NPPES file of Aug 9, 2026

Gregory Lloyd Johnson, MD

Diagnostic Radiology Physician · Dallas, TX

Gregory Lloyd Johnson, MD is a diagnostic radiology physician with a practice address in Dallas, Texas, and NPI 1326025057, issued on Dec 23, 2005. Check the license (Texas Q9645, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1326025057
Name
Gregory Lloyd Johnson
Credential
MD
Primary taxonomy
Diagnostic Radiology Physician 2085R0202X
License numbers
Q9645 TX
MD00044283 WA
66469 CT
059314 GA
54635 KY
and 2 more
Self-reported in NPPES; status is on the state search
Practice location
2825 Oak Lawn Ave Unit 192749, Dallas, TX 75219
Phone
(844) 389-5711
Enumerated
Dec 23, 2005
Record last updated
Apr 23, 2026
Fax
(877) 880-2039
Medicare enrollment
Enrolled (PECOS I20050427000625); accepts Medicare assignment
Medical or professional school
State University Of New York Downstate Medical Center, 1994
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
Download card Updates feed

8 nearest diagnostic radiology physician records → All 3,124 in Texas → Look up another NPI →

Also registered at 2825 Oak Lawn Ave Unit 192749

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Gautam Agrawal, M.D.Diagnostic Radiology Physician1285717389
  2. Leah Ahn, MDDiagnostic Radiology Physician1306291166
  3. Se Jin Ahn, M.D.Diagnostic Radiology Physician1083020820
  4. Matthew Alvin, MD, MBA, MS, MADiagnostic Radiology Physician1518393768
  5. Sean Burn, MDDiagnostic Radiology Physician1669852844
  6. Connor Byrne, MDDiagnostic Radiology Physician1134680499

Verify Gregory Lloyd Johnson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license Q9645    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Texas license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

Bills Medicare through one group practice

  1. Osu Radiology LLCBellevue, WA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Gregory Lloyd Johnson among 3,124 diagnostic radiology physician records in Texas

Gregory Lloyd Johnson, MD is one of 3,124 diagnostic radiology physician records with a practice address in Texas. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 85% newer
  • In a Medicare fileYes · 77% of these records are
  • In the CMS Doctors and Clinicians fileYes · 73% of these records are
  • Graduated1994 · median 2003 among the 2,277 with a school on file
  • Record last updated2026 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

495 diagnostic radiology physician records list a practice address in Dallas

They are 495 of the 36,304 NPPES records with a practice address in Dallas, and 3,124 diagnostic radiology physician records in Texas.

All 3,124 in Texas → Every provider in Dallas → Diagnostic Radiology Physician nationwide →

The 8 diagnostic radiology physician records with the nearest ZIP codes

  1. Gautam Agrawal, M.D.Dallas, TX 752191285717389
  2. Juliet Fallah, M.D.Dallas, TX 752191841275815
  3. Nepenthe Fong, MDDallas, TX 752191922185875
  4. Marchelle Giannini, M.D.Dallas, TX 752191174588503
  5. Marc Gosselin, MDDallas, TX 752191306854823
  6. Edward Herskovits, MDDallas, TX 752191568490605
  7. Brian Kim, M.D.Dallas, TX 752191669558367
  8. Paul Knechtges, MDDallas, TX 752191518048636

Common questions

What is Gregory Lloyd Johnson, MD's NPI number?

Gregory Lloyd Johnson, MD's National Provider Identifier (NPI) is 1326025057, issued on Dec 23, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Gregory Lloyd Johnson, MD located?

The NPPES record lists a practice address at 2825 Oak Lawn Ave Unit 192749, Dallas, TX, 75219. Phone: (844) 389-5711. Providers update this record themselves, so call before visiting.

How can I verify Gregory Lloyd Johnson, MD's license?

NPPES lists Texas license number Q9645, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.