WILLIAM ERICSON-NEILSEN M.D.
NPI 1285976076
Anesthesiology in Jefferson, LA
About William Ericson-neilsen M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM ERICSON-NEILSEN M.D. (NPI 1285976076) is an individual anesthesiology provider in Jefferson, Louisiana, licensed in Louisiana (MD.207427) and active in the NPI registry since March 2013. He is enrolled in Medicare PECOS, is affiliated with West Jefferson Medical Center, and maintains a secondary practice location in Greenville.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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 Ericson-neilsen 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
5Medicare enrollment records show William Ericson-neilsen reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New Orleans, LA 70121
- Reassigned Medicare billing, Louisiana enrollment
- 4,559 clinicians in this Medicare group
New Orleans, LA 70118
- Reassigned Medicare billing, Louisiana enrollment
- 519 clinicians in this Medicare group
New Orleans, LA 70112
- Reassigned Medicare billing, Louisiana enrollment
- 931 clinicians in this Medicare group
La Place, LA 70068
- Reassigned Medicare billing, Louisiana enrollment
- 482 clinicians in this Medicare group
Seneca, SC 29678
- Reassigned Medicare billing, South Carolina enrollment
- Medicare enrollment name: Prisma Health University Medical Group
- 3,281 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
West Jefferson Medical Center
Acute Care Hospitals · Marrero, LAOther 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 70121
NEW ORLEANS, LA 70121
NEW ORLEANS, LA 70121
NEW ORLEANS, LA 70121
NEW ORLEANS, LA 70121
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 Ericson-neilsen's NPI number?
The NPI number for William Ericson-neilsen is 1285976076. It was assigned to this individual provider in the NPPES registry on March 20, 2013.
Where is William Ericson-neilsen located?
William Ericson-neilsen practices at 1514 Jefferson Hwy, Jefferson, LA 70121. The listed phone number is (504) 842-3000.
What is William Ericson-neilsen's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is William Ericson-neilsen enrolled in Medicare?
Yes. William Ericson-neilsen 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 Ericson-neilsen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Ericson-neilsen reassigns Medicare benefits to 5 organizations: Ochsner Clinic LLC (New Orleans, LA), Childrens Hospital Anesthesia Corporation (New Orleans, LA), Louisiana State University School Of Medicine In New Orleans Faculty G (New Orleans, LA), Zephyr Anesthesia, LLC (La Place, LA) and Ghs Partners In Health, Inc. (Seneca, SC). 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 Ericson-neilsen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Ericson-neilsen accept?
Health plans from HMO Louisiana list William Ericson-neilsen 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 Ericson-neilsen affiliated with any hospitals?
According to CMS data, William Ericson-neilsen is affiliated with West Jefferson Medical Center.
When was this NPI record last updated?
The NPPES record for William Ericson-neilsen was last updated on December 12, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 months 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 Ericson-Neilsen, M.D. · NPI 1285976076
Anesthesiology physician in Jefferson, Louisiana. Individual provider, active in the CMS NPPES registry since March 20, 2013.
## Identity
- **NPI:** 1285976076 (Entity type: Individual)
- **Enumerated:** March 20, 2013
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** MD.207427 (Louisiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 1514 JEFFERSON HWY, Jefferson, LA 70121-2429
- **Phone:** (504) 842-3000
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Ochsner Clinic LLC (NPI 1215136080, New Orleans, LA); Childrens Hospital Anesthesia Corporation (NPI 1649362740, New Orleans, LA); Louisiana State University School Of Medicine In New Orleans Faculty G (NPI 1477582526, New Orleans, LA); Zephyr Anesthesia, LLC (NPI 1891087458, La Place, LA); Ghs Partners In Health, Inc. (NPI 1457730814, Seneca, SC) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Tulane University School Of Medicine, class of 2013
## Record status
- **NPPES last updated:** December 12, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1285976076) · Data from the CMS NPPES public registry.