Mercia matriculated in 1995 in Randfontein on the Westrand. Started her nursing studies at Ann Latsky Nursing College in 1996 finished her first year and then started her second year in 1997 at JG Strydom Hospital. In 1998 Mercia started as a receptionist at Bellstreet Hospital in Krugersdorp on the Westrand. There she started her collection of experience in medical administration by assisting in credit control, theatre & pharmacy stock take and supervising reception. In 2002 she started as receptionist at Healthworx Medical centre where she was promoted to paypoint administrator within a few months of employment and in 2003 she was approached and requested to apply for credit controller at Health-worx head-office. She started with credit control on only one practice Health-worx Randpark Ridge. When she left Health-worx in 2006 she left as a well-known senior credit controller at the following Health-worx practices: Randpark Ridge, Tygervalley, Centurion and Boksburg. She also left a debtor’s days record of 16 days in total to be broken. She started in September 2006 as the practice manager for Dr Frankel & Richards at Fourways Life Hospital. In 2008 she assisted Dr Frankel & Richards to take over the Life Flora Trauma unit and ran as practice manager of both practices at the same time. In 2013 Dr Frankel and Dr Richards decided to part ways and she decided to go back to Fourways Life Hospital Trauma unit with Dr Frankel. They ran the Fourways trauma unit and in 2016 the opportunity came and they along with Dr Brendan Blair started Fourways Urgent Care in Fourways, Gauteng. Currently Mercia is still practice manager to both practices for Dr Franke and Dr Blair. During her time of practice management, she has also got a diploma in Credit Management with Credit Blend Training and also did a short course in Payroll and basic accounting. She intends to further her studies.