
Get to know our current fellows and fellowship leaders

Maheen Khan, MBBS
Residency: Louisiana State University in Shreveport, Louisiana
“Nephrology embodies everything that drew me to medicine: the complex physiology that makes me wear my Sherlock Holmes hat, the opportunity to work in global health for kidney diseases, the disparities in kidney health awaiting to be addressed, the adrenal rush of the critical aspect of renal pathology, the holistic medicine you can practice as a nephrologist and the conversations regarding quality of life with kidney disease.“

Yazan Kharabsheh, MD
Residency: Thomas Hospital in Fairhope, Alabama
“Throughout my clinical rotations, I’ve encountered individuals grappling with chronic kidney conditions that significantly impacted their quality of life. Witnessing their struggles and working alongside dedicated nephrologists inspired me to provide comprehensive care that extends beyond medical management.”

William Martin, MBChB
Residency: Mayo Clinic in Rochester, Minnesota
“While a research assistant at the Regenerative Medicine Institute, NUI Galway, I worked in several clinically-oriented, nephrology projects. This role crystallised the clinical problem that is diabetic kidney disease for me: a progressive disease despite optimal therapy. From this emerged my career ambition to develop new therapies that improve outcomes for people with diabetic kidney disease, which has informed my training to date.”

Ramayee Nadarajan, MBBS
Residency: University of South Alabama in Mobile, Alabama
“[My grandfather] drove my passion for medicine when he took me to his VA clinic every day and let me sit at his desk. He used to tell me, ‘Patients tell you stories and help redefine your world, even when you thought you knew everything in it. You get to tell them answers and share their ups and downs.’ This thought of a patient-centered approach towards becoming a diagnostician is what led me to pursue training in internal medicine.”

Nicole Shammas, MD
Residency: University of Colorado in Aurora, Colorado
“During my research month in residency, I spent time in a combined rheumatology/nephrology lupus clinic which first spurred my interest in renal. I found the pathophysiology and management of lupus nephritis to be both fascinating and rewarding given a large portion of patients were Hispanic women, and I’m half Cuban. Another factor that drew me to renal was the involvement in critical care, specifically in patients who required emergent dialysis. “

AbdulMoid Shehzad, MBBS
Residency: The Jewish Hospital in Cincinnati, Ohio
“Nephrologists are medical detectives like Sherlock Holmes. They play a vital role in investigating patients’ conditions and helping other medical team members decipher complex medical problems. These challenges stimulate my mind and have motivated me to pursue a career in nephrology. I eagerly anticipate taking on this role.”
First-year fellows (2025-2027)

Catey Ashlyn Abbott, DO
Residency: University of Arkansas in Fayetteville, Arkansas; (Chief Resident)
“Witnessing firsthand the complex decisions patients face regarding their care – particularly in critical settings – highlights the importance of respecting and supporting their right to make informed choices about their health.”

Jacob Lambertsen, MD
Residency: Atrium Health Wake Forest Baptist in Winston-Salem, North Carolina
“Hard work was instilled in me at a young age. I quickly learned hard work may get results, but curiosity makes them meaningful.”

Meng Hsun Lee, MD
Residency: Maimonides Medical Center in Brooklyn, New York
“As a student, math and physics were my favorite subjects, captivating me with their logical structure and the challenge of solving intricate problems.”

Bibi Shazeeda Razak, MD
Residency: Richmond University Medical Center in Staten Island, New York
X: @BibiRazak
“My journey has taught me the importance of resilience, empathy, and continuous learning.”

Hoang “Anh” Tang, DO
Residency: MercyOne Des Moines/PHC Consortium in Des Moines, Iowa; (Chief Resident)
“The constant search for an answer, whether it be for the pathophysiology of crystalline nephropathy or the reason why your young patient has acute renal failure is not only engaging but also fulfilling.”

Kevser Akyuz Yesilyaprak, MD
Residency: Wayne State University Ascension Providence Rochester Hospital in Michigan
“[I] found my calling in medicine, where I now solve the riddles of the human body. By understanding pathophysiology, synthesizing symptoms, lab and imaging findings, I bring together the pieces of each patient’s condition, witnessing their stories and contributing to their well-being.”
Our Nephrology Fellowship leaders

Seth Goldberg, MD
Training Program Director, Nephrology Fellowship
Associate Professor of Medicine
X: @sgoldber99
sgoldber@wustl.edu
Washington University School of Medicine
660 S. Euclid Ave., Campus Box 8129
St. Louis, MO 63110
Phone: 314-362-7211

Frank O’Brien, MD, MRCPI
Senior Associate Program Director
Assistant Professor of Medicine
X: @frankjobrien84
fobrien@wustl.edu
Washington University School of Medicine
660 S. Euclid Ave., Campus Box 8129
St. Louis, MO 63110
Phone: 314-362-7211

Morgan Schoer, MD
Associate Program Director
Assistant Professor of Medicine
mschoer@wustl.edu
Washington University School of Medicine
660 S. Euclid Ave., Campus Box 8129
St. Louis, MO 63110
Phone: 314-362-7211

Ashley Edwards
Senior Fellowship Program Coordinator
Edwards.a@wustl.edu
Washington University School of Medicine
660 S. Euclid Ave., Campus Box 8129
St. Louis, MO 63110
Phone: 314-362-7211