Dr. Ryh-Sheng Li

About

Three grades in one unit come before the current title: resident physician, then research physician, then attending physician in the infertility department of Mackay Memorial Hospital’s obstetrics and gynecology division. That sequence is the spine of Dr. Ryh-Sheng Li’s training, and it is the standard way a reproductive specialist is formed inside a Taiwanese teaching hospital — supervised cycle work first, a research appointment in the same department, then independent practice with the same case list. Dr. Li is now Director of Fertility Research at NUWA Fertility Center, where research and evaluation form a department in their own right rather than being folded into the procedural service.

The medical degree is from the College of Medicine at Taipei Medical University. The appointment after Mackay was attending physician at Stork Fertility Center, a center built entirely around assisted reproduction rather than a hospital department that also carries general obstetric and gynecologic admissions. Those two settings approach the same treatments from opposite directions, and a physician who has held attending posts in both writes a stimulation protocol with the hospital’s case mix and the dedicated center’s cycle volume in mind.

The work runs from infertility treatment, IVF and IUI through egg freezing, sperm freezing, donated eggs and donated sperm, recurrent miscarriage and premature ovarian insufficiency — and one item in that range is unusual for a treating physician to take on as a focus in its own right: reproductive autoimmune evaluation. It belongs next to recurrent miscarriage and premature ovarian insufficiency, the two situations in which an immune abnormality is most often raised as a possible cause, so the interpretation work and the cycle work sit with one physician instead of being split between colleagues the patient has to meet separately.

Clinical Expertise

• Infertility treatment: systematic assessment of both partners before any intervention is chosen, separating ovulatory, tubal, uterine and male factors so the starting level of treatment matches the actual cause.
• IVF: ovarian stimulation design, follicle monitoring, retrieval, and the decision about which embryos to transfer, freeze or test.
• IUI: washed sperm placed in the uterine cavity around ovulation, the intermediate step used when ovulation has been induced with medication but conception has not followed, or when mild male factor or unexplained infertility is the finding.
• Egg freezing: vitrification of oocytes for a patient whose pregnancy plans sit further out than their ovarian reserve allows, or before an intervention that threatens fertility.
• Sperm freezing: the same preservation logic applied on the male side, used before gonadotoxic treatment, before a cycle where the partner’s retrieval date may move, or when a sample cannot be produced on the day required.
• Donor eggs: judgment about whether own eggs can still give a realistic chance, then screening, matching and scheduling of a donated-egg cycle.
• Donor sperm: used for severe male factor, absent sperm in the ejaculate, or a single parent planning a family, with the counselling and quarantine steps that precede use.
• Recurrent miscarriage: review of previous losses, embryo chromosome status, cavity anatomy, endocrine values and coagulation, followed by a changed plan rather than a repeated one.
• Reproductive autoimmune evaluation: reading autoimmune markers against the clinical pattern, deciding which results are actionable for the next cycle, and coordinating with NUWA’s autoimmune team where treatment is needed.
• Premature ovarian insufficiency: estimating what ovarian function remains, then judging between mild stimulation, cycles accumulated over time, and moving to donor gametes.

Why Choose Dr. Li

Research physician is a separate line, not a description of the job. The Mackay appointments run resident physician, research physician and attending physician as three separate posts in the same infertility department. The middle one is a distinct stage, and it means the research side of the field — protocol comparison, outcome reading, method questions — was worked on inside a hospital unit rather than picked up afterwards.

Autoimmune evaluation counts as a focus in its own right. Immune causes of repeated loss are frequently asserted on thin evidence. A physician who works on the evaluation as a named part of the practice, inside a clinic that also staffs an autoimmune team, is in a position to say when the finding is real and when it is not, and to arrange the next step in the same building.

Hospital and dedicated-center practice behind one career. The attending years were spent in a university hospital infertility department and then at Stork Fertility Center. Complex cases and high-volume cycles ask different questions of a protocol, and both sets of answers sit inside one career.

All four gamete-handling services are covered. Egg freezing, sperm freezing, donated eggs and donated sperm are each handled as a distinct service. For a patient whose own reserve has fallen, the conversation about switching to donated gametes does not require another referral, and the same physician can discuss preservation of what remains.

A research directorship at a clinic that performs its own cycles. The directorship is in research rather than in a procedural department, which places evidence questions — what a test can and cannot show, why one protocol over another — inside the same person who runs the treatment.

Professional Affiliations

Education: College of Medicine, Taipei Medical University. Training and appointments: resident physician, research physician and attending physician in the infertility department of Mackay Memorial Hospital’s obstetrics and gynecology division, then attending physician at Stork Fertility Center. The current post is Director of Fertility Research at NUWA Fertility Center, within its fertility medical team.

Suitable For

Recurrent miscarriage with an immune question still open: after repeated losses the differential spans embryo chromosomes, cavity shape, hormones, coagulation and immunity, and the immune branch is the one easiest to over-read. Recurrent miscarriage and autoimmune evaluation are worked on in the same practice, so interpretation and treatment planning stay with one physician.

Repeated IVF failure needing an immune-side review: when transfers have failed on good-quality embryos, patients are often offered immune tests without a clear indication. The useful output is a decision about whether the result changes the next cycle, which is what the pairing of loss work and immune evaluation is for.

Premature ovarian insufficiency and low reserve: response to stimulation becomes unpredictable, so the plan may need mild protocols, several retrievals before any transfer, or a move to donor eggs. Insufficiency, freezing and donation all sit in one practice, so those routes can be compared in a single consultation.

Couples planning a donor egg or donor sperm cycle: donated-gamete treatment turns on indication, screening and scheduling rather than on stimulation technique, and both donated-gamete routes are covered.

Egg or sperm freezing before family planning or treatment: preservation work is time-sensitive when it has to fit ahead of another medical therapy, and freezing of eggs and of sperm are each covered in their own right.