Our Team

Guanshi Zhang, Ph.D.

Assistant Professor of Research
zhangg3@uthscsa.edu
Departments & Divisions
Department of Medicine
Division of Nephrology

Guogang Xu, Ph.D.

Research Scientist-Senior
xug@uthscsa.edu
Departments & Divisions
Department of Medicine
Division of Nephrology

Chandan Takkar, MD, FACP, FASN

Associate Professor, Internal Medicine, Division of Nephrology
Associate Clinical Chief, Division of Nephrology
Director of Dialysis Services, UHS
takkar@uthscsa.edu
Departments & Divisions
Department of Medicine
Division of Nephrology

Kumar Sharma, M.D., FAHA, FASN

Chief of the Division of Nephrology and Vice Chair for Research in the Department of Medicine
Hillis Chair and Vice Chair of Research
Director of Center for Renal Precision Medicine
sharmak3@uthscsa.edu
Departments & Divisions
Department of Medicine
Division of Nephrology

Programs
Ph.D. in Integrated Biomedical Sciences

Samin Sharma, M.D.

sharmas1@uthscsa.edu
Departments & Divisions
Department of Medicine
Division of Nephrology

Kinza Shamsi, M.D.

Nephrology Specialist
shamsi@uthscsa.edu
Departments & Divisions
Department of Medicine
Division of Nephrology

William Reeves, M.D., FACP, FASN

Professor, Medicine/Nephrology
Chairman, Department of Medicine
reevesw@uthscsa.edu
Departments & Divisions
Department of Medicine
Division of Nephrology

Wajeh Qunibi, M.D., FACP

Professor of Medicine
Director of Nephrology Faculty Development
qunibi@uthscsa.edu
Departments & Divisions
Department of Medicine
Division of Nephrology

Tareq Nassar, M.D., MBBS

Clinical Assistant Professor
Nephrology Fellowship-Program Associate Director
Medical Director UHS Renal Clinics and Dialysis West Clinic
nassart@uthscsa.edu
Departments & Divisions
Department of Medicine
Division of Nephrology

Daniel Montemayor, Ph.D.

Research Instructor
montemayord2@uthscsa.edu
Departments & Divisions
Department of Medicine
Division of Nephrology

Elia Keck, RN

Adult Nurse Practitioner
kecke@uthscsa.edu
Departments & Divisions
Department of Medicine
Division of Nephrology

Programs
M.S. in Nursing

Alisa Marie Gregory, RN, MSN, ACNP-BC

Acute Care Nurse Practitioner
Specialist, Department of Medicine/Nephrology
gregorya@uthscsa.edu
Departments & Divisions
Department of Medicine
Division of Nephrology

Programs
M.S. in Nursing

Goutam Ghosh-Choudhury, Ph.D.

Professor
Department of Medicine/Nephrology. Senior Research Career Scientist
South Texas Veterans Health Care System
choudhuryg@uthscsa.edu
Departments & Divisions
Department of Medicine
Division of Nephrology

Programs
M.S. in Clinical Investigation & Translational Science

Ashley Garcia–Everett, M.D.

Clinical Assistant Professor
Medical Director University Dialysis Southeast
garciaeveret@uthscsa.edu
Departments & Divisions
Department of Medicine
Division of Nephrology

Subrata Debnath, MBBS, MPH, PhD

Instructor/Research
nath@uthscsa.edu
Departments & Divisions
Department of Medicine
Division of Nephrology