Organization Structure

The Commission

Sandra M. Bodin, MA RN CNN


Sandra M. Bodin is a Certified Nephrology Nurse with over 30 years of nephrology nursing experience. In addition, she has extensive experience in nursing informatics, clinical documentation improvement, and the nephrology biopharmaceutical industry. Her career has been spent at Miller-Dwan Medical Center and St. Mary’s/Duluth Clinic in Duluth MN, Cedars-Sinai Medical Center in Los Angeles, The Mayo Clinic in Rochester MN, Affymax, Inc. Palo Alto CA, and Fresenius Kidney Care. She serves as editor of the Contemporary Nephrology Nursing textbook, 3rd and 4th editions. Sandra is a member of the American Nephrology Nurses’ Association (ANNA) and Sigma Theta Tau International Society of Nursing.

Lori Neal, BSN RN CNN


Lori Neal has been a Certified Nephrology Nurse for 13 years with over 19 years in nephrology nursing. She enjoys working as a Clinical Support Specialist for Fresenius Medical Care and has a background in acute therapies, out-patient setting & management. Lori is currently working on her Masters Program in nursing, volunteers with ANNA and has served as a CNN item writer and also as a board member.


Karen Solcher APRN NP-C CNN-NP

NNCC Treasurer / Chair, Advanced Practice Exam Board

Karen Solcher is a certified Family Nurse Practitioner with the Nephrology Division of Stormont-Vail Health of Topeka, Kansas. She received her BSN in 1992 and MSN in 1999. SOLCHER received her CNN-NP in 2012. She works in CKD clinics, outpatient hemodialysis, home dialysis and acute nephrology care. She has worked with nephrology patients since 1995. She currently serves as a member of the Advance Practice exam board and will join the NNCC commission in April, 2019. Karen is a member of the American Nephrology Nurses Association (ANNA).


Timothy Ray, DNP CNP CNN-NP


Timothy Ray Nephrology nurse practitioner for 21 years working in private practice with 3 nephrologists and three other NP’s. Clinical practice in acute hospital care and CKD/AKI patients, as well as general nephrology care. Help manage a home dialysis unit in a local long term care facility, and care for CKD issues in the patients living there. Have authored textbook chapters on acute are for nephrology NP’s, as well as for fluid/electrolytes and acid/base. Recently produced with AANP two online presentations on CKD and anemia management, as well as CKD and type2 diabetic care, including two podcasts. Currently co-chair of the AANP urology/nephrology specialty practice group (SPG). On clinical faculty at local nursing schools working with nurse practitioner students, as well as with a local PA program working with PA students. Have presented many times at the local, state and national level on a variety of nephrology topics. Have been a member of the NNCC CNN-NP test committee since 2010, and on their board for last few years as well.


Caroline F. Webb, BSN RN CNN

Commissioner / Liaison, Nursing Exam Board

Caroline Webb currently lives in Greensboro, North Carolina and is pursuing a masters in nursing at Averett University.  She is currently working with IKONA health to develop an innovative patient education program for CKD and ESRD patients.   In the past 7 years of working in nephrology Caroline has been a case manager for CKD and ESRD patients, worked as an outpatient peritoneal dialysis nurse, and worked at the hospital of the University of Pennsylvania as an acute dialysis RN.  She has also had the privilege of being on the CNN test committee for the NNCC for the past 4 years. 



Carrie Johnson, BSN RN CNN


Carrie Johnson has been a nephrology nurse since 2011 and has experience working in acute hemodialysis, outpatient hemodialysis, and home therapies.  She currently works as a Clinic Manager for Fresenius Kidney Care in Pennsylvania.  She served as an item writer for the CNN Test Committee from 2015 to 2020, and is currently involved with the National Kidney Foundation as one of their Directors-at-Large.  She is working on her Master's in Nursing with a focus on Quality, Safety, and Risk Management.



Lori Mahaffey, RN CNN


Lori Mahaffey is a Certified Nephrology Nurse with 35 years of experience in Nephrology. Lori has held various positions during her tenure in dialysis, including both chronic and acute hemodialysis, Peritoneal Dialysis Coordinator, Transplant Liaison, and Director of Clinical Operations of 4 centers for 17 years. Lori has served on the local ANNA Level as Chapter President and Chapter Secretary. On the National Level, she has served on the ANNA Conference Committee. Lori was a chapter author for Contemporary Nephrology Nursing’s 3rd Edition, and a chapter reviewer for the 4th edition. Lori has also been selected several times as an item writer/reviewer for the National Council of the State Board of Nursing. Lori has been a member of the NNCC’s CNN Conference Test Committee for 10 years and has been a board member for the past 4 years.




Mary Greensides, CCHT-A


Mary Greensides has been a hemodialysis technician for over 28 years in which she has in the Chronic/Acute/Post-Acute settings. Her roles and responsibilities include, Senior Tech/Preceptor of RNs and Techs, yearly Patient Education, Management of Water room integrity and training, Conducting Annual Competencies. Mary is currently working for Rockford Davita and has served as an Item-writer for the CCHT-A Committee. Recently appointed Co-Chair of NNCC test Committee and has begun her new term on the NNCC Commissioners Board effective April 1.




Kevin Harris

Public Member

Kevin Harris is a financial advisor with Edward Jones located in Connecticut. He is an Eagle Scout and is very active in his local community. He is in the chamber of commerce and on several Young Professional boards as well. He enjoys outdoor activities with his wife, dog, and new daughter.

Board Members:

Karen Solcher, Chairperson
Margaret Butler
Jessica Geer
Belbina Pereira
Leslie Prosser
Tim Ray

Kim A. Deaver, MSN RN CNN

Board Members:

Danilo B. Concepcion, CCHT-A, BOC Liaison
Tracie Johnston CCHT
Mary Greenside, CCHT-A
Sarah Mason CCHT
Tammy Pyle, CCHT-A
Lauren Lewis, CCHT

Karen Wiseman, MSN RN CNN

LaVonne Burrows, MS RN APRN-BC CNN

Board Members:

Lori Neal, BSN RN CNN
Lori Mahaffey, RN CNN
Laura Willis, MSN RN CDN
Carrie Johnson, BSN RN CNN, Liaison

Katherine H. Houle, MSN APRN C-FNP CNN-NP

Executive Director

Katherine H. Houle is a certified Nephrology Nurse Practitioner. She has been associated with nephrology certification since 2006. She was a member of the original committee that wrote the CNN-NP certification exam. She has been a commissioner on the Nephrology Nursing Certification Commission (NNCC) since 2006, serving as President from 2013-2015. She was appointed Associate Executive Director of the NNCC in April of 2017, and assumed the role of Executive Director in MArch of 2019.

Kim Marrero

Director of Certification Services

Kim Marrero began working at Anthony J. Jannetti, Inc. (AJJ) in 1999 as the Chapter Services Coordinator for American Nephrology Nursing Association (ANNA). In July 2000, Kim accepted a position with the International Association of Forensic Nurses (IAFN) as an Executive Secretary/Association Services Manager. Kim moved over to AJJ's marketing/advertising department for a short time before accepting the position of Director of Certification Services. Kim's duties include coordinating all aspects of the certification and recertification processes, providing administrative support to the NNCC commissioners and executive director, and working directly with the test management company, C-NET.

Marianne Cummins

Certification Specialist

Marianne Cummins has been with NNCC as a Certification Specialist since May 2005. Marianne is responsible for all aspects of the recertification process.

Margaret Caranfa

Certification Specialist

Margaret Caranfa has been with NNCC as a Certification Specialist since February 2015. Margaret is responsible for all aspects of the recertification process.

Julie Yusko

Administrative Assistant

Julie Yusko has been with NNCC as a Customer Service Representative since April 2018. She is responsible for customer service, answering phone calls, and sorting mail.