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A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Learn more about Dr. John Williams:

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  1. Qualifications
  2. What's important to you

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Patient Reviews

Patient comments (1)

The overall average patient rating of Dr. John Williams is Average. Dr. Williams has been reviewed by 2 patients who have provided 1 comments. The rating is 3 out of 5 stars.

Patient Ratings
Ease of Appointment 5.0
Promptness 5.0
Courteous Staff 5.0
Accurate Diagnosis 5.0
Bedside Manner 5.0
Spends Time with Me 5.0
Follows Up After Visit 5.0

Specialties & Research

Dr. John Williams, MD is board certified in Urology.

  • He has special expertise in 8 areas:
  • Erectile Dysfunction (ED)
  • Impotence (Vasculogenic Impotence)
  • Kidney Cancer
  • Kidney Stones (Nephrocalcinosis)
  • Overactive Urinary Bladder
  • Prostate Diseases (Prostatic Diseases)
  • Urinary Bladder Cancer
  • Urogenital Cancer (Genitourinary)

Education & Awards

Dr. Williams graduated from Georgetown University, Washington.


Dr. Williams has 7 hospital affiliations:

  • New York Presbyterian Hospital / Columbia 
  • NewYork-Presbyterian / Weill Cornell 


  • Spanish

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Additional Information
Dr. John Joseph Williams MD is a male Urologist, has 45 years of experience and practices in Urology.
Where does Dr. John J. Williams practice?
Dr. John Williams has 1 office location.
Dr. John Williams practices Urology near New York, NY.
See New York Urologists.