Current and Past Fellows

Hebah Alrahamneh, MD
Residency: Mountain View Regional Medical Center, Las Cruces, NM
*Track: Clinical Nephrology

Ammar Mahmood, MD
Residency: Las Palmas Del Sol Medical Center, El Paso, TX
*Track: Nephrology Critical Care

Emmanuel Garrastegui Mercado, MD
Residency: Las Palmas Del Sol Medical Center, El Paso, TX
*Track: Clinical Nephrology

Fedoua Er Rbii, MD (Air Force)
Residency: Malcolm Grow Medical Center, Joint Base Andrews, MD
*Track: Clinical Nephrology

Namrata Carpenter, MD
Residency: Texas Institute of Graduate Medical Education and Research, San Antonio, TX
*Track: Clinical Nephrology

Gerardo Astorga, MD
Residency: UT Rio Grande Valley Knapp Medical Center, Weslaco, TX
*Track: Clinical Nephrology

Julia Switzer, MD (Air Force)
Residency: San Antonio Uniformed Services Health Education Consortium, Fort Sam Houston, TX
*Track: Clinical Nephrology

Current 2nd year Fellows (AY 2025-2027)

Imran Amer, MD
Residency: Guthrie/Robert Packer Hospital, Sayre, PA
*Track: Clinical Nephrology

Ahnaf Arefin, MD
Residency: UTHSCSA, San Antonio, TX
*Track: Clinical Nephrology

Stephanie Matheu, MD
Residency: Texas Institute of Graduate Medical Education and Research, San Antonio, TX
*Track: Clinical Nephrology

Fernando Palacios Cuervo, MD
Residency: Hospital Nacional Alberto Sabogal Sologuren, Lima, Peru
*Track: Clinical Nephrology

Ji-Min Park, MD (US Air Force)
Residency: San Antonio Uniformed Services Health Education Consortium, Fort Sam Houston, TX
*Track: Clinical Nephrology

William Parkinson, MD (US Air Force)
Residency: San Antonio Uniformed Services Health Education Consortium, Fort Sam Houston, TX
*Track: Nephrology Critical Care

Edwin Torres-Garcia, MD
Residency: San Juan City Hospital, San Juan, Puerto Rico
*Track: Clinical Nephrology

Current 1st year Fellows (AY 2026-2028)

Lakin Dammer, D.O. (US Air Force)
Residency: Keesler Air Force Base, Biloxi, MS
*Track: Clinical Nephrology

Yareli Durazo Gonzalez, M.D.
Residency: UT Rio Grande Valley, Weslaco, TX
*Track: Clinical Nephrology

Oshadhi Manchanayake, M.D.
Residency: South Brooklyn Health, Brooklyn, NY
*Track: Nephrology Critical Care

Yaqub Nadeem Mohammed, M.D.
Residency: Wayne State University, Pontiac, MI
*Track: Clinical Nephrology

Mahmoud Numan, M.D.
Residency: Specialty Hospital, Amman, Jordan
*Track: Clinical Nephrology

Melina Ortiz, M.D.
Residency: UT Health San Antonio, San Antonio, TX
*Track: Clinical Nephrology

Hannah Tully Presson, D.O. (US Air Force)
Residency: Wayne State University Boonshoft SOM, Dayton, OH
*Track: Clinical Nephrology