William A. Gregoire, M.D.
Diagnostic Radiology Physician · Baton Rouge, LA
William A. Gregoire, M.D. is a diagnostic radiology physician with a practice address in Baton Rouge, Louisiana, and NPI 1154343184, issued on Jul 25, 2006. Check the license (Louisiana 11735R, as entered in NPPES) on the Louisiana State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- William A. Gregoire
- Credential
- M.D.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- 11735R LA
Self-reported in NPPES; status is on the state search - Practice location
- 5422 Dijon Dr, Baton Rouge, LA 70808
- Phone
- (225) 769-9337
- Enumerated
- Jul 25, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 1678490 LA
- Medicare enrollment
- Enrolled (PECOS I20040218000709); accepts Medicare assignment
- Medical or professional school
- Louisiana State University School Of Medicine In New Orleans, 1991
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 506 in Louisiana → Look up another NPI →
Also registered at 5422 Dijon Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Chad Aultman, M.D.Diagnostic Radiology Physician1902826233
- Robert Branstetter, M.D.Diagnostic Radiology Physician1497778146
- Robert Burris, M.D.Diagnostic Radiology Physician1639191703
- Jacques De La Bretonne, M.D.Diagnostic Radiology Physician1922041334
- Thomas Demars, M.D.Diagnostic Radiology Physician1194744193
- Jeffrey Demouy, M.D.Diagnostic Radiology Physician1528081254
Verify William A. Gregoire in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersLouisiana State Board of Medical Examiners
Search for license 11735RCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through 5 group practices
- Baton Rouge Clinic, A Medical CorporationBaton Rouge, LA
- Baton Rouge Radiology Group IncLutcher, LA
- Neuromedical CenterBaton Rouge, LA
- North Oaks Medical Center LLCHammond, LA
- Ochsner Clinic LLCBaton Rouge, LA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William A. Gregoire among 506 diagnostic radiology physician records in Louisiana
William A. Gregoire, M.D. is one of 506 diagnostic radiology physician records with a practice address in Louisiana. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 17% of them.
- NPI issued2006 · 17% of these records are older, 40% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1991 · median 2001 among the 351 with a school on file
- Record last updated2007 · 69% 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 Louisiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Diagnostic Radiology Physician providers in Louisiana
There are 506 diagnostic radiology physician records in Louisiana.
All 506 in Louisiana → Every provider in Baton Rouge → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Chad Aultman, M.D.Baton Rouge, LA 708081902826233
- Robert Burris, M.D.Baton Rouge, LA 708081639191703
- Brant Casford, MDBaton Rouge, LA 708081780658005
- Jacques De La Bretonne, M.D.Baton Rouge, LA 708081922041334
- Thomas Demars, M.D.Baton Rouge, LA 708081194744193
- Keith Gibson, M.D.Baton Rouge, LA 708081841270592
- Richard Hanson, M.D.Baton Rouge, LA 708081851312607
- Robert Hayden, M.D.Baton Rouge, LA 708081750361572
Common questions
What is William A. Gregoire, M.D.'s NPI number?
William A. Gregoire, M.D.'s National Provider Identifier (NPI) is 1154343184, issued on Jul 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William A. Gregoire, M.D. located?
The NPPES record lists a practice address at 5422 Dijon Dr, Baton Rouge, LA, 70808. Phone: (225) 769-9337. Providers update this record themselves, so call before visiting.
How can I verify William A. Gregoire, M.D.'s license?
NPPES lists Louisiana license number 11735R, as entered by the provider. Search the Louisiana State Board of Medical Examiners at https://www.lsbme.la.gov/. 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.
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.