Grants per year
Personal profile
Research Interests
I am a Professor in the Department of Urology at Northwestern University, Feinberg School of Medicine with a clinical and research focus on male reproductive medicine and surgery. I obtained undergraduate and medical degrees from Northwestern University. After completing residency training in Urology at Northwestern, I entered a fellowship in Male Reproductive Medicine and Surgery at Baylor College of Medicine. I returned to join the Faculty at Northwestern in 1999 where I am a Professor and Director of the Andrology Fellowship. Over half of my prior fellows now hold faculty positions at academic medical centers. Within Northwestern University, Feinberg School of Medicine, I serve as the Assistant Director of Student Affairs in the Augusta Webster Office of Medical Education.
I have been actively involved in the leadership of many national organizations and societies. I am a Past President of the Society for Male Reproduction and Urology (SMRU) and also a Past President of the Society for the Study of Male Reproduction (SSMR). I serve on the Examination Committee for the American Board of Urology and the Core Curriculum Committee for the American Urological Association. I was recently elected to a three-year term on the Board of Directors for the American Society for Reproductive Medicine. I am an Editorial Editor for the journal Fertility and Sterility, and an Assistant Editor for The Journal of Urology. I am an ad hoc reviewer for numerous other peer-reviewed journals.
My clinical concentration is male reproductive medicine and surgery. My surgical interests include performing: microsurgical vasectomy reversal; microsurgical varicocelectomy; micro-TESE for sperm extraction; and vasectomy. I treat hypogonadism (low testosterone) in males, including hypogonadism associated with aging and congenital causes such as Klinefelter's syndrome. My primary research focuses on fertility preservation (oncofertility) in adolescent and adult male patients with cancer.
Certifications and Licenses
Urology |
Training Experience
1993 | Internship, Northwestern University, McGaw Medical Center |
1994 | Residency, Northwestern University, McGaw Medical Center (Northwestern Memorial Hospital) |
1998 | Residency, Northwestern University, McGaw Medical Center (Northwestern Memorial Hospital) |
1999 | Fellowship, Baylor College of Medicine |
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
Education/Academic qualification
Medicine, MD, Northwestern University
… → 1992
Research interests keywords
- Gametogenesis
- Infertility
- Infertility (male)
- Male Infertility Vasectomy Reversal
- Men's Health
- Men's Reproductive Health
- Reproduction
- Sexual dysfunction
- Surgery
- Urology
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Collaborations and top research areas from the last five years
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Northwestern University Andrology Fellowship
Bennett Jr, N. E. & Brannigan, R. E.
7/1/23 → 6/29/24
Project: Research project
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The Role of Low Testosterone in Perioperative Surgical Outcomes
Halpern, J. A., Brannigan, R. E. & Schaeffer, E. M.
7/1/22 → 6/30/24
Project: Research project
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Northwestern University Andrology Fellowship
Bennett Jr, N. E. & Brannigan, R. E.
7/1/22 → 6/30/23
Project: Research project
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Assessing the Prevalence of Low Testosterone and Elevated Follicle Stimulating Hormone Among Men Presenting for Fertility Evaluation Without Oligospermia
Greenberg, D. R., Hudnall, M. T., Goyette, B. N., Lai, J. D., Hayon, S., Bennett Jr, N. E., Brannigan, R. E. & Halpern, J. A., 2023, (Accepted/In press) In: Urology.Research output: Contribution to journal › Article › peer-review
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Association between frailty and low testosterone among men undergoing oncologic surgery
Hudnall, M. T., Greenberg, D., Logan, C., Schaeffer, E. M., Brannigan, R. E., Bentrem, D. J. & Halpern, J. A., Mar 2023, In: Journal of surgical oncology. 127, 3, p. 501-503 3 p.Research output: Contribution to journal › Letter › peer-review
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Author Reply
Pham, M. N., Brannigan, R. E. & Halpern, J. A., Apr 2023, In: Urology. 174, p. 221-222 2 p.Research output: Contribution to journal › Letter › peer-review
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Compensated Hypospermatogenesis: Elevated Follicle-stimulating Hormone Predicts Decline in Semen Parameters Among Men With Normal Index Semen Analysis
Fantus, R. J., Lin, J. S., Chang, C., Pham, M., Dubin, J. M., Brannigan, R. E. & Halpern, J. A., Apr 2023, In: Urology. 174, p. 99-103 5 p.Research output: Contribution to journal › Article › peer-review
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Evaluation and characterization of testosterone-related mobile health applications
Aguiar, J. A., Halpern, J. A., Hayon, S., Brannigan, R. E. & Dubin, J. M., 2023, (Accepted/In press) In: International Journal of Impotence Research.Research output: Contribution to journal › Letter › peer-review