Mark P. Leondires, M.D.

Dr. Mark Leondires is the Founder and Medical Director at Illume Fertility and the Founder of Gay Parents To Be, a leading family-building resource for the LGBTQ+ community. Dr. Leondires resides in Connecticut with his partner and their two children.

Women's Health

IVF attrition: The journey from egg to embryo, explained

An expert dives into the IVF funnel and your chances of success.

Infertility

Why we need National Infertility Awareness Week more than ever

Recent legislative decisions have demonstrated just how critical it is that we continue to raise awareness of the nuanced and complex world of infertility.

Infertility

Male fertility is declining. Here’s what the latest research shows as to why

Though 50% of all infertility cases can be attributed to the male partner, new technologies offer solutions—and hope.

Adopt & Foster & Surrogacy

Why it’s important to talk to your kids about donor conception

And exactly what to say.

Infertility

What is the IVF process really like? A fertility doctor explains

A step-by-step guide to going through IVF.