John Grady Williams, MD

Diagnostic radiologist in Austin, Texas · NPI 1902855281

John Williams is one of 298 diagnostic radiologists practicing in Austin, Texas. John Williams practices with Austin Radiological Association and Singleton Associates PA.

Registry record (NPPES)

NPI
1902855281
Type
Type 1 · Individual
Primary taxonomy
Radiology, Diagnostic Radiology · 2085R0202X
Address on file
12554 Riata Vista Cir
Austin, TX 78727-6431
(512) 795-5100
Enumerated
May 6, 2006
Record last updated
Oct 3, 2018
License states listed
TX

Medicare (CMS)

Enrollment
Medicare-enrolled in TX
Diagnostic Radiology
Revalidation due
No date set by CMS

The registry stops here. NPivot keeps going.

  • Part D prescribing
  • Procedure volumes by CPT code
  • Group affiliations and colleagues
  • Full enrollment history
See the full profile free Free account. No card, no call.

Practice locations

More diagnostic radiologists in Austin

Updated August 2026. Practice locations and specialty come from the CMS Doctors and Clinicians file, the registry record from NPPES, and enrollment from CMS Medicare enrollment files. NPI records are corrected at the source, through NPPES.