faculty