Arnold Silva, M.D., Ph.D.
As a principal investigator for the Boise Kidney & Hypertension Institute, Dr. Arnold Silva brings more than 30 years of clinical research and patient care experience to F1RST Up®.
Dr. Silva is the director of the Home Hemodialysis and Peritoneal Dialysis programs at Boise Kidney & Hypertension Institute. He received his bachelor’s and master’s degrees in biology from California State University in Fresno, Calif., and his Ph.D. from the University of Arizona in Tucson, Arizona. Dr. Silva received his M.D. from the University of Arizona, followed by residency training in internal medicine and a nephrology fellowship at the University of Arizona affiliated hospitals.
Twice awarded for excellence in teaching at the University of Arizona, Dr. Silva served as a clinical assistant professor of medicine and also taught in many areas of biology, biochemistry and physiology for California State University and the University of California. He has been very active as an independent investigator in the basic sciences and clinical research throughout his career. Dr. Silva acts as an advisor, national leader and regional mentor on many studies, is a regular high enroller and supports the F1RST Up program with his experience and expertise in the field.
Jill Meyer, M.D., FACP, FASN
Fluent in English and Spanish, Dr. Jill Meyer easily communicates with a diverse population of patients and research subjects in the San Diego area. Experienced in a wide range of conditions, Dr. Meyer brings her skill to renal research areas including kidney failure, kidney infection, polycystic kidney disease and renal artery stenosis.
In addition to her nephrology experience, Dr. Meyer provides F1RST Up® with language versatility to form stronger patient connections that often can otherwise be hindered by language barriers.
In practice as a nephrology specialist for more than 16 years, Dr. Meyer is associated with health care institutions in the area including Sharp Chula Vista Medical Center, Sharp Coronado and Scripps Chula Vista. She earned her medical degree from the American University of the Caribbean School of Medicine in Coral Gables, Fla., in 1996.
Dylan Steer, M.D.
Dr. Dylan Steer has an enduring interest in the care of patients with chronic kidney disease, including end stage kidney disease and kidney transplantation. He serves as president and CEO of Balboa Nephrology Medical Group in San Diego, where he leads a group of 45 nephrologists who are focused on consistently delivering superior care to every patient with kidney disease.
Dr. Steer has conducted a number of clinical trials in ESRD. His interest is in bringing novel therapies and new technologies to improve the care and quality of life for patients with kidney disease.
He earned his medical degree at Duke University and completed a residency in internal medicine at Duke University Hospital. He went on to complete a fellowship in nephrology and hypertension at the University of California at San Diego. He is affiliated with several hospitals in the region, including Scripps Memorial Hospital in La Jolla and Sharp Memorial Hospital in San Diego.
Angela Marie Riley, M.D.
Treating kidney patients and performing research for more than 16 years, Dr. Angela Riley is a well-respected nephrologist in the Columbus, Miss. area. She is a constant scholar and has co-authored an article which appeared in the American Journal of Medical Science titled Favorable outcome after Aggressive Treatment of Infection in a Diabetic Patient with MRSA-Related IgA nephropathy. Dr. Riley’s passion for volunteering has led her to provide health screenings and education for various community organizations.
Dr. Riley earned her M.D. from the University of Tennessee College of Medicine in Memphis, which is where she also completed her internship and residency as well as a fellowship in nephrology. She is board certified in internal medicine and nephrology by the American Board of Internal Medicine. She has also been certified in CMS Meaningful Use Stage 1.
In addition to her affiliation with Nephrology Associates, Dr. Riley is affiliated with several leading hospitals, including Baptist Memorial Hospital, Golden Triangle, Greenwood Leflore Hospital, OCH Regional Medical Center and the University of Mississippi Medical Center Grenada.
Thomas Wooldridge, M.D.
With more than 45 years of experience in internal medicine and nephrology, Dr. Tom Wooldridge has been a witness to many significant advancements in the study and treatment of chronic kidney disease, end stage renal disease and other renal disorders.
Respected by his colleagues for both clinical research and clinical care, Dr. Woolridge is board certified in internal medicine and nephrology. He practices in Tupelo, Miss., and is affiliated with several hospitals in the area, including the North Mississippi Medical Center and North Mississippi State Hospital, in addition to his association with Nephrology and Hypertension Associates.
A graduate of the University of Mississippi School of Medicine, Dr. Wooldridge completed his internship and residency at the University of Mississippi Medical Center.
Diogo Belo, M.D.
A practicing nephrologist for more than 40 years, Dr. Diogo Belo is an experienced researcher with a diverse patient population in and around San Diego. His command of English, Spanish and Portuguese helps facilitate communications with patients involved in research studies.
Board certified in both internal medicine and nephrology, Dr. Belo is the Principal Investigator for the California Institute of Renal Research, with seven locations servicing the greater San Diego area. He is also affiliated with Paradise Valley Hospital, Scripps Mercy Hospital, Sharp Chula Vista Medical Center, Sharp Coronado Hospital & Healthcare Center and Sharp Memorial Hospital.
A 1975 graduate of Universidad Federal De Pernambuco in Recife, Brazil, Dr. Belo completed his internship and residency at Griffin Hospital in Derby, Conn., and a fellowship in nephrology at the University of Connecticut Health Center, John Dempsey Hospital.
Donovan Polack, M.D.
A graduate of the Weill Cornell Medical College at Cornell University, Dr. Donovan Polack has had a career in internal medicine and nephrology research and in the treatment of kidney disease and related conditions.
Practicing in the St. Louis region, Dr. Polack is affiliated with Alton Memorial Hospital, Christian Hospital, Missouri Baptist Medical Center and De Paul Hospital among other institutions. In addition, Dr. Polack’s primary practice recently joined with Fresenius Kidney Care to form St. Louis Kidney Care.
Dr. Polack completed his residency in internal medicine at Emory University Hospital in Atlanta and a fellowship at Wilford Hall Medical Center, a U.S. Air Force medical treatment facility located on the grounds of San Antonio’s Lackland Air Force Base. He is certified by the American Board of Internal Medicine in internal medicine and nephrology.
Ramin Berenji, M.D.
As an inventor, educator and scholar, Dr. Ramin Berenji is constantly looking to advance medical technologies while keeping his patients in mind. With an education at the world’s top medical institutions and more than 29 years of experience, Dr. Berenji is highly regarded for his expertise in nephrology and clinical research. He is affiliated with El Centro Regional Medical Center and Pioneers Memorial Healthcare District in California.
Dr. Berenji earned his M.D. from the University of Hamburg School of Medicine in Hamburg, Germany, and completed his internship and residency at Good Samaritan Hospital, Johns Hopkins School of Medicine. He also completed a nephrology fellowship at Stanford University in Palo Alto, Calif.
Dr. Berenji is a fellow of both the American College of Physicians and the American Society of Nephrologists and has been recognized by both organizations for his continued professional development, scholarly activities and institutional and community-based teaching. He is certified by the American Board of Internal Medicine in internal medicine and just renewed his board certification in nephrology. In 2017, Dr. Berenji filed a patent on an intravenous sensing system, demonstrating his dedication to advancing medical capabilities and improving processes within the field.
Mark Boiskin, M.D.
A native of South Africa, Dr. Mark Boiskin brings an international perspective to his work in nephrology and kidney research. His ability to speak Afrikaans as well as English offers an additional dynamic to the F1RST Up® team. Furthermore, his dedication to advancing renal research aids his practice as well as F1RST Up with well-prepared source documentation, secure record retention and successful enrollment.
Dr. Boiskin graduated from the University of Stellenbosch Medical School in Cape Town, South Africa, and then completed an internship at Tygerberg Hospital in Cape Province, South Africa, before accepting a two-year general practice position at Moose Jaw Clinic in Saskatchewan, Canada. Dr. Boiskin completed his residency in internal medicine at the University of Alberta, Canada, as well as a nephrology fellowship at the University of California in San Diego.
Certified in both internal medicine and nephrology by the American Board of Internal Medicine, Dr. Boiskin has served as Chairman of Pharmacy and Therapeutics and Chairman of Medicine at the Scripps Memorial Hospital in La Jolla, and he is currently on the medical staff at the Scripps hospitals in both La Jolla and Encinitas. Dr. Boiskin is also active in educational outreach, having given presentations to patients on the latest treatments in nephrology and co-authoring a study on the nephrotoxicity of ACE-inhibitors.
Ahmed Aqeel, M.D.
As one of the principal investigators for the Nephrology Center at Paragon Health, P.C., Dr. Aqeel brings 30 years of clinical experience and nephrology expertise to F1RST Up®. Serving patients throughout Southwest Michigan, Dr. Aqeel is also a clinical specialist in hypertension, treating renal hyperparathyroidism and hypertensive chronic kidney disease.
Dr. Ahmed Aqeel earned his medical degree at Allama Iqbal Medical College in Lahore, Pakistan. He completed his residency at the University of North Dakota and a nephrology fellowship at Wayne State University as well as earning a Masters in Public Health from the University of Wales in the United Kingdom.
Previously, Dr. Aqeel served as medical director of Fresenius Medical Care Sturgis (Michigan) and medical director of the FKC Kalamazoo Home Program.
Marcus Britton, M.D.
Dr. Marcus Britton is an experienced investigator in a wide range of conditions. His research has covered anemia, secondary hyperparathyroidism, hypo- and hyper-phosphatemia, atrial fibrillation, wound healing in uremic calciphylaxis, catheter-related infections, fistulas and pruritis in hemodialysis and CKD patients.
Dr. Britton has been in practice as a nephrology specialist for more than 12 years. He earned his medical degree and did his residency at the University of Mississippi. He then completed a nephrology fellowship at the University of Texas Health Center in Houston.
Michael W. Roppolo, M.D.
Dr. Roppolo has over 30 years of experience as a nephrology clinical trial investigator at Renal Associates of Baton Rouge, LLC.
Dr. Roppolo earned his medical degree from Louisiana State University School of Medicine in Shreveport. He completed his internship and residency in internal medicine and fellowship in nephrology at the University of Arkansas at Little Rock.
Dr. Roppolo is board-certified in both internal medicine and nephrology. He is a member of the Louisiana State Medical Society, Renal Physicians Association and is a fellow of the American College of Physicians. His areas of interest are home therapies, fluid and electrolytes.
C. Peter Luscy, M.D.
Dr. Luscy has over 20 years of experience as a nephrology clinical trial investigator at Renal Associates of Baton Rouge, LLC.
Dr. Luscy earned his medical degree from Louisiana State University School of Medicine in New Orleans. He completed his internship and residency at LSU Medical Center in Baton Rouge, and his nephrology training at the University of Alabama at Birmingham.
Dr. Luscy is board-certified in internal medicine and nephrology. He is a fellow of the American College of Physicians and a member of the American Society of Diagnostic and Interventional Nephrology and Renal Physicians Association. His areas of interest are research, dialysis access, home hemodialysis and teaching.
Damodar Kumbala, M.D.
Dr. Kumbala has been a clinical trial investigator for 10 years and with Renal Associates of Baton Rouge, LLC for three years.
Dr. Kumbala received his Bachelor of Medicine and Bachelor of Surgery from B.M. Patil Medical College in India and completed his internal medicine residency at Jewish Hospital of Cincinnati. He then pursued nephrology training at Tulane University in New Orleans where he served as the chief nephrology fellow during his training.
Dr. Kumbala is board-certified in internal medicine and nephrology. He is also certified in hemodialysis vascular access procedures by the American Society of Diagnostic and Interventional Nephrology. Dr. Kumbala is a member of the American Society of Nephrology and the American Society of Diagnostic and Interventional Nephrology. He has served as assistant professor of clinical medicine at Tulane University School of Medicine and senior lecturer at University of Queensland, Brisbane, Australia. His areas of interest are vascular access and ICU nephrology.
Carlos Mercado, M.D.
Dr. Mercado received his medical degree from the Universidad Del Norte School of Medicine located in Colombia. In the United States, he completed his internal medicine residency from Mount Sinai Medical Center in Miami Beach, Fla. Dr. Mercado served his nephrology and hypertension fellowship at the University of Miami-Jackson Memorial in Miami. He is board certified by the American Board of Internal Medicine for internal medicine, clinical hypertension, and nephrology.
Carlos Leon-Forero, M.D.
Carlos Leon, M.D., completed his internal medicine residency at Rochester General Hospital/University of Rochester and Clinical and Interventional Nephrology at the Division of Nephrology of the Miller’s School of Medicine/ University of Miami. He has served as director of the Southern Utah Kidney and Hypertension Center Interventional Nephrology program in St. George, Utah, since March 2011.
Dr. Leon’s interests include comprehensive care of renal patients, applying state-of-the-art medicine to this patient population, and serving and maintaining the vascular accesses for patients in need.
Andy Patchett, D.O.
Andrew Patchett, D.O., was born in Salt Lake City and raised in Henderson, Nev. He completed his undergraduate bachelor’s degree in Zoology at Idaho State University in Pocatello, Idaho. Andy, with his wife and son, moved to Arizona where he attended medical school at Midwestern University – AZCOM in Glendale, Ariz., and is part of the National Osteopathic Medical Honor Society – Sigma Sigma Phi. He completed his internal medicine residency and nephrology fellowship at Oklahoma State University Medical Center in Tulsa, Okla., where he was voted Fellow of the Year in 2016.
Greg Larsen, N.P.
Greg Larsen, N.P., joined Southern Utah Kidney and Hypertension in 2010. He attended Dixie State University in St. George, Utah, and Southern Utah University in Cedar City, Utah, for his undergraduate studies, and received his master’s in nursing as a family nurse practitioner from the University of Utah in Salt Lake City. Greg is board certified in nephrology as a nurse practitioner through the Nephrology Nursing Certification Commission.
Samuel A. Kantor, M.D.
Dr. Kantor completed his postgraduate medical education at MCP/Hahnemann University in Philadelphia. He then completed a fellowship in nephrology at Drexel University College of Medicine in Philadelphia, where he served as chief nephrology fellow.
Dr. Kantor served as an associate clinical professor of internal medicine at the University of Alabama in Tuscaloosa, Ala. He was voted top nephrologist by VEGAS INC magazine in 2015 and 2016.
In addition to practicing medicine, Dr. Kantor has an interest in clinical research and currently serves as a principal investigator in several Phase III clinical studies being conducted at Nevada Kidney Disease & Hypertension Centers.
Jeffrey Ryu, M.D.
After finishing medical school at the Medical College of Wisconsin, Dr. Ryu completed his internal medicine residency, where he was appointed to be the chief resident, and his subspecialty training in nephrology at the University of California Irvine Medical Center. He started his practice in California in 2001, then moved to Las Vegas, Nev., in 2005.
Dr. Ryu started with clinical research in 2009 as a principal investigator and participated in several Phase II-III trials, both CKD and ESRD.
Outside work, Dr. Ryu loves to travel with his family, and in his free time, enjoys playing golf.
Than Naing Oo, M.D.
Dr. Oo has been a principal investigator at Nephrology Center, PC, since 2003. He completed his residency at Albert Einstein College of Medicine in New York City in 1996. Following that, he was an internist at Lapeer Regional Hospital in Michigan until 1999 prior to completing his nephrology fellowship at the University of Minnesota in 2001.
Dr. Oo’s areas of clinical trial research experience include atrial fibrillation as well as the following areas of nephrology expertise: end stage renal disease, chronic kidney disease, secondary hyperparathyroidism, hyperphosphatemia, anemia, uremic pruritis and autosomal dominant polycystic kidney disease.
Prince Jit Sidhu, M.D.
Dr. Sidhu has been a principal investigator at Nephrology Center, PC, since 2002. He received his M.D. from Government Medical College in Punjab, India, in 1993. In 1998, he completed his internal medicine residency at Wayne State University in Detroit, where he also completed his nephrology fellowship in 2002.
Dr. Sidhu’s areas of clinical trial research experience include atrial fibrillation as well as the following areas of nephrology expertise: end stage renal disease, chronic kidney disease, secondary hyperparathyroidism, hyperphosphatemia, anemia, uremic pruritis and autosomal dominant polycystic kidney disease.
Melissa Yanover, M.D.
As a principal investigator, Dr. Yanover is bringing new therapeutics to Kidney Associates of Colorado and Fresenius Medical Care dialysis units in Denver. Patients will have an opportunity to participate in clinical research trials at all stages of chronic kidney disease.
Melissa Yanover founded Kidney Associates of Colorado in 2007. Prior to that, Dr. Yanover practiced with a large nephrology group in Lakewood, Colorado, for 25 years. She earned her M.D. from the University of Pittsburgh School of Medicine with Alpha Omega Alpha honors. Dr. Yanover continued her post-graduate training at Michael Reese Hospital and Medical Center in Chicago before completing her nephrology fellowship at the University of Colorado Health Sciences Center. Melissa is the medical director of two Fresenius Medical Center dialysis clinics and a hospital acute dialysis program. Her colleagues have recognized her as a 5280 Top Doctor several times.
Dr. Yanover’s goal is to develop strong relationships with her patients and help them understand and take control of their kidney health. She believes in the team approach to patient care with the patient at the center of the team.
Maria-Gabriela Velez, M.D., Ph.D.
As a principal and sub investigator who is bilingual in English and Spanish for Kidney Associates of Colorado, Dr. Velez will be able to offer clinical research to patients in all stages of chronic kidney disease in the Denver, Colorado, area.
Maria-Gabriela joined Kidney Associates of Colorado in 2015 and is a trained physician scientist with a special interest in diabetic kidney disease and inflammatory/autoimmune diseases of the kidney. She completed her medical training and obtained her doctorate in immunology at the University of Colorado School of Medicine. Then she completed her training in internal medicine and her fellowship in nephrology at Stanford University.
Missing the Rocky Mountains, Dr. Velez returned to Colorado to join Kidney Associates of Colorado, and uses her extensive medical experience to provide comprehensive treatment options and dialysis education to the Hispanic community. Dr. Velez has volunteered and worked in community health clinics and has been recognized for helping increase access to health care.
Rachita Prakash, M.D.
As a principal and sub investigator for Kidney Associates of Colorado, Dr. Prakash will bring a new element of care to patients by offering them the opportunity to participate in clinical research trials, which will further the science for improved care of chronic kidney disease for the future.
Rachita joined Kidney Associates of Colorado in 2017 after moving to Denver from the East Coast. Dr. Prakash was previously practicing nephrology in Northern and West Virginia and prior to that was in private practice in the Greater Pittsburgh area until 2013. She completed her residency in internal medicine at Robert Packer Hospital/Guthrie Clinic in Northern Pennsylvania where she was chief resident and was awarded the Stanley Conklin Award for research. Rachita went on to train in nephrology at the University of Pittsburgh Medical Center and graduated in 2012. She is board certified in internal medicine and nephrology.
Dr. Prakash has a keen interest in evaluation and management of acute kidney failure, management of chronic kidney disease, diabetic kidney disease and management of hypertension with research in patient outcomes on peritoneal dialysis.