Christy Grantham


Christy Grantham serves as Cash Posting Specialist at Mississippi Center for Advanced Medicine. In this role, Christy ensures payments and remittances are posted to patient accounts in MCAM’s electronic health record systems, communicates with insurance companies to process difficult claims, and ensures the accuracy of patient statements. Prior to joining MCAM, Christy served as an Accounts Receivable Supervisor at Country Originals, a Collections Specialist at Mississippi Sports Medicine, a Patient Financial Specialist at Pioneer Health Services, a Medical Records Auditor at Lakeland Nursing and Rehabilitation and as a legal assistant. In her spare time, Christy enjoys riding horses, wood working, cheering on the Ole Miss Rebels and most importantly spending time with her son Aiden.



Lynn Kimsey serves as the Billing and Coding Manager for Mississippi Center for Advanced Medicine. In this role, Lynn works closely with providers, clinicians and front office personnel to ensure an efficient and ethical practice related to payer and patient billing. Lynn has over forty years of experience in billing and coding at a variety of settings including pediatrics, family medicine, multi-specialty group practice, Willis-Knighton Health System and for an outsourced billing company. Lynn is a Certified Professional Coder (CPC) and Instructor (CPC-I), Certified Professional Compliance Officer (CPCO), Certified Professional Medical Auditor, and a Certified Evaluation and Management Coder. Ms. Kimsey is excited to work at MCAM and help the organization grow as additional pediatric services are added. In her spare time,Lynn enjoys spending time with her granddaughter, cooking and reading.

Erica Miller


Erica Miller serves as a Cash Posting Specialist at MCAM where she works to post payments to patient accounts in MCAM’s electronic medical record system and communicate with patients and payers regarding claims, billing matters and patient statements. Erica has twelve years of healthcare accounts receivable experience including serving as an accounts receivables specialist at Mid South Rehab Services, as a cash service specialist at Community Health Systems and as a switchboard operator and cashier at Madison County Medical Center. Erica is married to Seth, and they have three children, Mason, Maverick and Adalen and enjoy baseball, hunting and fishing together. As a mother of a child with a chronic condition, MCAM’s mission is closely aligned with Erica’s personal passion and career goals.

Sue Stevens, BS, RN


Sue Stevens works in the Financial Services department at MCAM and provides organizational support for accounts payable, patient account management, and payment processing. Sue has over twenty-one years of nursing experience and graduated with honors from Mississippi College with a Bachelor’s Degree in Business Administration and Cum Laude from Meridian Community College with an Associate Degree in Nursing. Ms. Stevens’ extensive accomplishments include owning and operating a fitness and weight loss facility, serving as a staff nurse for a vascular surgery practice and as charge nurse on an antepartum high risk pregnancy floor. Sue enjoys spending time with her husband, John, her children and their spouses, Rob (Tiffany), Laura (Ron) and grandchildren, Moxon, Nix, and Walker. She also likes to utilize her artistic abilities to create handmade quilts and greeting cards.

Khadija Sykes, AA


Khadija Sykes serves as a Medical Billing Specialist at the Mississippi Center for Advanced Medicine. In this role, Khadija is responsible for the timely review, billing and follow up with payers regarding MCAM’s professional billing. Ms. Sykes serves as an integral part of the Finance team at MCAM by processing and reconciling complex insurance claims. Prior to MCAM, Khadija served in a variety of healthcare finance roles including time at Mercy Hospital and the Medical Center in Chicago and as a transplant biller at an academic medical center. Ms. Sykes graduated from Richard Daley College with her Associates degree. She also holds a certificate in Medical Billing and Coding from the Computer Training Institute of Chicago. In her spare time, she enjoys traveling, watching cooking shows, gardening, shopping and spending quality time with family.

Cynthia Wiggins

Cynthia Wiggins

Cynthia Wiggins serves as a Medical Billing Denial Specialist at Mississippi Center for Advanced Medicine. In this role, Cynthia works to review claim denials and contact insurance companies to resolve outstanding issues. She also works to respond to patient questions and works with the chief financial officer to improve billing processes. Ms. Wiggins has an Associates of Science in Medical Billing and Coding from Virginia College and a Bachelor of Science in Healthcare Administration from Belhaven University. Cynthia has over eleven years of experience in medical billing in hospital-based billing roles.