NPI age
20 years
Enumerated 2005-12-23
● Active
Type 1 · Individual
Gregory Lloyd Johnson, MD
Johnson is 1 of 504 radiology providers in Dallas and 1 of 3776 in Texas.
Primary specialty
Radiology
Plus 6 subspecialties
Licensed in
WA, GA, NC, OH, CT, KY, TX
7 states
Status
Active
No deactivations on record
Last NPPES update
2026-04-23
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 3776 active radiology providers in Texas.
NPI age
20 years
≈ at median (19 yr)
State licenses
7 states
Top 81% — 18% of peers are multi-state
Subspecialties
0
36% of peers hold subspecialties
NPI lifetime · 2005 → 2026
2005-12Enumerated in NPPES
2005
2026
Where they practice
Practice location
2825 Oak Lawn Ave Unit 192749
Dallas, TX 752194688
Mailing address
2825 Oak Lawn Ave Unit 192749
Dallas, TX 752194688
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. 58 other active providers share this practice address in NPPES.
Recently enumerated nearby: 2 new radiology providers have been added in Dallas in the last 180 days.
See all →
Provyx · Custom healthcare lists
Need all 3776 Radiology providers in Texas?
Get the full list as a CSV with verified work emails, direct phones, and LinkedIn URLs.
Request a quote →How to verify this provider
- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
- Check the state license is currently active.State licensing boards publish current status; NPPES does not.
- Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.