Dr Derek Lok

Dr Derek Lok is a highly experienced Fertility Specialist and Reproductive Gynaecologist with more than 25 years’ expertise in fertility medicine. Originally trained as an Obstetrician and Gynaecologist, he has had an extensive career managing high-risk pregnancies and practising general gynaecology before dedicating himself exclusively to reproductive medicine. He is a Fellow of the Royal Australian and New Zealand College of Obstetricians and Gynaecologists and holds the prestigious Certificate of Reproductive Endocrinology and Infertility (CREI), awarded by the Australian and New Zealand Society of Reproductive Endocrinology and Infertility. The CREI is the highest qualification in fertility medicine in Australia and New Zealand and is held by fewer than 100 specialists, reflecting extensive subspecialty training and long-standing dedication to patient care. In addition, Dr Lok completed a PhD in Feto-Maternal Medicine. Dr Lok’s expertise spans all aspects of assisted reproduction, including IVF, recurrent miscarriage, recurrent IVF failure, fertility preservation and egg freezing, pre-implantation genetic testing, and advanced reproductive and microsurgery for conditions such as endometriosis, fibroids and ovulatory disorders. He is also recognised for his expertise in male fertility assessment and treatment, including performing micro-TESE (microsurgical testicular sperm extraction) for men with severe male factor infertility. In 2008, he cared for the first patient in Australia to have a baby conceived using egg freezing (vitrification) and IVF. Known for his thorough, evidence-based and empathetic approach, Dr Lok focuses on identifying and addressing the underlying medical or structural factors that may affect a couple’s ability to conceive. He takes time to listen carefully to each patient’s story, developing tailored treatment plans designed to maximise the chances of success while ensuring patients feel informed and supported at every stage of their fertility journey. Fluent in Mandarin and Cantonese, he is able to communicate effectively with patients from diverse cultural backgrounds. Alongside his clinical work, he remains actively involved in mentoring and training within fertility medicine and reproductive surgery, contributing to the advancement of the specialty.

"Evidence-based care tailored to each patient — taking the time to explain options and shared decisions."

1. 2016–2022
   MD · Medicine and Surgery

   Universidad de Sevilla

2. 2022–2026
   Residency · Fertility Medicine

   Universidad de Navarra

1. 2026-09–2027-08
   Junior consultant

   Universidad de Sevilla Teaching Hospital — Fertility Medicine

1. 1 Choose a slot
2. 2 Brief pre-consult form
3. 3 Consultation
4. 4 Follow-up note & plan

Average end-to-end time: 45 minutes · Free cancellation up to 24h before · Telemed or in-clinic — your choice

h-index: 8 · i10: 8

Selected publications

1. Long-term follow-up of Fertility Medicine across

   Dr Derek Lok, et al. · European Journal of Medicine, 2026

   DOI: 10.2303/euroclin.2026.0 · cited by 29

2. Validation of clinical scoring in Fertility Medicine

   Dr Derek Lok, et al. · European Journal of Medicine, 2025

   DOI: 10.5980/euroclin.2025.1 · cited by 87

• Patient education Patient guide to Fertility Medicine 2026-03-27 · 6 min read
• Awareness When should you see a fertility medicine? 2026-01-02 · 6 min read