DR. WILLIAM W ALDEN M.D.
NPI 1427036656
Internal Medicine in Metairie, LA
About Dr. William W Alden M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM W ALDEN M.D. (NPI 1427036656) is an individual internal medicine provider in Metairie, Louisiana, licensed in Louisiana (024150) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, is affiliated with St Tammany Parish Hospital, and is a graduate of Other (1994).
NPPES Registry Identity
Specialties & Licenses 4
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
Dr. William W Alden 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 Reassignment
Medicare enrollment records show William Alden reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Kenner, LA 70065
- Reassigned Medicare billing, Louisiana enrollment
- Medicare enrollment name: East Jefferson Physicians Group LLC
- 313 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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Tammany Parish Hospital
Acute Care Hospitals · Covington, LAEast Jefferson General Hospital
Acute Care Hospitals · Metairie, LAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 70006 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 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Alden's NPI number?
The NPI number for William Alden is 1427036656. It was assigned to this individual provider in the NPPES registry on January 6, 2006.
Where is William Alden located?
William Alden practices at 3941 Houma Blvd Ste 1B, Metairie, LA 70006. The listed phone number is (504) 320-2005.
What is William Alden's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is William Alden enrolled in Medicare?
Yes. William Alden 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 organization bills Medicare for William Alden's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Alden reassigns Medicare benefits to East Jefferson Physicians Group Urgent Care (Kenner, LA). The 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 Alden's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Alden accept?
Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Blue Cross and Blue Shield of Louisiana and 1 other insurer list William Alden 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 Alden affiliated with any hospitals?
According to CMS data, William Alden is affiliated with St Tammany Parish Hospital and East Jefferson General Hospital.
When was this NPI record last updated?
The NPPES record for William Alden was last updated on September 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# Dr. William W Alden, M.D. · NPI 1427036656
Internal Medicine physician in Metairie, Louisiana. Individual provider, active in the CMS NPPES registry since January 6, 2006.
## Identity
- **NPI:** 1427036656 (Entity type: Individual)
- **Enumerated:** January 6, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 024150 (Louisiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 3941 HOUMA BLVD STE 1B, Metairie, LA 70006-2920
- **Phone:** (504) 320-2005 · **Fax:** (800) 816-5191
## 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:** East Jefferson Physicians Group Urgent Care (NPI 1053859082, Kenner, LA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1994
## Record status
- **NPPES last updated:** September 2, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1427036656) · Data from the CMS NPPES public registry.