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Expert is board certified in urology with a special focus on clinical urology. He received his MD from Johns Hopkins University School of Medicine in 1990. He completed his internship and resident training in general surgery in 1992 and additional resident training in urology in 1996 having obtained the chief resident position his final year at Columbia-Presbyterian Medical Center.

He is a specialist in urologic oncology and urologic oncologic surgery for 12 years serving as a Professor of Urology at a prestigious university. He also serves as a Director of Urology and Director of Residents' Clinic at a major teaching hospital. As Director of Urology, he helped develop and maintain urology service at a 250-bed hospital, serving almost 11,000 outpatient visits and 700 surgical procedures per year. He also built, and successfully recruited faculty members for, on-site state-of-the-art urodynamics suite and was also involved in recruiting faculty members for erectile dysfunction specialty. As the Director of Residents’ Clinic, his responsibility is to ensure that urology residents take primary, but supervised, care of patients at a major teaching hospital that serves almost 1800 patients per year. He also developed a curriculum for different clinic times for urologic subspecialties in stone disease, neurourology and voiding dysfunction, erectile dysfunction, and oncology/general urology.

He has authored over 200 publications in urology and has participated in numerous clinical trials for the advancement of clinical urology research. His publications have included original papers on topics such as transplanted RPE, retinal degeneration, inguinal varicocelectomy, anti-sperm antibodies, vasectomy, sperm galactosyl receptor, prostate cancer treatment and detection, pelvic exenteration, lectin variant, post-prostatectomy urinary incontinence, Boyarsky symptoms, benign prostatic hyperplasia, ejaculatory duct obstruction, infertile male, metastatic renal cell carcinoma, bone metastases, sperm count, radical prostatectomy, hormone-resistant prostate cancer cells, apoptotic agents, PSA variability in prostate cancer diagnosis, recombinant defective adenovirus agent, testicular cancer, orchidectomy, castration and rate ventral prostate gland, xenograft model by increasing apoptosis, Exisulind, carcinoma of the urinary bladder, M-VAC chemotherapy, ejaculatory duct obstruction, retropubic prostatectomy, sporadic renal cortical tumors, cytoreductive nephrectomy with tumor thrombus, transurethral resection, Clomiphene citrate, male hypogonadism, prostatic intra-epithelial neoplasia, renal cortical tumors and radiotherapeutic alternatives to prostate cancer.