Muhammed Alaa Moukhtar Hammad

Research Fellow, Department of Urology, University of California, Irvine

Biography

Muhammed Alaa Moukhtar Hammad, MBBCh, is a Research Fellow in the Department of Urology at the University of California, Irvine. He received his Bachelor of Medicine and Bachelor of Surgery (MBBCh) from Mansoura Faculty of Medicine in Egypt and completed a Master of Biomedical and Translational Science (MS-BATS) at the University of California, Irvine School of Medicine in 2023. His research focuses on urological diseases, particularly sexual dysfunction and prostate cancer, with ongoing investigations into the microbiome's role in erectile dysfunction and Peyronie's disease, as well as novel therapeutic interventions including low-intensity shock wave therapy and radiofrequency treatments.

Dr. Hammad has authored over 90 peer-reviewed publications and contributed to multiple book chapters in andrology and urology. His work spans collaborative multi-institutional studies on penile prosthetic surgery, testosterone replacement therapy, and sexual medicine. He has received multiple research grants, including as primary investigator for a 2025 Sexual Medicine Society of North America (SMSNA) Scholars in Sexuality Grant to develop machine learning models for predicting inflatable penile prosthesis complications. He serves on the editorial board of Therapeutic Advances in Urology and reviews for numerous journals including Sexual Medicine Reviews and the International Journal of Impotence Research.

Dr. Hammad has presented his research at national and international conferences, receiving recognition including Best Adult Abstract at the 2023 North American Robotic Urology Symposium, Best Surgical Abstract at the 2023 World Meeting on Sexual Medicine, and the Outstanding Fellow/Resident Research Award from the University of California, Irvine School of Medicine in 2024. He is an active member of the American Urological Association, Sexual Medicine Society of North America, and International Society for Sexual Medicine, and serves as a member of the SMSNA Medical Student & Resident Committee.

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Education

American Diploma, High School
MBBCh, Mansoura Faculty of Medicine
MS-BATS in Biomedical and Translational Science, University of California, Irvine, School of Medicine

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Distinctions

MS-BATS High Achiever with GPA 4.0, University of California, Irvine, 2023
Winner of Associated Graduate Students Winter Conference Stipend, 2023
Winner of Best Adult Abstract, North American Robotic Urology Symposium, 2023
Winner of Best Surgical Abstract, 24th World Meeting on Sexual Medicine ISSM/MESSM, 2023
Translational Andrology and Urology Journal Outstanding Authors' List, 2023
Awardee of 24th World Meeting on Sexual Medicine ISSM/MESSM Annual Travel Stipend, 2023
Winner of Best Moderated Poster, Prostate Cancer Session, American Urological Association (AUA) Annual Meeting, 2024
Accepted Full Membership nomination for Sigma Xi, The Scientific Research Honor Society, 2024
Editorial board of Therapeutic Advances in Urology (TAU) Journal, Andrology, Fertility, and Sexual Health Section, 2024
2024 SMSNA Scholars in Sexuality Grant, Co-investigator, 2024
Honorable mention for Most Promising Future Faculty Award, Division of Teaching Excellence and Innovation, University of California Irvine, 2024
Outstanding Fellow/Resident Research Award (Clinical/Translational), University of California Irvine, School of Medicine, 2024
2024 Susan Samueli Integrative Health Institute Grant, Co-investigator, 2024
Translational Andrology and Urology (TAU) Journal, Reviewer of the Month, 2025
Winner of 2025 Society of Urodynamics, Female Pelvic Medicine & Urogenital Reconstruction (SUFU) Twitter/X contest for Best Fellow, 2025
2025 SMSNA Scholars in Sexuality Grant, Primary investigator, 2025
2025 UC Irvine School of Medicine Interdisciplinary Resident/Fellow Research Showcase Finalist, 2025
Best Showcase Presentation and Travel Award, 2025 UC Irvine School of Medicine Interdisciplinary Resident/Fellow Research Showcase, 2025
Outstanding mentor in School of Medicine, Honorable mention, 2025 UC Irvine Susan & Henry Samueli College of Health Sciences Alumni Mentorship Program, 2025

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Areas of Expertise

Urological Sexual Medicine
Penile Prosthesis Surgery
Peyronie's Disease Management
Testosterone Replacement Therapy
Microbiome Erectile Dysfunction
Overactive Bladder Treatment
Prostate Cancer Outcomes

Recent Publications

Kadakia Y.H., Hammad M.A.M., Abou Chawareb E., Yafi F.A., Chang O.H., Yih J.M., “Comparative evaluation of AI language models in educating patients on women’s sexual health” (opens in new tab), Therapeutic Advances in Urology, vol. 18, 2026.
Muhammed A. Moukhtar Hammad, Nardeen Magdy Samaan, Gamal Ghoniem, “Management of High Urogenital Sinus in Adults: A Scoping Review” (opens in new tab), Medicina Lithuania, vol. 61, no. 2, pp. 191, 2025.
Mana Almuhaideb, Dhiresh Bandaru, Elia Abou Chawareb, Faysal A. Yafi, Muhammed A. M. Hammad, “Ethical perspective on telemedicine usage in sexualmedicine: A friend or a foe?” (opens in new tab), UroPrecision, vol. 3, pp. 47-53, 2025.
Mahdi, M., Hammad, M.A.M., Abou Chawareb, E., “Adherence to american urological association (AUA) vasectomy guidelines: a systematic review of current practice among healthcare providers” (opens in new tab), International Journal of Impotence Research, 2025.
Hammad MAM, Miller J, Sultan MI, “Rising public interest in stem cell therapy for erectile dysfunction: an analysis of public perception and a review of the literature” (opens in new tab), Therapeutic Advances in Urology, vol. 17, 2025.
Hammad Ahmed A, Ezzat Osama, Filicevas Alex, Hammad Sara A, Elkady Mostafa M, Eladl Mohamed E, Mosaad Karim, Shalaby Mohammed M, Barakat Ahmed A, El-Deeb Karim Y, Eldawody Basma A, Elkanishy Ghada, Hammad Muhammed A Moukhtar, Mosbah Ahmed, “Enhancing bladder cancer awareness and knowledge through multifaceted community engagement in Egypt: a cross-sectional study” (opens in new tab), Ecancermedicalscience, vol. 19, pp. 1886, 2025.
Supanut Lumbiganon, Hana Nakamura, Muhammed A M Hammad, Elia A Chawareb, Faysal A Yafi, “Are patients undergoing intralesional collagenase Clostridium histolyticum injection therapy for Peyronie's disease compliant? A 7-year analysis from a tertiary care men's health center” (opens in new tab), The Journal of Sexual Medicine, vol. 22, pp. 794-798, 2025.
Ahmed, Zaid, Muhammed A. Moukhtar Hammad, Jake Miller, Elia Abou Chawareb, Lawrence C. Jenkins, Faysal A. Yafi, “Epidemiological Insights into Erectile Dysfunction in the United States: A Google Trends Analysis” (opens in new tab), Société Internationale d'Urologie Journal, vol. 6, no. 2, pp. 31, 2025.
Hammad, M.A.M., Miller, J.A., Magill, R.G., “Awareness of monkeypox virus among sexual medicine experts is low: a multi-institutional survey” (opens in new tab), International Journal of Impotence Research, vol. 38, pp. 19-22, 2025.
Mark I. Sultan, Muhammed A M Hammad, Ramy F. Youssef, “Sex and Age Variation for Nephrolithiasis Risk Factors on 24-Hour Urine Metabolic Evaluation: A Real-World Single-center Retrospective Analysis” (opens in new tab), Urology, vol. 204, pp. 34-40, 2025.
Jake Miller, Elia Abou Chawareb, Muhammad A. M. Hammad, Faysal A Yafi, “Case Studies in Ejaculatory Dysfunction”, AUA Update Series, 2025.
Ghoniem, G., Karram, M., Hammad, M.A.M., “Toward Novel Targeted Therapy for Overactive Bladder: A Cadaver Study Identifying Critical Autonomic Nerve Structures” (opens in new tab), Neurourology and Urodynamics, vol. 44, pp. 1695-1703, 2025.
Hammad, M. A. M., Abou Chawareb, E., Lee, J., Mahdi, M., Ahmadi, M., Giannico, G., Yafi, F. A., “A rare case of intravascular papillary endothelial hyperplasia (Masson's tumor) of the penis” (opens in new tab), International journal of impotence research, vol. 37, pp. 794-796, 2025.
Chawareb EA, Hammad MAM, Azad B, Gross MS, Payne B, Swerdloff D, Miller JA, Andrianne R, Burnett AL, Gross K, Hatzichristodoulou G, Hotaling JM, Hsieh TC, Jones JM, Lentz A, Modgil V, Osmonov D, Park SH, Pearce I, Perito P, et al., “Perioperative Antimicrobial Strategies in IPP Surgery: Associations Between Antifungals, Oral Antibiotics, and IV Antibiotic Duration, and Infection Outcomes” (opens in new tab), Journal of Urology, 2025.
Hana S. Nakamura, Muhammed A Moukhtar Hammad, Elia Abou Chawareb, Gustavo Gryzinski, Faysal A Yafi, Olivia Chang, Jessica Yih, “Exploring Gender Disparities in Female and Male Sexual Dysfunction” (opens in new tab), The Journal of Sexual Medicine, vol. 22, no. Supplement_1, pp. qdaf068.045, 2025.
Zaid Ahmed, Muhammed A M Hammad, Elia Abou Chawareb, Gustavo Gryzinski, Faysal A Yafi, Jessica Yih, “Changes in Public Interest for Reproductive Health Post-Dobbs v. Jackson Women's Health Organization Decision: Insights from Google Trends” (opens in new tab), The Journal of Sexual Medicine, vol. 22, no. Supplement_1, pp. qdaf068.166, 2025.
A Shah, K Davuluri, M Hammad, J Yih, “SEXUAL INTERCOURSE DURING PREGNANCY AND PRETERM LABOR: A SCOPING REVIEW OF CLINICAL ASSOCIATIONS” (opens in new tab), The Journal of Sexual Medicine, vol. 22, no. Supplement_1, pp. qdaf068.050, 2025.
Muhammed A Moukhtar Hammad, Yeagyeong Hwang, Hana S Nakamura, Tuan T. Nguyen, Joshua Tran, Eliana Haddadin, Mai XuanNguyen, Eliad Amini, Rafael Gevorkyan, Linda My Huynh, Catherine Fung, Faysal A. Yafi, Thomas E. Ahlering, “Cardiovascular Event Outcomes in Prostate Cancer Patients Receiving Testosterone Replacement Therapy: A Propensity-Score Matched Comparative Analysis with Long Term Follow-Up” (opens in new tab), Journal of Urology, vol. 213, no. 5S, pp. e554, 2025.
Muhammed A Moukhtar Hammad, Gamal Ghoniem, “Comparing Outcomes Following Hysterectomy and Sacrocolpopexy Using a Real-World Global Database” (opens in new tab), Journal of Urology, vol. 213, no. 5S, pp. e165, 2025.
Elia Abou Chawareb, Muhammed A.M. Hammad, Babak Azad, Martin S. Gross, Daniel Swerdloff, Jake A. Miller, Robert Andrianne, Arthur L. Burnett, Kelli Gross, Georgios Hatzichristodoulou, James M. Hotaling, Tung-Chin Hsieh, James M Jones, Aaron Lentz, Vaibhav Modgil, Daniar Osmonov, Sung Hun Park, Ian Pearce, Paul Perito, Hossein Sadeghi-Nejad, et al., “Insights on Perioperative Antimicrobial Prophylaxis Patterns for Inflatable Penile Prosthesis: Findings From a Large Multinational Collaborative” (opens in new tab), Journal of Urology, vol. 213, no. 5S, pp. e966, 2025.

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Most Cited Publications

David Barham, Muhammed Hammad, Nikolaos Pyrgidis, Daniel Swerdloff, Koenraad van Renterghem, Matthew Ziegelmann, Martin Gross, Jay Simhan, George Hatzichristodoulou, James Hotaling, Tung-Chin Hsieh, Nick Warner, Aaron Lentz, Aaron Lentz, Hossein Sadeghi-Nejad, Daniar Osmonov, Sung Hun Park, Ian Pearce, Paul Perito, Faysal A. Yafi, “A multicenter analysis of the AUA recommended antibiotic prophylaxis for penile implantation results in higher, not lower, infection risk” (opens in new tab), Journal of Urology, vol. 209, no. 2, pp. 399-409, 2023.
David Barham, Crystal Chang, Muhammed Hammad, Nikolaos Pyrgidis, Daniel Swerdloff, Kelli Gross, Georgios Hatzichristodoulou, Tnug-Chin Hsieh, James Hotaling, Lawrence Jenkins, James M. Jones, Vaibhav Modgil, Daniar Osmonov, Ian Pearce, Paul Perito, Hussein Sadeghi-Nejad, Alfredo Suarez-Sarmiento Jr, Maxime Sempels, C Austin Service, Jay Simhan, et al., “Delayed placement of an inflatable penile prosthesis is associated with a high complication rate in men with a history of ischemic priapism” (opens in new tab), Journal of Sexual Medicine, vol. 20, no. 7, pp. 1052-1056, 2023.
David Barham, Edward Choi, Muhammed Hammad, Daniel Swerdloff, Brittany Berk, Eric Chung, Jonathan Clavell-Hernandez, Martin Gross, Lawrence Jenkins, James McAndrew Jones, Martin Kathryns, Aaron Lentz, Joshua Schammel, Jay Simhan, John Selph, Charles Welliver, Faysal A. Yafi, “Partial component exchange of a non-infected penile prosthesis is associated with a higher complication rate” (opens in new tab), Urology, vol. 174, pp. 128-134, 2023.
Muhammed A. Moukhtar Hammad, David W. Barham, Daniel I. Sanford, Eliad Amini, Lawrence Jenkins, Faysal A. Yafi, “Maximizing outcomes in penile prosthetic surgery: exploring strategies to prevent and manage infectious and non-infectious complications” (opens in new tab), International Journal of Impotence Research, vol. 35, pp. 613-619, 2023.
Mahdi Osman, Muhammed Hammad, Farouk El-Khatib, Jeanie Nguyen, Edward Choi, Joshua Randolph, Guruduth Banavar, Ying Cai, Pedro Moura, Nan Shen, Ryan Toma, Momchilo Vuyisich, Nathalie Yafi, Faysal A. Yafi, “Comparison of the Gut Microbiome Composition Between Men With Erectile Dysfunction and A Matched Cohort: A Pilot Study” (opens in new tab), Andrology, vol. 12, pp. 374-379, 2023.
Gustavo Gryzinski, Muhammed A Moukhtar Hammad, Laith Alzweri, Babak Azad, David Barham, Supanut Lumbiganon, Ege Can Serefoglu, Faysal Yafi, “Hard-Flaccid syndrome: a survey of sexual medicine practitioners' knowledge and experience” (opens in new tab), International Journal of Impotence Research, vol. 37, pp. 446-447, 2024.
Eliad Amini, Robert Saldivar, Muhammed A. Hammad, David W. Barham, “Malfunction and mechanical failure of the inflatable penile prosthesis: a narrative review of etiologies and management” (opens in new tab), Ame Medical Journal, vol. 9, 2024.
Muhammed Hammad, Adnan El-Achkar, Tuan Nguyen, David Barham, Lawrence Jenkins, Faysal A. Yafi, “The Pandemic, Telemedicine, and Andrology: What Have We Learned?” (opens in new tab), Sexual Medicine Reviews, vol. 11, no. 3, pp. 231-239, 2023.
Roth B.J., Hammad M.A.M., Sultan M.I., Abou Chawareb E., Banton J., Park S.S.H., Perito P.E., Yafi F.A., Raheem O., “Hyaluronic acid and urology: a systematic review and meta-analysis” (opens in new tab), Sexual Medicine Reviews, vol. 13, pp. 52-61, 2025.
Muhammed Hammad, David Barham, Daniar Osmonov, Gorge Hatzichristodoulou, Koenraad van Renterghem, Robert Andrianne, Sung Hun Park, Tobias Kohler, Wayne Hellstrom, Lawrence Jenkins, Faysal A. Yafi, “Long-term assessment of efficacy and safety of the Mini-Jupette sling: 5-year follow-up of the original series” (opens in new tab), Translational Andrology and Urology, vol. 12, no. 5, pp. 859-865, 2023.
Muhammed A M Hammad, Adriana Rush, Charles A Loeb, Jasmin Banton, Elia Abou Chawareb, Narmina Khanmammadova, Rafael R Gevorkyan, David W Barham, Faysal A Yafi, Lawrence C Jenkins, “Multiple sclerosis and hypogonadism: is there a relationship?” (opens in new tab), Sexual Medicine Reviews, vol. 12, no. 2, pp. 178-182, 2024.
Muhammed A Moukhtar Hammad, Tuan Thanh Nguyen, Ryan W. Dobbs, Huy Gia Vuong, Khoa Quy, Hanh Thi Tuyet Ngo, Sohrab Naushad Ali, Joshua Tran, Mohammed Shahait, David I. Lee, “Comparison of Surgical Outcomes between Outpatient and Inpatient Robot-Assisted Radical Prostatectomy: A Meta-analysis” (opens in new tab), Prostate International, vol. 13, pp. 1-9, 2024.
Muhammed A. M. Hammad, R. Omer Yazar, David W. Barham, Babak Azad, Faysal A. Yafi, “Successful treatment of hard flaccid syndrome with multimodal therapy: a case report study” (opens in new tab), International Journal of Impotence Research, vol. 37, pp. 448-450, 2024.
Muhammed A M Hammad, David W Barham, Jay Simhan, Tuan Nguyen, Daniel Swerdloff, Jake Miller, Georgios Hatzichristodoulou, Maxime Sempels, Robert Andrianne, James M Hotaling, Tung-Chin Hsieh, James M Jones, Vaibhav Modgil, Daniar Osmonov, Ian Pearce, Paul Perito, Hossein Sadeghi-Nejad, Alfredo Suarez-Sarmiento Jr, Faysal A Yafi, Martin S Gross, “A multicenter evaluation of penile curvature correction in men with Peyronie's disease undergoing inflatable penile prosthesis placement” (opens in new tab), The Journal of Sexual Medicine, vol. 22, pp. 349-355, 2024.
Hammad M.A.M., Quesada S.G., Belczyk A.L., Ghoniem G.M., “Beyond Glycemic Control: Concurrent GLP-1 Receptor Agonist Use Is Associated with Reduced Urinary Adverse Events Following OnabotulinumtoxinA Treatment in Non-Diabetic Adults with Overactive Bladder” (opens in new tab), Toxins, vol. 17, 2025.
Muhammed A. Moukhtar Hammad, Roshan M. Patel, “Commentary from North America on Bach, T. (2025). Update on New Technology for Management of BPH” (opens in new tab), Primer on Urology, Springer, Cham, pp. 1077-1080, 2025.
Hammad M.A.M., Knoerzer M.T., Ghoniem G.M., “Comparative analysis of postoperative outcomes following hysterectomy versus sacrocolpopexy: Insights from global federated health research network” (opens in new tab), European Journal of Obstetrics and Gynecology and Reproductive Biology X, vol. 28, 2025.
Muhammed A. Moukhtar Hammad, Adnan El-Achkar, David W. Barham, Faysal A. Yafi, “What is the role of the penis in male reproduction?” (opens in new tab), Handbook of Andrology, American Society of Andrology, vol. 3rd Edition, pp. 48, 2023.
Hammad MAM, Barham DW, Yafi FA, “New Artificial Intelligence ChatGPT Performs Poorly on the 2022 Self-assessment Study Program for Urology Editorial Commentaries” (opens in new tab), Urol Pract, vol. 10, no. 4, pp. 415, 2023.
Muhammed Hammad, David Barham, Daniar Osmonov, Gorge Hatzichristodoulou, Koenraad van Renterghem, Robert Andrianne, Sung Hun Park, Tobias Kohler, Wayne Hellstrom, Lawrence Jenkins, Faysal A. Yafi, “Long-term assessment of efficacy and safety of the Mini-Jupette sling: 5-year follow-up of the original series”, 2022. Presented at 2022 Annual Meeting of the Sexual Medicine Society of North America and World Meeting of Sexual Medicine, Miami, FL, October 2022.

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Contact Information

Email: mahammad@uci.edu

Phone: (714) 456-6047

Address: 3800 W. Chapman Avenue, Suite 7200, Orange, CA 92868

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This profile was created with the help of AI.

Last updated on 4/5/2026.