Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.

William A Gregoire, MD

Individual provider Diagnostic Radiology Physician · NPI 1154343184

William A Gregoire, MD practises Diagnostic Radiology in Baton Rouge, Louisiana. Graduated from Louisiana State University School of Medicine in New Orleans in 1991, 35 years ago. Practices with Neuromedical Center, a 113-clinician group and accepts Medicare assignment. Licensed in Louisiana.

Years since qualifying
35
Trained at
Louisiana State University School of Medicine in New Orleans
Licensed in
LA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

5422 Dijon Dr
Baton Rouge, LA 70808-4315 Not confirmed with CMS for 19 years — call before visiting
Phone: (225) 769-9337
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 11735R (LA)

Record details

NPI number1154343184
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 25, 2006
Last updated in NPPESJuly 8, 2007

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolLOUISIANA STATE UNIVERSITY SCHOOL OF MEDICINE IN NEW ORLEANS
Graduated 1991 (35 years in practice)
Group practice Neuromedical Center — 113 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations17 on file with Medicare

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 patients3,351
Services billed 14,677 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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.

Colleagues at Neuromedical Center

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 113 clinicians in the practice; 12 are shown here.

Other providers in Baton Rouge