Northwestern University Feinberg School of Medicine

Department of Urology

Male Infertility & Sexual Dysfunction

Infertility affects approximately fifteen percent of couples trying to initiate a pregnancy. In the past, evaluation and treatment focused primarily on the female partner. This is unfortunate, as a male factor causes thirty percent of infertility in couples, and a combination of male and female factors causes another twenty percent.


We are a national leader in drug development for topical therapy as well as new oral therapies for erectile dysfunction. We conduct studies comparing the cost-effectiveness of routine in-vitro fertilization versus vasectomy reversal. Additionally, we research male infertility’s relationship to more significant underlying medical disorder.

Patient Care

Through the Feinberg-affiliated Northwestern Memorial Hospital and clinical offices, our faculty provide comprehensive, state-of-the-art medical care to men experiencing fertility problems. We work closely with our reproductive endocrinology colleagues (female fertility specialists) in the use of assisted reproductive techniques such as intrauterine insemination (IUI) and in vitro fertilization (IVF)/intracytoplasmic sperm injection (ICSI). This collaborative approach maximizes the male and female partners' fertility status and helps to expedite care.

Selected Research Publications

Ring J, Welliver C, Parenteau M, Markwell S, Brannigan RE, Köhler TS. The Utility of Sex Hormone Binding Globulin in Hypogonadism and Infertile Males.

Moss JL, F Keeter MK, Brannigan RE, Kim ED. Erectile dysfunction and infertility in male cancer patients: addressing unmet needs.

Bieniek JM, Kashanian JA, Deibert CM, Grober ED, Lo KC, Brannigan RE, Sandlow JI, Jarvi KA. Influence of increasing body mass index on semen and reproductive hormonal parameters in a multi-institutional cohort of subfertile men.

Robert Brannigan, MD

Robert E. Brannigan, MD
Section Director, Male Infertility & Sexual Dysfunction


Nelson E. Bennett, Jr. MD

Geoffery Engel, MD