Joshua U. Klein, MD, FACOG

Board Certified Reproductive Endocrinologist

Dr. Joshua U. Klein is a board certified Reproductive Endocrinologist, an Assistant Clinical Professor at the Icahn School of Medicine at Mount Sinai, and the Co-Founder of Extend Fertility. He specializes in IVF, egg freezing, infertility, fertility preservation, artificial insemination, and treating polycystic ovarian syndrome (PCOS). Dr. Klein has been published in numerous peer-reviewed academic journals such as Science, Fertility and Sterility, and Obstetrics and Gynecology. He holds a BA in English from Yeshiva University and an MD from Harvard Medical School.

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Co-authored Articles (6)

13 Most Effective Ways to Help Get a Woman Pregnant

Simple lifestyle changes to increase the odds of your partner getting pregnantConceiving a child is a team effort, so what can you do on your part to help your partner get pregnant? One thing you can do is take steps to ...

How to

Improve FSH Levels

FSH (follicle stimulating hormone) is produced by the pituitary gland in both males and females. Having healthy FSH levels is important to both male and female fertility, among other things. Always start by working with ...

How to

Lower Estrogen Levels

Estrogen is a natural hormone most notable for the role it plays in female fertility, but when too much estrogen builds up in the body, it can lead to weight gain and may increase your risk of cancer, thyroid disorders, ...

How to Get the Most Accurate Pregnancy Test Results with PCOS & Improve Your Chances of Conception

Learn how early you can take a pregnancy test with PCOS and how often to retestIs your period late because you’re pregnant, or because of Polycystic Ovary Syndrome (PCOS)? When you’re trying to conceive, waiting to ...

How to

Perform a Self Injection to the Abdomen

Abdominal injections are commonly used for many types of problems, such as diabetes, autoimmune diseases and sometimes dwarfism. They are a type of subcutaneous injection (injection given to the fatty area between skin a...

How to

Raise Your Chances of Having Twins

If you’ve always dreamed of having twins, you’re probably searching for ways to increase your chances of a multiple-baby pregnancy. While the main factor in conceiving twins is genetics, studies suggest that there ma...