Dr. Garrett Lischer has been practicing general urology since 2004.  His areas of interest include bladder and prostate cancer, including robotic prostatectomy, erectile dysfunction, including penile prosthesis, male sexual health issues, testicular pain, incontinence in men and women, kidney stone disease, and low testosterone. He also focuses on Peyronie’s Disease, urinary tract infection, and voiding dysfunction in men and women.  Dr. Lischer also performs the UroLIft® and Rezum® procedures for BPH/enlarged prostate, and advanced treatments for overactive bladder (OAB) including neuromodulation therapy (Interstim®) and BOTOX®.

Dr. Lischer has been past Chief of Surgery at Baptist West Hospital and has served on numerous hospital advisory committees. He serves on the board of directors for the Knox Area Stone Center.

He maintains membership in many professional societies including the Mayo Fellows Association, The American Medical Association, The American Urologic Association, the American College of Surgeons and the American Association of Clinical Urologists. For the advancement of the field, Dr. Lischer has authored research grants, published professional articles and presented papers, abstracts and videos at professional urological assemblies.

He is certified by the American Board of Urology and is a Fellow of the American College of Surgeons.

Read More


  • Benign Prostatic Hyperplasia/BPH
  • Bladder Cancer
  • Erectile Dysfunction
  • Female Incontinence
  • Kidney Stones
  • Low Testosterone
  • Male Incontinence
  • Male Sexual Dysfunction
  • Overactive Bladder (OAB)
  • Penile Prosthesis
  • Peyronie's Disease
  • Prostate Cancer
  • Robotic Prostatectomy
  • Stone Disease
  • UroLift
  • UTI
  • Vaginal rejuvenation
  • Voiding dysfunction

Education and Achievements

Washington and Lee University, B.A., Cum Laude
University of Texas Southwestern Medical School, M.D.
Mayo Clinic, General Surgery Internship
Mayo Clinic, Urology Residency
American Board of Urology
Fellow, American College of Surgeons
Mayo Fellows Association
American Urological Association
Alpha Omega Alpha Honor Medical Society

Office Locations

Knoxville – Park West II

9245 Park West Blvd, Knoxville, TN 37923, US

Oak Ridge

800 Oak Ridge Turnpike, Suite A101, Oak Ridge, TN 37830, US
What Patients are Saying About Dr. Lischer

“Dr. Lischer is possibly, if not the greatest, doctor I have ever met.”

“All questions were answered and issues resolved with my condition with the best outcome I have had for this particular condition. Thank you.”

“Dr. Lischer’s care was great with no problems.”

“Dr. Lisher is the best! He listened, diagnosed my problem perfectly. Then corrected another physicians mistake. If he says he can help you, you can trust him. I highly recommend him.”


Lorem ipsum lorem ipsum.

Author Name
Contact Us

Appointments & Information

*If this is an emergency, please call 911 immediately.

Please provide your email address and phone number and a Tennessee Urology representative will contact you shortly to assist with your question or issue.

Monday–Friday, 8:30 a.m. to 4:30 p.m.

Contact Us