WILLIAM MARSHALL GILBERT JR. M.D
NPI 1508210204
Hospitalist in New Orleans, LA
About William Marshall Gilbert Jr. M.d NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM MARSHALL GILBERT JR. M.D (NPI 1508210204) is an individual hospitalist provider in New Orleans, Louisiana, licensed in Louisiana (323356) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS, is affiliated with East Jefferson General Hospital, and is a graduate of University Of Mississippi School Of Medicine (2016).
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
William Marshall Gilbert Jr. M.d is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show William Gilbert reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New Orleans, LA 70112
- Reassigned Medicare billing, Louisiana enrollment
- 851 clinicians in this Medicare group
New Orleans, LA 70163
- Reassigned Medicare billing, Louisiana enrollment
- 313 clinicians in this Medicare group
Birmingham, AL 35233
- Reassigned Medicare billing, Alabama enrollment
- 4,494 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
East Jefferson General Hospital
Acute Care Hospitals · Metairie, LAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 70112 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEW ORLEANS, LA 70112
NEW ORLEANS, LA 70112
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is William Gilbert's NPI number?
The NPI number for William Gilbert is 1508210204. It was assigned to this individual provider in the NPPES registry on April 19, 2016.
Where is William Gilbert located?
William Gilbert practices at 1415 Tulane Ave, New Orleans, LA 70112. The listed phone number is (504) 988-5263.
What is William Gilbert's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is William Gilbert enrolled in Medicare?
Yes. William Gilbert is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for William Gilbert's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Gilbert reassigns Medicare benefits to 3 organizations: Administrators Of The Tulane Educational Fund (New Orleans, LA), East Jefferson Physicians Group LLC (New Orleans, LA) and University Of Alabama Health Services Foundation, PC (Birmingham, AL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for William Gilbert's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Gilbert accept?
Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and HMO Louisiana list William Gilbert as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is William Gilbert affiliated with any hospitals?
According to CMS data, William Gilbert is affiliated with East Jefferson General Hospital.
When was this NPI record last updated?
The NPPES record for William Gilbert was last updated on July 21, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# William Marshall Gilbert Jr., M.D · NPI 1508210204
Hospitalist physician in New Orleans, Louisiana. Individual provider, active in the CMS NPPES registry since April 19, 2016.
## Identity
- **NPI:** 1508210204 (Entity type: Individual)
- **Enumerated:** April 19, 2016
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 323356 (Louisiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 1415 TULANE AVE, New Orleans, LA 70112-2600
- **Phone:** (504) 988-5263
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Administrators Of The Tulane Educational Fund (NPI 1528014164, New Orleans, LA); East Jefferson Physicians Group LLC (NPI 1922293372, New Orleans, LA); University Of Alabama Health Services Foundation, PC (NPI 1164617205, Birmingham, AL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Mississippi School Of Medicine, class of 2016
## Record status
- **NPPES last updated:** July 21, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1508210204) · Data from the CMS NPPES public registry.