WILLIAM M ELLIS III D.O.
NPI 1336132141
Anesthesiology in Alexandria, LA
About William M Ellis Iii D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM M ELLIS III D.O. (NPI 1336132141) is an individual anesthesiology provider in Alexandria, Louisiana, licensed in Louisiana (020195) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS, is affiliated with Jackson-madison County General Hospital, and maintains a secondary practice location in Kingsport.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 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 M Ellis Iii D.o. 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
4Medicare enrollment records show William Ellis reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Olla, LA 71465
- Reassigned Medicare billing, Louisiana enrollment
- Medicare enrollment name: Lasalle Parish Hospital Service Dist No1
- 75 clinicians in this Medicare group
Shreveport, LA 71103
- Reassigned Medicare billing, Louisiana enrollment
- 146 clinicians in this Medicare group
Jackson, TN 38301
- Reassigned Medicare billing, Tennessee enrollment
- 190 clinicians in this Medicare group
Johnson City, TN 37604
- Reassigned Medicare billing, Tennessee enrollment
- Medicare enrollment name: Paragon Anesthesia PC
- 294 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.
Jackson-Madison County General Hospital
Acute Care Hospitals · Jackson, TNMedicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Reported Quality Measures
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.
ALEXANDRIA, LA 71301
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 Ellis's NPI number?
The NPI number for William Ellis is 1336132141. It was assigned to this individual provider in the NPPES registry on August 26, 2005.
Where is William Ellis located?
William Ellis practices at 211 4th St, Alexandria, LA 71301. The listed phone number is (318) 473-3000.
What is William Ellis's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is William Ellis enrolled in Medicare?
Yes. William Ellis 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 Ellis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Ellis reassigns Medicare benefits to 4 organizations: Lasalle Parish Hospital Service District #1 (Olla, LA), Willis Knighton Medical Center Inc. Crna Group (Shreveport, LA), Medical Center Anesthesia Inc. (Jackson, TN) and East Tennessee Ambulatory Surgery Center LLC (Johnson City, TN). 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 Ellis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Ellis accept?
Health plans from Cigna Healthcare and HMO Louisiana list William Ellis 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 Ellis affiliated with any hospitals?
According to CMS data, William Ellis is affiliated with Jackson-Madison County General Hospital.
When was this NPI record last updated?
The NPPES record for William Ellis was last updated on November 5, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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 M Ellis III, D.O. · NPI 1336132141
Anesthesiology physician in Alexandria, Louisiana. Individual provider, active in the CMS NPPES registry since August 26, 2005.
## Identity
- **NPI:** 1336132141 (Entity type: Individual)
- **Enumerated:** August 26, 2005
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 020195 (Louisiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 211 4TH ST, Alexandria, LA 71301-8421
- **Phone:** (318) 473-3000
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Lasalle Parish Hospital Service District #1 (NPI 1053415745, Olla, LA); Willis Knighton Medical Center Inc. Crna Group (NPI 1174546097, Shreveport, LA); Medical Center Anesthesia Inc. (NPI 1447591730, Jackson, TN); East Tennessee Ambulatory Surgery Center LLC (NPI 1659360071, Johnson City, TN) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Missouri, Kansas City, School Of Medicine, class of 1988
## Record status
- **NPPES last updated:** November 5, 2025
- **Other identifiers:** Medicaid 1934518 (LA); Other 050022020
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Source: [NPI Profile](https://npiprofile.com/npi/1336132141) · Data from the CMS NPPES public registry.