612 Roxbury Rd Rockford, Illinois 61107

Will Be Closed at November 23rd to 24th! Happy Thanksgiving!
World Kidney Day 2024 - March 14th

Meet Our Medical and Office Staff

Our Physicians

Dr. John Maynard

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. Charles Sweeney

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. James Stim

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. Krishna Sankaran

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. Michael Robertson

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. Mashood Ahmad

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. Joanna Niemiec

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. Bindu Pavithran

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. Charlene Murdakes

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. Syed Ahmed

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.

Our Nurse Practitioners

Yvonne Schoonover, APN

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.

Kathleen Capriola, 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.

Angela Stanley, 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.

Karen Heckel, DPN, AGACNP-BC

Karen became a member of the RNA team in September of 2022 as ANCC Board DPN Certified Advanced Practice Nurse. She received her Bachelor's of Science in Nursing & OSF Doctorate of Nursing Practice in Nursing-Adult Gerontology Acute Care Nurse Practitioner, Family Nurse Practitioner from University of Illinois at Chicago. Karen 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, MS, FNP-C

Jessica became a member of RNA June 2020 until November of 2023. RNA welcomes her back March 2024 as an ANCC Board Certified Advanced Practice Nurse. She received her Bachelor of Science Rockford University and her Master of Science in Nursing from Chamberlain University. 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.

Our Office Staff

Practice Manager

Holly Curry, RN,BSN,CHSP

Nurse Practitioners

Quality Nurses

Laura RN, Julie RN, Jen RN

Medical Assistants

Call Center

Silva, Sasha, Celeste

Operations Supervisor

Provider Services

Supervisors

Anna and Kristi

We’re only a phone call away! Call (815) 227-8300 and let us know how we can help.

Share by: