612 Roxbury Rd.
Rockford, IL. 61107
815-227-8300
Our Mission.......
To Serve Nephrology Patients
RNA Cares for your Kidneys
Our Physicians
A founding member of RNA with over 30 years experience, Dr. Maynard is Board Certified in Nephrology and Internal Medicine. He completed his Fellowship and Internship at Henry Ford Hospital in Detroit, MI. and received his Medical Degree from University of Illinois, Chicago. He has advanced training in Interventional Nephrology and Peritoneal Dialysis Catheter Insertion. He is a member of the RNA Managing Board and Medical Director of RNA Dialysis Access Services and the Freeport Driftwood Dialysis Units. In addition, Dr Maynard is Clinical Associate Professor of Medicine at U of I College of Medicine in Rockford and is on staff at 12 area hospitals.
Dr. John Maynard
With over 30 years experience and a co-founder of RNA, Dr. Sweeney is Board Certified in Nephrology and Internal Medicine. He received his Bachelor of Science degree from University of Notre Dame, Indiana. He completed his Fellowship at University of Minnesota and his Residency and Internship at University of Illinois, Chicago and received his Medical Degree from University of Illinois, Chicago. Dr. Sweeney is a member of the RNA Managing Board and the author of several publications on Nephrology and Hypertension. In addition, he is the Medical Director of the Davita Dixon and Churchview Dialysis Units and is on staff at 10 area hospitals.
Dr. Charles Sweeney
As a co-founder of RNA with over 30 years experience, Dr. Stim is Board Certified in Nephrology and Internal Medicine. He received his Bachelor of Science degree at Union College in Schenectady, NY. He completed his Fellowship, Residency and Internship at University of Illinois, Chicago and received his Medical Degree from University of Illinois, Chicago. Dr. Stim is a member of the RNA Managing Board and has been Clinical Assistant Professor of Medicine at U of I College of Medicine in Rockford for over 20 years. In addition, he is Medical Director for Davita Dixon Home Hemodialysis and Davita Roxbury units and is on staff at 10 area hospitals.
Dr. James Stim
An RNA co-founder, Dr. Sankaran is Board Certified in Nephrology and offers over 25 years experience. He received his Bachelor of Science degree from University of Illinois, Urbana and completed his Residency and Internship at Illinois Masonic Medical Center in Chicago and his Fellowship at Northwestern University School of Medicine, Chicago. He received his Medical Degree from U of I College of Medicine in Rockford where he is a Professor of Clinical Medicine at UIC College of Medicine, Rockford Campus and was recently awarded the Aureus Award as a Clinical Instructor.
Dr. Krishna Sankaran
RNA President and member of the Managing Board, Dr. Robertson joined RNA in 2005 and is Board Certified in Nephrology. He received his Bachelor of Science degree from Illinois Benedectine College in Lisle, IL. and completed his Residency and Fellowship at the University of Chicago in Chicago, Illinois. He received his Medical Degree from University of Illinois College of Medicine, Chicago, IL. where he graduated Summa Cum Laude. In addition, he is Medical Director at Davita Machesney Park Unit and is on staff at 12 area hospitals.
Dr. Michael Robertson
Dr. Ahmad joined the RNA staff in 2008 and is Board Certified in Nephrology and Internal Medicine. He received his Medical Degree from Dow Medical College in Karachi, Pakistan, completed his residency at Mount Vernon Hospital in Mount Vernon, NY and completed his Fellowship at Westchester County Medical Center in Valhalla, NY. Dr. Ahmad is the Medical Director of the Davita Belvidere Hemodialysis Unit. In addition, he is on staff at 10 area hospitals.
Dr. Mashood Ahmad
Dr. Niemiec joined the RNA staff in 2008 and is Board Certified in Nephrology and Internal Medicine. She received her Medical Degree from Collegium Medicum Jagiellonski University in Krakow, Poland on a full academic scholarship. She completed her Residency at St. Joseph Hospital Northwestern University School of Medicine in Chicago, IL. and her Fellowship at University of Iowa Hospital and Clinics in Iowa City, IA. In addition, she is a Clinical Instructor at U of I College of Medicine in Rockford and Medical Director of Davita Stonecrest and Beloit Dialysis Units. Dr. Niemiec is on staff at 10 area hospitals.
Dr. Joanna Niemiec
Dr. Pavithran joined the RNA staff in 2011 and is Board Certified in Nephrology and Internal Medicine. She received her Medical Degree from Medical College Trivandrum in Kerala, India. She completed her Residency at Mercy Hospital of Pittsburgh in Pittsburgh, PA and her Fellowship at University of Kentucky in Lexington, KY. Dr. Pavithran is a Clinical Instructor at U of I College of Medicine in Rockford and Medical Director of the Davita Timber Creek, Crimson Ridge and Sycamore Dialysis Units. In addition, she is on staff at 10 area hospitals.
Dr. Bindu Pavithran
Dr. Murdakes joined the RNA staff in 2013 and is Board Certified in Nephrology and Internal Medicine. She received her Bachelor of Science degree from University of Illinois, Champaign-Urbana, IL. and her Medical Degree from Rush College of Medicine in Chicago where she also completed her Residency and Fellowship. She is a Clinical Instructor at U of I College of Medicine in Rockford and Medical Director of Davita Forest City and Whiteside Hemodialysis Units. Dr. Murdakes is on staff at 10 area hospitals.
Dr. Charlene Murdakes
Dr. Ahmed joined the RNA staff in August of 2016 and is Board Certified in Nephrology and Internal Medicine. He received his Medical Degree from Deccan College of Medical Sciences in Hyderabad, India. He completed his Internship and Residency at Harbor Hospital in Baltimore, MD and his Fellowship at Emory University School of Medicine in Atlanta, GA. Dr. Ahmed was also Assistant Professor of Medicine at Loyola University in Maywood, IL. from 2012-2014. In addition, he is an Interventional Nephrologist at RNA Dialysis Access Services and is on staff at 10 area hospitals.
Dr. Syed Ahmed
Our Nurse Practitioners
Yvonne is ANCC Board Certified and has been a Certified Adult Nurse Practitioner with RNA since 2005 and now has achieved her CNN-NP which is a validation of her experience and expertise as a nephrology nurse practitioner. She received her Bachelor of Science in Nursing and her Master of Science in Nursing from UW Madison School of Nursing in Madison, Wisconsin. Yvonne assists our Physicians co-managing patients in the RNA Rockford office as well as 3 area hospitals. In addition she performs weekly dialysis rounds at Davita Dialysis Centers.
Yvonne Schoonover, APN
As an ANCC Board Certified Advanced Practice Nurse, Kathi has been a member of the RNA staff since 2005. She received her Nursing diploma from St. Anthony College of Nursing in Rockford, IL., her Bachelor of Science In Nursing from Rockford College in Rockford, IL. and her Master's Degree from Northern Illinois University in DeKalb, IL. Kathi assists our Physicians co-managing patients in the RNA Rockford office as well as 6 area hospitals in addition to performing weekly dialysis rounds at Davita Dialysis Centers.
Kathleen Capriola, APN
RNA welcomed Lilia in September of 2018 as an ANCC Board Certified Advanced Practice Nurse. She received her Bachelor of Science in Nursing from Rockford University in Rockford, IL. and her Doctor of Nursing Practice from Northern Illinois University in DeKalb, IL. She assists our Physicians co-managing patients in the RNA Rockford office and 4 area hospitals, in addition to performing weekly dialysis rounds at Davita Dialysis Centers. Lilia is also fluent in verbal and written communication in Spanish.
Lilia Avila, APN
Jessica became a member of the RNA team in June of 2020 as an ANCC Board Certified Advanced Practice Nurse. She received her Bachelor of Science in Nursing from in Rockford, IL. and her Master of Science in Nursing from in St. Louis, MO. Jessica assists our Physicians in co-managing patients in the RNA Rockford office and 4 area hospitals as well as performing weekly dialysis rounds at Davita Dialysis Centers.
Jessica Weiland, APN
Angela became a member of the RNA team in October of 2021 as an ANCC Board Certified Advanced Practice Nurse. She received her Bachelor's of Science in Nursing & Master of Science in Nursing-Family Nurse Practitioner from Chamberlain University. Angela assists our Physicians in co-managing patients in the RNA Rockford office and 4 area hospitals as well as performing weekly dialysis rounds at Davita Dialysis Centers.