Our Team
Our board-certified nephrologists bring decades of combined experience in kidney disease, hypertension, dialysis, and transplant medicine — delivering expert, patient-centered care at every visit.
Meet Our Physicians
Hear directly from our team about their expertise, approach to care, and what drives their passion for nephrology.
Devaraj Munikrishnappa, M.D.
Founder and President
Consultant Nephrologist
Dr. Munikrishnappa is the co-founder and President of Houston Kidney Specialists Center, board certified in internal medicine and nephrology, with over three decades of experience in patient-oriented kidney care.
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Ghayyath Sultan, M.D.
Founder and Vice President
Consultant Nephrologist
Dr. Sultan is the co-founder and Vice President of Houston Kidney Specialists Center, board certified in internal medicine and nephrology, and recognized for his profound knowledge of kidney disease and his deep commitment to long-term patient relationships.
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Tsegaw Egziti, M.D.
Consultant Nephrologist
Dr. Egziti is a board-certified nephrologist known for his compassionate approach and deep commitment to improving patients' quality of life through evidence-based kidney care.
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Jonathan Pankow, M.D.
Consultant Nephrologist
Dr. Pankow is a board-certified nephrologist and former Chief Fellow who believes that current knowledge and meticulous team coordination are the foundation of the best possible patient care.
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Dr. Mohamed Sheta, MD, FASN, FASDIN
Consultant General and Interventional Nephrologist
Dr. Sheta is an award-winning interventional nephrologist, one of the few nationwide performing minimally invasive dialysis access surgeries, and a published researcher recognized internationally for his expertise.
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Patricia Vargas, MSN, APRN, AGACNP-C
Nurse Practitioner — Practice Supervisor
Patricia Vargas has been with Houston Kidney Specialists Center since its founding in 2019, playing a pivotal role in shaping the organization through her unique experience as both a clinical provider and practice supervisor.
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Alicia Baena, MSN, APRN, FNP-C
Nurse Practitioner
Alicia Baena is a board-certified Family Nurse Practitioner whose years of caring for patients with kidney disease in primary care led her to pursue a dedicated career in nephrology at HKSC.
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Stephanie Dykalski, MSN, APRN, NP-C
Nurse Practitioner
Stephanie Dykalski is a board-certified Nurse Practitioner with a background in Emergency Medicine and General Surgery who brings her deep interest in nephrology to the HKSC team.
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Natalie Bernard, MSN, APRN, FNP-C
Nurse Practitioner
Natalie Bernard is a board-certified Family Nurse Practitioner with experience across critical care, interventional radiology, and dialysis, known for her thoroughness and her warm, reassuring manner with patients.
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Ready to See a Specialist?
Our team is accepting new patients at multiple Houston-area locations. Request an appointment today.