NPI age
19 years
Enumerated 2007-03-27
● Active
Type 1 · Individual
DR. John Andrew Williamson, M.D.
Williamson is 1 of 148 radiology providers in Austin and 1 of 3776 in Texas.
Primary specialty
Radiology
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2018-03-15
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 3776 active radiology providers in Texas.
NPI age
19 years
≈ at median (19 yr)
State licenses
1 state
18% of peers hold multiple states
Subspecialties
0
36% of peers hold subspecialties
NPI lifetime · 2007 → 2026
2007-03Enumerated in NPPES
2007
2026
Where they practice
Practice location
12554 Riata Vista Cir
Austin, TX 787276431
Mailing address
12554 Riata Vista Cir
Austin, TX 787276431
Specialties
-
Radiology PrimaryA radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
Practice context
Part of a multi-provider practice. 120 other active providers share this practice address in NPPES.
Recently enumerated nearby: 2 new radiology providers have been added in Austin in the last 180 days.
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