Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Gregory Lloyd Johnson, MD

Individual provider Diagnostic Radiology Physician · NPI 1326025057

Gregory Lloyd Johnson, MD practises Diagnostic Radiology in Dallas, Texas. Graduated from State University of New York Downstate Medical Center in 1994, 32 years ago. Practices with Osu Radiology LLC, a 180-clinician group and accepts Medicare assignment. Licensed in Connecticut, Georgia, Kentucky and North Carolina and 3 more.

Years since qualifying
32
Trained at
State University of New York Downstate Medical Center
Licensed in
CT, GA, KY, NC, OH, TX
In the registry since
2005
Specialties on file
7
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

2825 Oak Lawn Ave Unit 192749
Dallas, TX 75219-4688
Phone: (844) 389-5711
Fax: (877) 880-2039
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence MD00044283 (WA)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence 059314 (GA)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence 2005-01647 (NC)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence 35.137915 (OH)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence 66469 (CT)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence 54635 (KY)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence Q9645 (TX)

Record details

NPI number1326025057
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 23, 2005
Last updated in NPPESApril 23, 2026
Certification dateApril 23, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolSTATE UNIVERSITY OF NEW YORK DOWNSTATE MEDICAL CENTER
Graduated 1994 (32 years in practice)
Group practice Osu Radiology Llc — 180 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients1,467
Services billed 1,724 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Also affiliated with 1 hospital, which CMS identifies by certification number only.

Colleagues at Osu Radiology LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 180 clinicians in the practice; 12 are shown here.

Other providers in Dallas