At Stony Brook Eastern Long Island Hospital, patients receive comprehensive, patient-centered urologic care from both Dr. Jeffrey Lee and Anne Klassert, MS, RN, ANP-BC, CUNP, each bringing specialized expertise and a shared commitment to improving quality of life.

Dr. Jeffrey Lee is a fellowship-trained urologist who focuses on delivering individualized care, particularly for patients with complex urologic conditions. His expertise includes genitourinary reconstructive surgery and prosthetics, with a clinical focus on disorders of the male urethra and external genitalia, erectile dysfunction, penile curvature, and complications related to prostate cancer treatment. Dr. Lee earned his medical degree from Loma Linda University, completed his urology residency at Maimonides Medical Center, and pursued advanced fellowship training in reconstructive urology and prosthetics at University of California, Irvine. He is an active member of the Society of Genitourinary Reconstructive Surgeons (GURS).

Anne Klassert, MS, RN, ANP-BC, CUNP brings decades of experience in urologic care, with a strong emphasis on accessible, compassionate treatment. Since beginning her career as a Registered Nurse in 1983, she has held multiple clinical and leadership roles. After earning her Master’s Degree in Adult Health from Stony Brook University, she transitioned to her role as an Adult Nurse Practitioner in urology in 1996. She specializes in general and female urology, treating conditions such as BPH, elevated PSA, urinary tract infections, overactive bladder, and incontinence. A certified Adult and Urology Nurse Practitioner, she has held leadership roles in professional organizations and was named Suffolk County Nurse of the Year.

Together, Dr. Lee and Ms. Klassert provide a well-rounded approach to urologic care, combining advanced surgical expertise with long-standing clinical experience to support patients at every stage of treatment.

Urology Services

• Diagnosis and treatment of the following cancers:
  • Bladder Cancer
  • Kidney Cancer
  • Prostate Cancer
  • Testicular Cancer
• Erectile Dysfunction
• Diagnosis and treatment of enlarged prostate (BPH)
• Incontinence Male/Female
• Kidney Stone Disease
• Kidney stone treatment and prevention
• Non-Cancerous Prostate Disease
• Peyronie's Disease
• Sacral Nerve Stimulation
• Shock wave lithotripsy
• Stress Incontinence
• Urge Incontinence – "Overactive Bladder"
• Urethral Stricture Disease

• Disorder of external genitalia such as Buried Penis, Hidradenitis Suppurativa, and Scrotal Lymphedema