Our Practice

Dr. Nietz

Dr Sarah Nietz is a compassionate and skilled breast surgeon dedicated to providing empathetic, high-quality care for her patients. Born and educated in Germany, Dr Nietz completed her surgical training in Johannesburg and is a Fellow of the College of Surgeons.

Suzelle Maree

Practice Manager

Suzelle is the heart of the practice and Dr Nietz’s right hand woman. Her passion, experience and knowledge in all matters related to medical administration forms the basis for your efficient and well-coordinated care.

Michelle Lamport

Patient Navigator

Meet Lee your patient navigator aka air traffic controller. No job is too big, no patient is too small! Often the patients’ journey can be overwhelming, daunting and at times confusing, she will not only navigate you through this process but will walk this journey with you, ensuring as much as possible a smooth and seamless ride.

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Copyright 2023. Dr. Sarah Nietz

Dr Russel Seider

Dr Seider is well known in the field of breast imaging, having established his practice in 1991 and only done breast work since 1996, long before stand- alone breast imaging practices became the norm.

He is highly specialised in breast screening, diagnosis and intervention and known for his exceptional personal and  professional care.

His practice offers all radiological breast investigations and procedures and osteoporosis screening and follow up.

Dr. Pamela Smilg

Dr Smilg qualified in South Africa as a radiologist in 1993 and obtained the UK radiology qualification FRCR in 1996.

She is a dedicated breast imager and interventionalist.

She has completed multiple courses in her sub- specialty, including a number of Laszlo Tabar courses, and stays up to date by attending local and international congresses, reading and interactions with peers.

She was head of the breast imaging department of a large radiology practice based on the East Rand for many years, during which time she opened and established a new branch in Bedfordview.

Dr Smilg currently works at Donald Gordon Medical Centre where she performs breast cancer screening, diagnosis and staging, localization procedures and post-treatment follow up, including reading of breast MRIs.

She aims to provide a warm, caring and professional service to her patients. She is currently involved in clinical trials and multiple multidisciplinary teams and has had publications in local and international journals. She has taught and lectured to mammography students.

Dr. Thato Sefanyetso

Dr Thato Sefanyetso is a general radiologist with a special interest in breast imaging.

She graduated in 2004 as a medical doctor at the University of the Witwatersrand and became a fellow of the College of Radiologists, South Africa in 2016. Upon joining private practice she took an interest in breast imaging and continues to advance in mammography, breast MRI, image-guided biopsies, in addition to general radiology.

Dr Sefanyetso currently practices at Sandton Radiology, with branches at both Sandton and Morningside Mediclinic, where she is also a director.

Website: www.bloch.co.za

Dr. Thamsanqa Madliwa

Current position: Histopathologist and Partner at Lancet Laboratories Richmond, Johannesburg 

Qualifications: MBChB (Natal), FC Path (Anat)SA.


  • BIGOSA - Breast Interest Group of Southern Africa (executive committee member)

  • IAP: International Academy of Pathology member 

Areas of interest: Breast, GIT and dermatopathology.

Website: www.lancet.co.za/pathologists

Dr. Sudeshen Naidoo

Dr Naidoo completed his Radiation Oncology fellowship at the University of the Witwatersrand in 2014.

During his time as a registrar, he won the best Registrar Poster Presentation in the country at the South African Society for Clinical and Radiation Oncology (SASCRO) 2013.

Dr Naidoo joined the de Mûelenaere Oncology Group in 2015 and is now one of the Directors of the group and Unit Head of Sandton Radiation Oncology.

In June of 2016, he completed his Master of Medicine in Radiation Oncology at the University of Witwatersrand and also previously served as the Radiation Oncology Advisor to the Ministry of Health South Africa between 2017-2021.

His other professional duties include:

  • Reviewer for The South African Journal of Oncology (SAJO) Review 175 - [March 2021].

  • Served as an Honorary Lecturer in the Department of Radiation Oncology, Faculty of Health Sciences, University of the Witwatersrand (2018-2020).

  • Served on the executive committee of the South African Society of Clinical and Radiation Oncology (SASCRO) [2017-2019].

  • Executive member of the Morningside Breast Multidisciplinary Tumour Board.

  • Founder and chairman of the Johnson-Rose Cancer Foundation.

  • Member of the Breast Wellness Centre Multidisciplinary Tumour Board.

Dr Naidoo is also a member of the European Society for Radiotherapy and Oncology (ESTRO) and mentee of Prof Philip Poortmans past president of ESTRO and one of the world’s experts in breast oncology.

He currently practices at the Sandton Oncology Centre, Ahmed Kathrada Cancer Institute, Life Fourways Hospital, Sunninghill Hospital and Krugersdorp Hospital.

Whilst Dr Naidoo treats various cancer sites, he has a special interest in Breast Cancer, Gynae Oncology, GIT Cancers and Neuro Oncology.

His current passion is research and is currently on the path of attaining his PhD in Oncology with the help of Mayo clinic Rochester USA and MD Anderson Cancer Centre Texas USA.

Website: www.sandtononcology.co.za/specialist

Dr. Simon J. Nayler

Simon J. Nayler is currently the managing pathologist at  Drs Gritzman & Thatcher Laboratories, and is also affiliated with the Donald Gordon Medical Centre, University of the Witwatersrand, Johannesburg.

He was previously associate professor and head of the NHLS histopathology laboratory at Jhb Hospital and had an interest in breast pathology for most of his career having chaired the breast pathology forum at Jhb Hospital from 1998-2008, ending when he entered private practice.

He has heled several appointments in professional and academic societies, including president of the South African College of Pathologists (Past President), Federation of South African Societies of Pathology (Past President) and International Liaison Committee of Presidents of Pathology Colleges (Member).

He is a past president of the Breast Interest Group of South Africa (BIGOSA) and also a member of the Special Technical Committee (STC) of the South African National Accreditation System (SANAS).

He has more than 50 peer-reviewed publications as well as a 2 textbook chapters to his credit, and has been invited to lecture on numerous occasions, both locally and overseas.

Website: www.gtlab.co.za 

Dr. Shirley Lipschitz

Dr Shirley Lipschitz is the founder of the breast wellness centre which offers state of the art equipment for screening and diagnosis of breast disease.

The team of 4 doctors  and  mammographers are dedicated  breast imaging specialists. We also do bone densitometry for the diagnosis and follow up of osteoporosis.

Our practices are at  both Linksfield and Sunninghill hospitals.

Website: www.breastwellness.co.za 

Dr. Sheree Koonin

I know that surgery of any kind can be daunting – and is not something to take lightly. This is why I would like to share my philosophy with you, as well as what you can expect from me. I believe that every person deserves to feel as good as they possibly can, inside and out. No matter your circumstances or where you are in life, I want to help you enhance your experience of living and co-create your recovery as part of the breast team I am honoured to be a part of. 

No person’s situation or perspective is the same. My holistic approach to your well-being ensures that you receive treatment in line with the highest ethical practices, and that I focus on your specific needs and circumstances as my patient, throughout the process. 

When you are passionate about something, it fills you, drives your energy flow, and gives your life purpose and meaning. That is how I feel about surgery and about your future surgery. I look forward to meeting you.

Website: www.drshereekoonin.co.za

Dr. Ronwyn van Eeden

Dr. Ronwyn van Eeden is a Medical Oncologist in Rosebank, Johannesburg. She is also an honorary consultant in Medical Oncology at the Chris Hani Academic hospital.

Dr. van Eeden and has several peer review journal publications, presents at many local and international meetings and symposia and serves on local advisory boards. She was a member of the executive committee for the South African Society of medical Oncology. She has a special interest in breast and lung cancer as well as immuno-oncology.

Website: www.oncorv.co.za

Dr. Peter Schoub

Dr Peter Schoub qualified as a doctor in 1998, and as a radiologist in 2007. For the last 10 years he has focused on breast imaging and obtained the European Diploma in Breast Imaging in 2018. Dr Schoub is based at the Parklane Women’s Imaging Centre. The centre is the only American College of Radiology accredited mammography, breast ultrasound and breast MRI facility in South Africa. 

Dr Schoub works closely with several breast cancer multidisciplinary teams that include breast surgeons and oncologists, assisting with diagnosis, staging, monitoring tumour response and presurgical localisation. He has recently introduced cryoablation for breast cancers into the unit. He is also an honorary lecturer in the Department of Radiology at WITS University.

Website: www.parklaneradiology.co.za

Dr. Pam Smilg and Dr Russel Seider

Dr Russel Seider & Associates at Donald Gordon Medical Centre is a practice dedicated to breast health.

Dr Russel Seider and Dr Pamela Smilg provide imaging services in a warm, caring and professional setting.

Website: Wits University Donald Gordon Medical Centre

Dr. Omondi Ogude

Dr. Omondi Ogude is a medical oncologist serving as a director of the Sandton Oncology Medical Group and practices at the Sandton Oncology Centre. Dr. Ogude received his medical degree in 2005 from the University of the Witwatersrand. He subsequently completed his Internal Medicine specialisation in 2011 and a medical oncology fellowship in 2014 at the same institution.

Dr. Ogude specialises in Breast, Gastrointestinal, and Gynecological malignancies and is actively involved in research. He serves as a principal investigator and sub-investigator on multiple trials. He also chairs and sits on various multidisciplinary forums in Johannesburg and advisory boards locally and internationally.

He is dedicated to advocacy work in oncology, serving as a director and board member of Campaigning For Cancer and The Johnson Rose Cancer Foundation, both non-profit organisations that promote better cancer care and awareness in South Africa.

As an active member of the South African Oncology Consortium, European Society of Medical Oncology, and American Society of Clinical Oncology, Dr Ogude stays informed on the latest developments in his field. His involvement in these organisations advances his knowledge in the field of oncology and providing the best care possible for his patients.

Website: www.oncology.co.za

Noelene Kinsley

Genetic Counselling Services

Noelene Kinsley is a genetic counsellor with an interest in hereditary cancer risk and helps individuals and families to reduce the impact of cancer in their lives.

Genetic counsellors review family and personal cancer history to determine the risk for a genetic/hereditary cancer risk. If appropriate they assist with genetic testing, and based on the outcome, preventative care and management.

Noelene has been in practice since 2011 and started GC Network, a genetic counselling group practice, to increase access to clinical genetic support. The team has a passion to help people make sense of health and genetics.

Website: www.gcnet.co.za 

Dr. Mariza Tunmer

Dr Tunmer is a Specialist Radiation Oncologist practicing at the WITS University Donald Gordon Medical Centre, Johannesburg, South Africa. She completed her undergraduate medical training at The University of Pretoria.

Following internship and community service Dr Tunmer worked as a medical officer at the Charlotte Maxeke Johannesburg Academic Hospital in Johannesburg, rotating through the Trauma Unit, Trauma ICU and Medical Casualty.

She also worked in various Casualty departments at private hospitals. In 2008 she joined the Medical Oncology Unit at CMJAH as a medical officer, before starting her specialist training in the Department of Radiation Oncology in 2009. She completed her training in 2012 and thereafter was employed as a Consultant Specialist Radiation Oncologist at CMJAH until 2014, before joining the WDGMC in full time private practice. She has remained involved in the teaching of registrars through WITS and is an examiner for the College of Medicine of South Africa as well as a member of the College Council of the Fellowship of Radiation Oncologists.

She currently serves as the President of SASCRO (South African Society of Clinical and Radiation Oncologists) as well as the Secretary of BIGOSA (Breast Interest Group of Southern Africa). A large proportion of Dr Tunmer's practice includes the management of patients with GIT malignancies, GUT malignancies, breast cancer, head and neck cancer & skin cancer.

She regularly attends Multi-Disciplinary Team meetings where challenging cases are discussed.

Website: www.dgmc.co.za/doctor/dr-mariza-tunmer

Michelle Lamport

Patient Navigator

Meet Lee your patient navigator aka air traffic controller. No job is too big, no patient is too small! Often the patients’ journey can be overwhelming, daunting and at times confusing, she will not only navigate you through this process but will walk this journey with you, ensuring as much as possible a smooth and seamless ride. 

Lee is passionate about human beings and especially mental health and wellness. She holds an undergraduate degree in psychology and criminology, post graduate degree in psychology and is currently completing a masters by dissertation in depression.

She has gained her working experience from a range of wonderful and unique opportunities ranging from corporate work to yachting to being a full-time academic. She has also volunteered her time as a trauma counsellor at Sandton Police Station and as a telephonic counsellor for the South African Depression and Anxiety Group (SADAG).

Empathy and compassion are a big part of her work and fit well into Dr. Nietz’s ethos and culture of the practice.

When she is not with Dr. Nietz’s team and patients, she is out and about in various parks walking and talking with her participants utilising an ecotherapy approach. 

Her first love is her twins, her second love is travelling. One of her priorities in life is to lead a healthy and happy life, to do it her way and see in her 100th birthday!

Suzelle Maree

Practice Manager

Suzelle is the heart of the practice and Dr Nietz’s right hand woman. Her passion, experience and knowledge in all matters related to medical administration forms the basis for your efficient and well-coordinated care.

With 13 years of experience working closely with surgeons, Suzelle possesses a breadth of knowledge spanning from plastic surgery to aesthetics to breast surgery. She is a mastermind in organization and essential to the smooth functioning of this very busy practice. She is consistently accessible and will assist you with compassion and a genuine desire to help those around her.

Dr. Sarah Nietz

Dr Sarah Nietz is a compassionate and skilled breast surgeon dedicated to providing empathetic, high-quality care for her patients. Born and educated in Germany, Dr Nietz completed her surgical training in Johannesburg and is a Fellow of the College of Surgeons. She has amassed impressive experience throughout her career and has become a well-recognized specialist in the treatment of breast disease.

From 2013 to 2019, Dr Nietz established and led the Charlotte Maxeke Breast Unit. More recently, she focused her attention on her private practice, where she treats over 300 newly diagnosed breast cancer patients annually.

Dr Nietz is committed to advancing knowledge in her field and has an enviable research record. She was one of the founding site investigators in the South African Breast Cancer and HIV Outcomes Study, a multicentre national project with the largest prospectively followed cohort in Africa, which has produced numerous high-ranking publications. Her main research interests are HIV and breast disease, barriers to care, and quality of breast cancer surgery in South Africa which is the topic of her ongoing PhD.

She has served on various committees, such as the Breast Interest Group of Southern Africa and the Surgical Research Society of South Africa and contributed to the National Department of Health's Breast Cancer Policy as part of an advisory team.

Dr Nietz believes in a holistic approach to breast cancer treatment and works with a multidisciplinary team of 30 experts, ranging from medical and radiation oncologists to pathologists, radiologists, geneticists, nuclear medicine physicians and many others. This comprehensive approach has been proven to improve patient outcomes and ensures a clear pathway in terms of treatment, recovery, and maintaining a high quality of life long after treatment.

With the advancements in treatment options, Dr Nietz is optimistic about the future of breast cancer care. She believes that personalized, targeted therapies will become more accessible, ultimately improving patients' quality of life. She is a strong advocate for early detection and encourages women to check their breasts regularly to increase the chances of less invasive treatment options, such as breast-conserving surgery.

Her warmth and approachability have left an impression on her patients, who appreciate not only her exceptional clinical expertise but also her genuine care and support throughout their cancer journey.

Dr Nietz is married and a mother to two young sons. She has a keen interest in art and loves experimenting with new culinary approaches.