Fort Worth Renal Group

Dr. Oladapo (Dapo) Afolabi, MD

Dr. Oladapo "Dapo" Afolabi is a co-founding partner and president of Fort Worth Renal Group, one of the leading independent nephrology practices in the Dallas-Fort Worth metroplex. With more than 20 years of clinical experience and board certification in both Internal Medicine and Nephrology, Dr. Afolabi is a certified Interventional Nephrologist who performs minimally invasive vascular access procedures that are essential for patients requiring hemodialysis. As a Fellow of the American Society of Nephrology (FASN), Dr. Afolabi has earned recognition from his peers as a Fort Worth Top Doc continuously since 2006, most recently in 2025, and was honored as Physician of the Year at Texas Health Resources Harris Fort Worth in 2018. He serves as the sub-specialty education coordinator for the THR Fort Worth Internal Medicine training program and holds an assistant professorship at TCU College of Medicine, mentoring the next generation of kidney care specialists. Dr. Afolabi also serves as medical director for several US Renal Care outpatient dialysis centers and the THR Harris Hospital acute dialysis program, providing comprehensive oversight of dialysis care across the Fort Worth community. Patients seeking a board-certified nephrologist in Fort Worth with deep expertise in chronic kidney disease management, dialysis, and interventional kidney procedures trust Dr. Afolabi for compassionate, evidence-based care. He was voted Physician of the Year in 2018 at Texas Health Resources Fort Worth and has been recognized as a Fort Worth Top Doc by his peers across multiple years beginning in 2006 — most recently in 2026 by Fort Worth Magazine.

Education: Medical School: Nigeria | Residency: Internal Medicine | Fellowship: Nephrology

Certifications: American Society of Nephrology (ASN), Fellow of the American Society of Nephrology (FASN)

Services: Nephrology , Vascular Surgery

Dr. Samatha Chandupatla, MD

Dr. Samatha Chandupatla is a co-founding partner of Fort Worth Renal Group and a highly experienced board-certified nephrologist who has been delivering kidney care to patients in the Fort Worth area since 2005. She completed her Internal Medicine residency at Wayne State University and her Nephrology fellowship at Louisiana State University, building a strong foundation in both general nephrology and clinical research. Dr. Chandupatla specializes in the diagnosis and management of chronic kidney disease, kidney stones, high blood pressure, and glomerulonephritis. She has served as medical director for the USRC Dialysis Center in Central Fort Worth for more than nine years and maintains an active role in clinical research, contributing to advancements in kidney care. At JPS Hospital, she is dedicated to training resident physicians and sharing her extensive nephrology expertise with the next generation of doctors. Dr. Chandupatla has been recognized as a Fort Worth Top Doc by her peers across multiple years, most recently in 2026 by Fort Worth Magazine. She is known for her thorough, educational approach to patient care. She takes the time to explain conditions, treatment options, and preventive strategies so patients and their families feel informed and empowered throughout their kidney health journey. Patients in Fort Worth searching for a compassionate, experienced kidney doctor who prioritizes communication and education consistently choose Dr. Chandupatla.

Education: Medical School: India | Residency: Internal Medicine, Wayne State University | Fellowship: Nephrology, Louisiana State University

Certifications: Internal Medicine, Nephrology (ABIM) , American Society of Nephrology (ASN)

Services: General Nephrology

Dr. Geethanjali Ramamurthy, MD

Dr. Geethanjali Ramamurthy is a co-founding partner and vice president of Fort Worth Renal Group, bringing more than two decades of nephrology expertise to patients throughout the Dallas-Fort Worth area. After graduating at the top of her medical school class in India, she completed her Internal Medicine residency at Wayne State University and her Nephrology fellowship at Henry Ford Hospital, both in Detroit, Michigan, finishing both programs in 2003. Board certified in both Internal Medicine and Nephrology, Dr. Ramamurthy focuses on diagnosing and treating glomerulonephritis, chronic kidney disease, kidney stones, and providing compassionate care to patients on dialysis. She has been actively involved in clinical research throughout her career and is passionate about medical education, having mentored and taught resident students at JPS Hospital for more than twelve years. Patients describe Dr. Ramamurthy as one of the most caring, approachable physicians they have ever encountered. She is known for her warm, motherly bedside manner and her dedication to discussing medical conditions and health improvement strategies in detail. Patients and referring physicians in Fort Worth looking for a nephrologist who combines deep medical knowledge with compassionate, relationship-centered care turn to Dr. Ramamurthy. Dr. Ramamurthy has been recognized as a Fort Worth Top Doc by her peers across multiple years, most recently in 2026 by Fort Worth Magazine.

Education: Medical School: India (Top of Class) | Residency: Internal Medicine, Wayne State University, Detroit, MI | Fellowship: Nephrology, Henry Ford Hospital, Detroit, MI

Certifications: Board certified in Internal Medicine, Nephrology (ABIM) , American Society of Nephrology (ASN)

Dr. Patrick Nef, MD

Dr. Patrick Nef is a board-certified nephrologist and AST Certified Transplant Nephrologist at Fort Worth Renal Group who has been caring for patients in the Dallas-Fort Worth area since 2008. He brings an exceptional educational pedigree, having completed medical school with honors and at the top of his class at the Royal College of Surgeons in Ireland, followed by an Internal Medicine residency at the world-renowned Cleveland Clinic and a Nephrology fellowship with an additional year of Transplant Nephrology training at Mount Sinai School of Medicine in New York. Dr. Nef also holds a Master of Science in Clinical Research from Mount Sinai School of Medicine and New York University, giving him a research-driven approach to clinical practice. His primary clinical interest is kidney transplantation, and he works closely with transplant programs throughout the Dallas-Fort Worth region to guide patients through every phase of the transplant journey—from evaluation and preparation to long-term post-transplant monitoring. With practicing privileges at Texas Health Resources hospitals, HCA Medical City facilities, and Baylor Scott & White All Saints Medical Center, Dr. Nef provides accessible kidney care across the Fort Worth area. Patients praise him for his punctuality, thoroughness, and ability to clearly explain complex kidney conditions. For patients in Fort Worth seeking an expert in kidney transplant care or comprehensive nephrology, Dr. Nef offers the specialized training and clinical depth that makes a meaningful difference. Dr. Nef was named a 2026 Top Doctor in Nephrology by Fort Worth Magazine, recognizing his clinical expertise and long-standing commitment to advancing kidney and transplant care across the Dallas-Fort Worth region.

Education: Medical School Royal College of Surgeons in Ireland, Residency Internal Medicine, Cleveland Clinic, Fellowship Nephrology, Transplant Nephrology, Mount Sinai School of Medicine

Certifications: Board Certified Internal Medicine, Nephrology (ABIM); AST Certified Transplant Nephrologist , American Society of Transplantation (AST), American Society of Nephrology (ASN)

Dr. Pardeep Ratnani, DO

Dr. Pardeep Ratnani is a nephrologist with Fort Worth Renal Group, board-certified in both internal medicine and nephrology, who cares for patients across the full spectrum of kidney conditions. He completed his Bachelor of Science in physiology and biochemistry at the University of Toronto before earning his Doctor of Osteopathic Medicine degree at Touro College of Osteopathic Medicine in New York. He completed his Internal Medicine Residency at Advocate Lutheran General Hospital in Park Ridge, Illinois, and his Nephrology Fellowship at Baylor College of Medicine in Houston, where his academic work centered on glomerular disease and patient education regarding chronic kidney disease. An active member of the American Society of Nephrology, the American Society of Diagnostic and Interventional Nephrology, and the American College of Physicians, Dr. Ratnani has strong clinical interests in glomerular disease, kidney stones, and cardiorenal syndrome. With specialized training in interventional nephrology, he is deeply committed to the management and maintenance of dialysis access, recognizing it as a critical lifeline for his patients. Fluent in Urdu, Sindhi, and Hindi, he is dedicated to helping a diverse range of Fort Worth patients fully understand their care. His practice philosophy focuses on transparency and education—ensuring his patients clearly see what is happening with their health, what it means, and what steps come next.

Education: Doctor of Osteopathic Medicine degree at Touro College of Osteopathic Medicine in New York

Certifications: American Society of Nephrology , American Society of Diagnostic and Interventional Nephrology , American College of Physicians

Dr. Renee A. Ellis, MD

Renee A. Ellis, M.D. is a compassionate and highly experienced nephrologist who has cared for patients in the Columbia, South Carolina community for more than 15 years before joining Fort Worth Renal Group in 2026. She believes in building strong, trusting relationships with her patients and helping them navigate every stage of kidney health—from early prevention to advanced treatment. After earning her medical degree from Jefferson Medical College, Dr. Ellis completed her residency and nephrology training at Rush University Medical Center, followed by advanced interventional nephrology work at the University of Miami and specialized training at Emory University. Her extensive background allows her to provide expert care in hypertension, chronic kidney disease, dialysis access, and complex vascular issues. Dr. Ellis is triple board‑certified, ASDIN‑certified in endovascular procedures, and has published widely in respected nephrology journals. She has also been recognized nationally for her research on hypertension and vascular health. Dr. Ellis is known for her thoughtful, patient‑centered approach. She has helped develop innovative multidisciplinary programs, including a collaborative LVAD clinic for heart failure patients.

Education: Medical degree from Jefferson Medical College

Dr. Koshy Abraham, MD

Born in Waynesboro, Virginia, Dr. Abraham grew up in Nederland, Texas and started his passion for caring when he was young, influenced by an uncle in India who was a pediatrician. His amazing career in medicine has taken him from Virginia to Texas, to Florida, South Carolina and then he finally landed back in Texas with Fort Worth Renal Group. Dr. Abraham always goes the extra mile with his genuine caring demeanor and earns the trust of his patients and their families. His interest in Chronic Kidney Disease, transplantation and helping his patients plan ahead while working to slow the progression of kidney disease are what sets him apart as an excellent physician. Dr. Abraham received his undergraduate Bachelor of Science in Chemistry from Lamar University in Beaumont, Texas. He attended graduate school at the University of Texas Health Science Center in Houston graduating in 1992 and went on to obtain his MBA from Florida Tech University in 2014. After his internship Birmingham, Alabama, his completed his residency in Internal Medicine in 1995 at Baptist Health System in Birmingham. He was Chief Resident from 1995-1996. He finished his Nephrology and Transplant Fellowship at the University of Florida College of Medicine in Gainesville, Florida in 1998. His certifications include: American Board of Internal Medicine, ABIM-Nephrology, AST in Transplant Nephrology, NBPAS Certification for Internal Medicine and Nephrology. He is a member of the American Society of Nephrology, National Kidney Foundation, and the American Society of Transplantation. He has also been awarded many honors including Alpha Omega Alpha, Phi Kappa Phi, Joint Venture Council Member for Fresenius Medical Care, and the Medical Disciplinary Commission of the South Carolina Board of Medical Examiners). He has many publications and was one of the primary developers of the information system Nephrologixx. His interests in the nephrology field include transplantation, managing patients on dialysis, and caring for patients in the acute care setting. He loves his patients. Dr. Abraham works hard to do the right thing for his patients, family, and friends. He enjoys music listening to some of his favorite bands: ELO, Asia, Foreigner to name a few. In addition to traveling with his family to some of their favorite beaches, when he has spare time, he likes to hit the gym, watch the kids sporting events and watching movies. The highlight of his day is spending time with his wife and 2 sons, playing with their dog Karma, and attending church.

Education: BA in Chemistry from Lamar University , MBA from Florida Tech University

Dr. Raju Patil, MD

Dr. Raju Patil received his medical degree from Bangalore Medical College in Bangalore, India in 2002. After a brief work as research Fellow at National Institute of Mental Health and Neurosciences, Bangalore, India, he continued on to receive a Masters degree in Public Health from the University of Illinois in Springfield, IL in 2006. He completed his internal medicine residency program in Urbana, IL in 2008. He later pursued a fellowship in nephrology, including an ultrasound fellowship at Emory University, Atlanta, GA, which he completed in the summer of 2018. He was the Chief Fellow from 2017-2018 during his fellowship at Emory University. He is board certified in Internal Medicine. His areas of interest in Nephrology include hypertension management, Ultrasound Imaging, chronic kidney disease management, caring for patients on dialysis and managing patients in the acute care setting. Dr. Patil was recognized as a 2026 Top Doctor in Nephrology by Fort Worth Magazine, a peer-nominated distinction reflecting his dedication to improving kidney care outcomes for patients across Fort Worth and North Texas. Dr. Patil has a passion for advocacy and has been actively involved in the advocacy for High Skilled Employee Immigration since 2011 and also in regards to medical profession with multiple meetings with Elected representatives for the cause both locally and at Washington, DC. In his free time, he likes to spend time with his family, play badminton, cook and travel. Other interests include photography, movies, history, politics and law making.

Dr. Michael Babigumira, MD

Dr. Michael Babigumira completed his Nephrology Fellowship at the University of Texas Health Science Center at San Antonio, following an Internal Medicine Residency at the Icahn School of Medicine at Mount Sinai / Queens Hospital Center. His journey in healthcare started at Mbarara University of Science and Technology in Uganda, where he attained a Bachelor of Medicine and Bachelor of Surgery (MBChB) degree. He went on to spend several years in Kansas, where he practiced Nephrology, before joining Fort Worth Renal Group; bringing with him a wealth of experience. Driven by the belief that the patient always comes first, he prioritizes personalized and compassionate care, ensuring each patient’s unique needs are met. Dr. Babigumira is ABIM board certified in Internal Medicine and Nephrology. He is a member of the American Society of Nephrology (ASN and the American College of Physicians (ACP). His clinical interests in Nephrology include Hypertension, Glomerulonephritis, Chronic Kidney Disease, Nephrolithiasis, Dialysis, and Transplantation. Dr. Babigumira was named a 2026 Top Doctor in Nephrology by Fort Worth Magazine, a peer-nominated recognition reflecting his commitment to compassionate, patient-centered kidney care in the Fort Worth community. He grew up in a medical household, drawing inspiration from his father and brothers, also physicians, to pursue his career in medicine. Outside the clinic, he enjoys spending quality time with family, exploring new destinations through travel, reading, watching sports and going to the movies. He is a lifelong Arsenal fan.

Certifications: ABIM board certified in Internal Medicine and Nephrology , American Society of Nephrology , American College of Physicians

Services: Nephrology include Hypertension , Glomerulonephritis , Chronic Kidney Disease , Nephrolithiasis , Dialysis , Kidney Transplantation

Dr. Tudor Gradinariu, DO

Dr. Tudor Gradinariu’s journey in medicine began at a young age. Born into a family of doctors and medical providers he was immersed in the language and science of caring for people. An only child he moved from his family’s home in Romania to Lyon, France at 5 years old then immigrated with his parents to Colorado Springs at age 10 where he grew up in the beautiful Rockies playing near clear rushing streams in the crisp mountain air. Dr. Gradinariu (pronounced Gra-din-a-riu) earned his Bachelor of Arts in Biochemistry and Molecular Biology (with minors in French and Psychology) from Boston University where he was in the honors program. After graduating, he went on to attend medical school at Rocky Vista University from 2012-2016 and then to Palmetto General Hospital for training in Internal Medicine in Hialeah, Florida from 2016-2019. In 2021 he joined Fort Worth Renal Group after finishing his fellowship at Henry Ford Hospital Nephrology in Detroit, Michigan. His article Sodium-Based Osmotherapy in Continuous Renal Replacement Therapy: A Mathematical Approach appeared in Kidney360 in February 2020. His interests include CRRT, Dysnatremias, Hepatorenal Syndrome, and Dialysis Access Management. He is board certified in ABIM for Internal Medicine and belongs to the AMA, AOA, ACP, and ASN. Dr. Gradinariu was named a 2026 Top Doctor in Nephrology by Fort Worth Magazine, recognizing his clinical contributions and commitment to delivering evidence-based, patient-centered nephrology care in Fort Worth. Dr. Gradinariu believes in providing energy, leadership and excellence to modern medical care. His passion is taking care of nephrology patients. In his spare time, he enjoys international travel, visiting micro-breweries, working out and is our very own speed demon as he loves alpine skiing.

Education: BA from Boston University

Certifications: Board certified in ABIM for Internal Medicine , American Medical Association

Services: Nephrology , General Nephrology , Dialysis

Lihn "Mimi" Ho, MSN, APRN, AGACNP-BC

Mimi Ho is an Adult-Gerontology Acute Care Nurse Practitioner (AGACNP-BC) with Fort Worth Renal Group, where she has cared for patients with kidney disease since August 2022. She earned her Bachelor of Science in Nursing from the University of Texas at Arlington and her Master of Science in Nursing in Adult-Gerontology Acute Care from Texas Tech University Health Sciences Center. Before joining Fort Worth Renal Group, Mimi spent five years in critical care nursing across Fort Worth, including the Cardiovascular ICU at Baylor All Saints and Cardiac Progressive Care at Texas Health Harris Methodist, caring for patients managing heart failure, multi-organ failure, and continuous renal replacement therapy (CRRT, a form of dialysis used in critical care). Mimi is available to see patients in our OP clinic setting at our Main FWRG campus. Board certified by the American Nurses Credentialing Center, Mimi is a member of the American Association of Critical-Care Nurses and Sigma Theta Tau International. Her acute-care training is particularly valuable for Fort Worth Renal Group patients navigating chronic kidney disease (CKD) in and around the hospital, helping them understand what is happening, what it means, and what comes next, close to home in Fort Worth.

Darrica Davis

Darrica Davis is a Nurse Practitioner originally from Kansas City. She began her career as a nurse in various dialysis clinics throughout the Midwest. After completing her undergraduate nursing program at Grand Canyon University, she earned her Master of Science in Nursing from MidAmerica Nazarene University in 2024, specializing as an Adult Gerontology Primary Care Nurse Practitioner. Following graduation, she continued her work in nephrology before joining Fort Worth Renal Group. Darrica is committed to delivering safe, competent care and believes that nurse practitioners play a vital role in bridging the gap between patient-focused care, education, and real-world experience. In her spare time, Darrica enjoys spending time with her family, skating, and attending church.

Millicent Osamba

Millicent Osamba is a Family Nurse Practitioner with Fort Worth Renal Group, where she has cared for patients with kidney disease since April 2022. She earned her Bachelor of Science in Nursing from Western Adventist University in Keene, Texas, and her Master of Science in Nursing from Walden University. Her nephrology background reaches back more than a decade, including acute dialysis nursing roles across North Texas at Baylor Scott & White, Texas Health Resources, Baylor University Medical Center, and other regional dialysis centers, providing inpatient dialysis care for patients with acute kidney injury and end-stage kidney disease. A licensed Advanced Practice Registered Nurse, Millicent rounds with the Fort Worth Renal Group team in the outpatient dialysis unit and follows patients with chronic kidney disease (CKD) and post-kidney-transplant needs in the clinic setting. Her experience across the dialysis continuum is rooted in helping patients understand what is happening with their kidneys, what it means for daily life, and what comes next.

Education: Bachelor of Science in Nursing from Western Adventist University , Master of Science in Nursing from Walden University

Maritza Seidel

Maritza Seidel is an Adult-Gerontology Acute Care Nurse Practitioner (AGACNP-BC) joining Fort Worth Renal Group in December 2021, where she partners with the renal care team to evaluate and manage kidney conditions across the continuum of care. She earned her Associate Degree in Nursing from Fayetteville Technical Community College, her Bachelor of Science in Nursing cum laude, and her Master of Science in Nursing in Adult-Gerontology Acute Care at Texas Woman's University. Maritza brings 12 years of clinical nursing experience to her role, including seven years in the surgical trauma intensive care unit (STICU) at Texas Health Harris Methodist Fort Worth and five years in cardiac step-down nursing. A Critical Care Registered Nurse (CCRN) with ACLS and BLS certifications, Maritza is bilingual in English and Spanish, helping more Fort Worth patients understand their care in their own language. Her critical-care foundation supports patients managing kidney disease at every stage, focused on the whole picture, not just the lab results, and on what happens next.

Education: Associate Degree in Nursing from Fayetteville Technical Community College , achelor of Science in Nursing from Texas Woman's University , Master of Science in Nursing in Adult-Gerontology Acute Care, Texas Woman's University

Certifications: Critical Care Registered Nurse (CCRN)