Long Island's Premier
Men's Health &
Sexual Medicine Practice
Expert, discreet, and results-driven care to restore confidence and performance.
Expert, discreet, and results-driven care to restore confidence and performance.
Dr. Mahyar Kashani is a board-eligible urologist and specialist in men's sexual health, serving patients across Long Island and New York. As Director of Male Sexual Health and Assistant Professor of Urology at Mount Sinai South Nassau, he focuses on the diagnosis and treatment of Erectile Dysfunction, Low Testosterone, Peyronie's Disease, and Male Performance Concerns.
Dr. Kashani provides comprehensive, physician-led care—offering everything from medical therapy to advanced procedural treatments, including penile injections and implants. His approach is discreet, evidence-based, and tailored to each patient's goals.
Advanced medical and surgical solutions to restore your quality of life.
Comprehensive evaluation and treatment for all stages of ED, including advanced options when first-line treatments have failed.
Hormonal evaluation and optimization for men experiencing fatigue, low libido, mood changes, or structural sexual health concerns.
Expert management of common and complex urinary and kidney conditions, from diagnosis through treatment.
Precision in-office and outpatient surgical procedures performed with expert technique and minimal downtime.
Free Self-Assessment
Most men wait years before talking to a doctor about Erectile Dysfunctio, Low Testosterone, or urinary symptoms. You don't have to. Answer 10 questions and we'll tell you exactly where you stand.
It takes 2 minutes. No account. No personal info required.
Take the Free Assessment →100% confidential · Used by men across Long Island · Results in under 3 minutes
Read why hundreds of men trust Dr. Kashani for their urological care.
"My experience with Dr. Kashani was amazing. He made me feel extremely comfortable talking about a very sensitive subject and I felt heard and optimistic upon leaving."
— Frank M."I just had a visit with Dr. Kashani for the first time and he was an AMAZING doctor. Very understanding, actually listened to my problems and had multiple solutions. One of the friendliest Doctors and staff I've ever had in a medical office."
— Jason H."Dr. Kashani did the surgery for my penile implant last week. His commitment to excellence, detail and perfection are only rivaled by his kindness and compassion. He showed videos, talked about infection and every pitfall that could occur with the procedure and talked about steps he takes to avoid them."
— Adam G.We understand that men's health issues are sensitive. You deserve a specialist who combines top-tier medical expertise with a compassionate, private approach.
Straight answers on men's health — written by Dr. Kashani for Long Island men.
Who we are, what we treat, and why Dr. Kashani built a practice dedicated to helping men reclaim confidence and quality of life.
Read Article → Erectile DysfunctionA patient-focused guide to sildenafil, tadalafil, and newer combination approaches for men who want effective, discreet, evidence-based treatment.
Read Article → Penile InjectionsA practical guide to ED injection therapy, including alprostadil and Trimix, for men who want reliable results when oral medications are not enough.
Read Article →Restore your confidence and performance with expert, discreet care right here on Long Island.
Mount Sinai Doctors
2 Lincoln Avenue, Suite 102