NORTHWOODS UROLOGY - Key Persons


Dr. Paul J. Rizk

Dr. Rizk joined Northwoods Urology in August 2023. Originally from Houston, he attended Yale University for his undergraduate studies, where he majored in Biology. He earned his medical degree from Baylor College of Medicine in Houston. He completed his General Surgery internship and Urology residency at the University of Miami / Jackson Health System in Florida. Dr. Rizk's professional interests include men's health, men's and women's voiding dysfunction and incontinence, urinary stone disease, as well as laser and robotic surgery. Dr. Rizk is fluent in four languages: English, French, Spanish and Arabic.

John G. Giannakis

Dr. Giannakis earned his medical degree from Oregon Health Sciences University Medical School in Portland Oregon. He received his surgery and urology training at the University of Texas Health Science Center at Houston. During his urological residency he served as Chief Resident in Urology. He has been practicing in the field of urology since 1991.

Michael F. Graham

Job Titles:
  • Clinical Instructor in Surgery / Urology at the University of Texas Health Science Center
Dr. Michael Graham joined Northwoods Urology in July of 2001. He earned his medical degree from Baylor College of Medicine in Houston, Texas. He completed his residency in general surgery at the University of Texas Health Sciences Center in Houston. He completed his residency in general urology at Hermann Hospital and was an acting fellow M.D. at the Anderson Cancer Center from 1995 to 1996. Dr. Graham has been a clinical instructor in surgery/urology at the University of Texas Health Science Center at Houston since 1997. Dr. Graham is board certified by the American Board of Urology.

Paul R. Kenworthy

Job Titles:
  • First Physician
Dr. Kenworthy earned his M.D. from The Ohio State University College of Medicine. He completed an internship in General Surgery and residency in Urology at the University of Texas Health Science Center at Houston and MD Anderson Cancer Center. During residency, his clinical research was published in journals Urology and The Journal of Urology, as well as in several scientific proceedings and presentations. Dr Kenworthy is the first physician in the Houston area to earn this exclusive award. His designation as a Center of Excellence is based on achieving a high level of training and experience with the UroLift System, consistently delivering excellent patient outcomes with UroLift®, and providing exemplary overall care to men suffering from urinary tract symptoms.