Isaac Kligman, M.D.

About

Egg freezing only became a credible offer when eggs stopped dying in the thaw. Dr. Isaac Kligman is credited with pioneering work on oocyte vitrification — the ultra-rapid freezing method that avoids ice-crystal damage and lifted survival and pregnancy rates enough to make elective egg banking a standard service. That thread runs through his career at New York’s Weill Cornell Center for Reproductive Medicine, where he holds professorships in both clinical obstetrics and gynecology and clinical reproductive medicine.

His published research sits on the same ground: ovarian physiology, ovulation induction, IVF outcomes and polycystic ovarian syndrome, with extensive peer-reviewed output, book chapters and service as an investigator on numerous clinical trial protocols. He serves on the editorial boards of Fertility and Sterility and Reproducción Humana, the journal of the Latin American Network of Reproductive Medicine.

Kligman is also the clinic’s surgeon for the anatomical causes of infertility — operative laparoscopy and hysteroscopy for endometriosis, pelvic adhesions, tubal blockage, ovarian cysts, polyps, fibroids and uterine septum — and he consults and operates in Spanish as well as English. He earned his medical degree at Universidad Javeriana in Bogotá, completed residency and subspecialty training in the US, and is dual board-certified by ABOG.

Clinical Expertise

• Oocyte Vitrification / Egg Freezing: pioneer of the fast-freeze technique; oversees preservation cycles for elective and medical indications
• IVF and ICSI: individualized stimulation through transfer, using the center’s in-house lab for micromanipulation and genetic testing
• PCOS and Ovulation Induction: metabolic and hormonal management plus timed intercourse, IUI or IVF by case severity — a named research interest
• Operative Laparoscopy: endometriosis, adhesions, tubal disease and ovarian cysts addressed with minimally invasive surgery
• Hysteroscopic Surgery: polypectomy, myomectomy, septum correction and Asherman-type scar removal to prepare the uterine cavity for transfer

Why Choose Dr. Kligman

He helped invent the service he provides. Few egg-freezing patients are seen by a physician with pioneer standing in oocyte vitrification itself.

Medical and surgical care in one set of hands. Stimulation protocols and cavity-clarifying hysteroscopy or laparoscopy are run by the same physician who researches ovarian physiology.

Editorial-board visibility. His seat on the Fertility and Sterility editorial board means the current literature passes through his desk professionally, not incidentally.

Long CRM tenure with national recognition: a Marquis Who’s Who entry in both the American and world volumes, a Marquis Lifetime Achievement award, and a consistent New York Magazine Best Doctor and Castle Connolly Top Doctor for the New York metropolitan area.

Professional Affiliations

Active member of the American Society for Reproductive Medicine. Board-certified by the American Board of Obstetrics and Gynecology in Obstetrics and Gynecology and in Reproductive Endocrinology and Infertility. Editorial board member, Fertility and Sterility, and Reproducción Humana (official journal of ALMER). Attending obstetrician and gynecologist at NewYork-Presbyterian Hospital.

Suitable For

• Women banking eggs before time or treatment takes the option away: medical (pre-chemotherapy) and elective freezing with a vitrification pioneer
• IVF/ICSI patients with tubal, male factor, ovulatory or unexplained infertility: full-cycle management inside an academic lab
• Endometriosis and fibroid patients: surgical restoration of anatomy before or alongside ART
• PCOS patients: an investigator’s approach to ovulation induction, from lifestyle and metabolic tuning through stimulated cycles
• Spanish-speaking patients: consultation and operative care in Spanish