Summary

Dr. David Knowles is a urologist and surgeon who earned his medical degree from Columbia University College of Physicians & Surgeons. With 28 years of experience in medicine, he brings extensive knowledge to his practice in urology and surgical care. Dr. Knowles is fluent in both English and Spanish, allowing him to serve a diverse patient population.

Dr. Knowles practices in Mount Vernon, Illinois, and maintains affiliations with Deaconess Illinois Crossroads and SSM Health Good Samaritan Hospital Mount Vernon. He specializes in treating conditions such as enlarged prostate, kidney stones, and urinary problems that can occur after childbirth. His expertise includes performing diagnostic procedures like cystoscopy and various urine tests to evaluate kidney and bladder health. Patients rate Dr. Knowles 4.4 out of 5 stars on average.

Overview based on verified provider data

Quick Facts

  • accepting new patients
  • 4.4
  • 28 years of experience
  • speaks English, Spanish
  • Columbia University College Of Physicians & Surgeons
  • 27 written reviews
  • 2 specialties
  • 9 areas of expertise
  • 2 board certifications
  • 2 hospital affiliations
  • 3 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. David Ryan Knowles has 3 locations

Advanced Urological Surgeons

4109 S Water Tower PlMount Vernon, IL 62864
Mon7:00 am - 3:30 pm
Tue7:00 am - 3:30 pm
Wed8:00 am - 4:30 pm
Thu7:00 am - 3:30 pm
Fri7:00 am - 3:30 pm
SatClosed
SunClosed

Good Samaritan Surgery Center

2 Good Samaritan Way Ste 200Mount Vernon, IL 62864
Mon6:00 am - 5:00 pm
Tue6:00 am - 5:00 pm
Wed6:00 am - 5:00 pm
Thu6:00 am - 5:00 pm
Fri6:00 am - 5:00 pm
SatClosed
SunClosed

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Dr. David Ryan Knowles, MD
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Dr. David Ryan Knowles, MDDr. Shanmugam Lakshmanan, MDDr. Thomas Jakle WeinbergDr. Narendra Kumar Gupta
UrologySurgerySurgerySurgery
Accepts New Patients
4.4 
2.3 
28 Years of Experience 54 Years of Experience 58 Years of Experience 63 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English, Spanish Speaks English Speaks English
Mount Vernon , ILSalem , ILFort Sam Houston , TXCentralia , IL
Med School: Columbia University College Of Physicians & Surgeons Med School: Madurai Medical College Med School: Wake Forest School Of Medicine Med School: Gandhi Medical College
Current Profile
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Insurance Plans Accepted by Dr. David Ryan Knowles

  • Accepts Medicare

Medical Specialties

Dr. David Ryan Knowles has the following 2 specialties

Specialty Expertise

Dr. David Ryan Knowles has the following 9 areas of expertise

  • Bladder Issues
  • Enlarged Prostate (Prostatic Hyperplasia)
  • Erectile Dysfunction (ED)
  • Kidney Stones
  • Overactive Urinary Bladder
  • Prostate Cancer
  • Prostatitis
  • Surgery
  • Urologic Emergencies

Certifications, License, & Education

28 Years Experience

Dr. David Ryan Knowles holds an expired medical license in the state of Illinois.

Medical License

Medical Doctor with an expired medical license in the state of Illinois that expired in 2026.

Education & Training

Medical School

Graduated from Columbia University College Of Physicians & Surgeons in 1998.

NPI Number

Dr. Knowles' NPI number is 1881699908.

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Frequently Asked Questions

Which hospitals is Dr. David Knowles affiliated with?
Dr. David Knowles is affiliated with Deaconess Illinois Crossroads and SSM HEALTH GOOD SAMARITAN HOSPITAL MOUNT VERNON.
Where is Dr. David Knowles's office located?
Dr. David Knowles's office is located at 4109 S Water Tower Pl, Mount Vernon, IL, 62864.
Does Dr. David Knowles accept virtual/telehealth appointments?
Dr. David Knowles has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Is Dr. David Knowles accepting new patients?
Dr. David Knowles is accepting new patients on Vitals. View Dr. David Knowles's profile on Vitals to make an appointment.
Does Dr. David Knowles accept my insurance?
You can see the insurance plans that Dr. David Knowles accepts on their Vitals profile.

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