William Critchlow

William Critchlow,



  • St. Louis University, St. Louis, Missouri
    Bachelor of Arts in Biology
  • University of Missouri School of Medicine, Columbia, MO
    Doctor of Medicine

Board Certification

American Board of Urology


Castle Connolly Top Doctors Awards


William Critchlow,


Dr. Critchlow grew up in Cape Girardeau, Missouri, before completing his education in St. Louis and Columbia. He then completed urologic surgery training at Mayo Clinic in Phoenix, Arizona where he learned that the needs of the patient come first, effective and successful care treats people and not just diseases, and that medical decisions involve a relationship between the physician and patient. In training, Dr. Critchlow learned robotic surgery techniques for the kidney and prostate, minimally-invasive surgery for kidney stones, and sub-specialized BPH treatments including holmium laser enucleation of the prostate (HoLEP).

Outside of work Dr. Critchlow enjoys spending time with his wife and two dogs, Mizzou football and basketball, the Cardinals, and being outdoors as much as possible, including backpacking, fishing, floating, and camping.

Practice Locations

1103 West Liberty Street
Suite 3045
Farmington, MO 63640

3 St. Elizabeth’s Blvd
Suite 3200
O’Fallon, IL 62269

12855 North Forty Dr
South Tower, Suites 350 & 375
St. Louis, MO 63141-8635

326 Fountains Parkway
Fairview Heights, IL 62208

3844 S. Lindbergh Blvd.
Suite 125
St. Louis, MO 63127

Complete and Understandable Answers
Dr. Critchlow was phenomenal. His explanations and answers to my wife and I were complete and easily understandable. I look forward to seeing him in the future!
Personable Doctor
Dr. Critchlow is very personable and he takes time to explain everything. He personally called me with my test results. I highly recommend him if you are looking for a competent urologist.
Knowledgeable and Understandable
Dr. Critchlow is very knowledgeable and always takes time to explain complex treatment options in a manner that’s easy to understand. It’s nice to have a physician so current on cutting edge techniques and procedures.
Thorough and Kind
Dr. Critchlow was very thorough and explained everything so I could understand. Great bedside manner, highly recommend!
Informative and Encouraging
He is informative, understanding, helpful and encouraging!
Current Patient
Timely and Thorough
He explained everything very well and answered all my questions completely.
Current Patient