A Tradition of Excellence

The physicians of Advanced Urology Institute in Oxford Ocala, FL are recognized locally for their medical expertise and hold key positions in the urological community at both the state and national level. Leadership is a core value of our practice and an honor met with dedication, integrity and commitment. Through innovation and collaboration our practice continues to be recognized for providing leading-edge urology and patient-centered care.

Meet Our Oxford Ocala, FL Urologists


David L. Cunningham, M.D.

Board Certified Urologist

Dr. David Cunningham attended Louisiana State University. He is a member of the American Medical Association, American Urological Association, the Florida Urological Society and others, as well as our Director of Clinical Research.


Mark W. Dersch, M.D.

Board Certified Urologist

Dr. Mark Dersch attended Indiana University School of Medicine and completed his urology residency at Southern Illinois University School of Medicine. His practice in Ocala focuses on stone disease, BPH, and Bladder cancer since 1994.


Saumil Karavadia, M.D.

Board Certified Urologist

Urologist Saumil Karavadia, MD, has recently begun his practice with Advanced Urology Institute. Dr. Karavadia completed his residency with University of Texas Southwestern Medical Center in Dallas, where he served as chief resident.


Edward D. King, M.D., F.A.C.S.

Board Certified Urologist

Dr King a current member of the Board of Directors of the Florida Urological Society and is an Assistant Professor of Urology at the University Of Central Florida College Of Medicine. His practice interests include laparoscopic and robotic surgery.


Nicholas A. Maruniak, M.D., F.C.A.P.

Board Certified Urologist

Dr. Maruniak has been instrumental in recruiting and mentoring pathologists who currently practice the sub specialty of urologic pathology. He is board certified by the American Board of Pathology in Anatomic and Clinical Pathology.


Dinesh S. Rao, M.D.

Board Certified Urologist

Dr. Dinesh Rao earned his medical degree at Duke University, then completed his residency at Duke University Medical Center. His areas of interest include minimally invasive laparoscopic and robotic prostate surgery.​


Harvey C. Taub, M.D.

Board Certified Urologist

After graduation, Dr. Taub moved to Ocala, where he has practiced for over 15 years. He has been Chief of Surgery and Chief of Medical Staff at Munroe Regional Medical Center. His practice focuses on prostate & kidney surgery.

Patient Forms

Very Kind And Understanding Doctor
Dr. Mark Dersch is a wonderful urologist and an excellent surgeon. He was able to remove several kidney stones, including one rather large one, while I was under anesthesia. The surgery only left a small scar on the right side of my back. He sent me home with enough medication to get me through the healing process with very little pain. I trust Dr. Dersch completely and I know he has my best interest at heart. He is a very kind and understanding doctor. I highly recommend him.
AUI Patient
September 20th, 2017
The Staff Was Terrific
Today was my first visit to Dr. Taub and how glad I am that I followed the recommendation of a friend who is also his patient. The staff was terrific and was a prelude to a fantastic experience with Dr. Taub. He was engaging, comedic and professional for the entirety of my visit. His caring manner far and above exceeded my expectations. I am pleased to be his patient.
AUI Patient
January 31st, 2017
Great Confidence in Dr. King
Dr. King and his staff are the best. My father used him years ago ( now passed away..nothing related to condition treated by Dr. King) . Shortly thereafter.. I needed some help and he was really nice and very calm and knowledgeable. He makes patient feel very comfortable. Now .. 6 years later I was referred to a urologist for a recurring problem. I am probably about halfway through what I need to do.. but I have great confidence in Dr. king. He and his staff are very warm and kind to patients.
AUI Patient
June 26th, 2017