Our Doctors

Dr Tanya Webber (General Practitioner)

- MBChB, Diploma in Allergy (SA)

Graduate from the University of Pretoria in 2012
Internship at Tembisa Hospital in Gauteng
Community service in Seshego Hospital in Limpopo
Worked in a well established private practice in Polokwane Limpopo for many years
Founder of MedNova
Completed her Diploma in Allergology in 2025
Wife, and mother of two beautiful children
Email: webber@mednova.co.za

Dr Lesley-Anne De Lange (General practitioner)

- MBChB; Diploma in Primary Emergency Care; Diploma in HIV Management; Diploma in Child Health

Graduate from the University of Kwazulu Natal in 2012, Internship at Pietermaritzburg Metropolitan Hospital Complex in Kwazulu Natal. Community service officer at Pietermaritzburg District clinics.

Worked as a medical officer in many emergency departments in both public and private sector in both Pietermaritzburg and Johannesburg. Hospitals included Harry Gwala, Helen Joseph, Rahima Moosa, PMB Mediclinic, Midlands Medical Centre and Busamed Modderfontein.

Worked as medical officer in a paediatric and neonatal ICU at Nelson Mandela Childrens Hospital in Johannesburg. Worked as a medical officer on international cruise ship Princess Cruise Lines. Completed the following 3 diplomas: Primary Emergency Care, HIV management and Child Health Is a basic life support instructor.

Joined MedNova in 2025

Is married with 2 dogs
Email: delange@mednova.co.za

Dr Kristen Withey (General practitioner)

- MBChB

Graduate from the University of Cape Town in 2017

Internship at Helen Joseph Hospital and Rahima Moosa Mother and Child Hospital in Gauteng

Community service at Embhuleni Hospital in Mpumalanga

Worked in the ENT, ICU and Urology departments within the major public hospitals in Johannesburg

Worked as a locum GP in some private practices in Gauteng, while also assisting in some surgeries and teaching at WITS medical school

Joined MedNova in 2024

Married with one wonderful child!

Email: withey@mednova.co.za

Dr. Sarah Hamwi (General Practitioner)

- BSc, MBChB, Advanced Botox and Filler Training

Graduated in Bachelor of Human Sciences at UP in 2015, graduated in MBChB at University of Pretoria 2020

Internship at the Frere Hospital Complex in the Eastern Cape. Community service at the Gustrouw community Health Centre in the Eastern Cape

Worked in the Wexford General Hospital, Ireland, as a emergency medicine doctor

Completed advanced botox and filler course in 2025

Assistant in theatre to various surgeons/obstetricians/urologists

Completed da Vinci training in surgical robotics

Joined MedNova in 2026

Married

Email: hamwi@mednova.co.za