John Zhang, MD, PhD, MSc
Founder & Medical Director
Dr. John Zhang is the Founder and Medical Director of New Hope Fertility Center in New York City, leading the practice since 2004. Widely recognized for his pioneering work in minimally invasive fertility care, he played a key role in the development of Natural Cycle IVF and Mini-IVF™, advancing treatment options that reduce physical burden while maintaining clinical rigor. As both a physician and researcher, Dr. Zhang remains closely involved in patient care, guiding individuals and couples through treatment with a personalized, medically grounded approach.
Medical Education:
- Medical Degree (MD): Zhejiang University School of Medicine, China, 1984
- Master’s Degree (MSc) in Male Fertility: University of Birmingham, United Kingdom, 1985
- PhD in In Vitro Fertilization: University of Cambridge, United Kingdom, 1991
- Thesis: In vitro maturation and fertilization of mammalian oocytes
- British Postgraduate Scholarship recipient (1989)
Post-Doctoral Training:
- Post-Doctoral Scholar: Georgetown University, Washington D.C., 1991-1993
- Research Coordinator: Rockefeller Foundation research programme, Georgetown University and Peking University collaboration, 1993-1997
Clinical Training:
- Residency in Obstetrics and Gynecology: New York University School of Medicine, completed 1997
- Fellowship in Reproductive Endocrinology and Infertility: New York University School of Medicine, 2001
- First Fellow in the Division of Reproductive Endocrinology and Infertility at NYU
Board Certifications & Licenses:
- Board-Eligible Reproductive Endocrinologist and Infertility Specialist
- Board-Certified in Obstetrics and Gynecology (American Board of Obstetrics and Gynecology)
- Certified High Complexity Laboratory Director
Areas of Specialization:
- Minimally invasive fertility treatment (Mini-IVF™ and Natural Cycle IVF)
- Advanced maternal age fertility care
- Decreased ovarian reserve treatment
- Recurrent pregnancy loss
- Multiple failed IVF cycles and complex infertility cases
- Fertility preservation and egg freezing
- In vitro fertilization (IVF)
- Egg donation programs
- Genetic testing of embryos (PGT)
- Male factor infertility
Pioneering Approaches: Dr. Zhang is widely recognized for pioneering Mini-IVF™ in the United States and revolutionizing fertility treatment by offering a more natural and gentle approach that reduces physical burden while maintaining clinical rigor. His expertise allows women to pursue fertility treatment with less invasiveness and fewer side effects than traditional protocols.
Patient-Centered Philosophy: Dr. Zhang remains closely involved in patient care, guiding individuals and couples through treatment with a personalized, medically grounded approach. His commitment is to develop fertility solutions that are easier and less invasive than ever before, making parenthood accessible to more people.
Languages Spoken:
- English
- Chinese (Mandarin)
Dr. Zhang is internationally recognized for pioneering advances in assisted reproductive technology and mitochondrial replacement therapy.
Three-Parent Baby Technique – Mitochondrial Replacement: In 2016, Dr. Zhang successfully produced the world’s first baby born using the spindle transfer technique of mitochondrial replacement. Working with a family affected by Leigh syndrome, a severe genetic-neurological disorder caused by mitochondrial DNA mutations, Dr. Zhang used spindle transfer to replace mutated mitochondria while preserving the mother’s nuclear DNA. The healthy baby boy was born in April 2016, representing a major breakthrough in preventing inherited mitochondrial diseases.
Pronuclear Transfer Research: Dr. Zhang was among the first researchers to experiment with pronuclear transfer, a mitochondrial donation technique. In collaboration with Sun Yat-Sen University of Medical Science in 2003, he explored this method to address fertility challenges, achieving 70% fertilization success rates and contributing foundational research to the field.
Current Research Focus:
- Non-embryonic stem cell research
- Long-term cryopreservation of oocytes (advanced egg freezing technology)
- Oocyte reconstruction by nuclear transfer
- Advanced assisted reproductive technologies
- Minimally invasive IVF protocols
Selected Publications:
Mitochondrial Replacement:
- Live birth derived from oocyte spindle transfer to prevent mitochondrial disease (2016)
- Pronuclear transfer in human oocytes (2003)
IVF & Reproductive Technology:
- In vitro fertilization of horse follicular oocytes matured in vitro (1990)
- Zona-opening of hamster oocytes: comparative study (1994)
- Acrosome reaction of stallion spermatozoa (1990)
Male Fertility Research:
- Structural and functional changes of stallion spermatozoa (1991)
- Effects of antisperm antibody on human sperm motility (1989)
Professional Memberships:
- American Society for Reproductive Medicine (ASRM)
- American College of Obstetricians and Gynecologists (ACOG)
- British Fertility Society
- Founder and Member, Life Science Society at Cambridge University
Awards & Recognition:
- The Times Science Power List (2020)
- Nature’s Ten: Ten People That Mattered (2016)
- Foreign Policy Global Thinkers Award Nominee (2016)
- Named one of New York’s Top Doctors (2013)
- Resolve Hope Award for Achievement (2013)
- ASRM/Organon Research Award (2002–2004)
International Affiliations:
- Consultant, Sun Yat-sen University, Guangzhou, China (Reproductive Nuclear Transfer and Stem Cell Research)
- Consultant, Fertility Centre of Wenzhou Medical College, Zhejiang Province, China