WILLIAM CHIANG MD
NPI 1194256867
Anesthesiology - Pain Medicine in Hammond, LA
About William Chiang Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM CHIANG MD (NPI 1194256867) is an individual pain medicine provider in Hammond, Louisiana, licensed in Louisiana (331557) and active in the NPI registry since March 2017. He is enrolled in Medicare PECOS, is affiliated with Avala, and maintains a secondary practice location in Jackson.
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 Chiang Md 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 Chiang reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Covington, LA 70433
- Reassigned Medicare billing, Louisiana enrollment
- 22 clinicians in this Medicare group
Covington, LA 70433
- Reassigned Medicare billing, Louisiana enrollment
- 7 clinicians in this Medicare group
Jackson, MS 39213
- Reassigned Medicare billing, Mississippi enrollment
- 1,932 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 7
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.
Avala
Acute Care Hospitals · Covington, LAMedicare 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.
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 Chiang's NPI number?
The NPI number for William Chiang is 1194256867. It was assigned to this individual provider in the NPPES registry on March 24, 2017.
Where is William Chiang located?
William Chiang practices at 19065 Dr John Lambert Dr Ste 2000-A, Hammond, LA 70403. The listed phone number is (985) 338-2423.
What is William Chiang's specialty?
The primary specialty registered for this NPI is Anesthesiology, specializing in Pain Medicine, with taxonomy code 207LP2900X.
Is William Chiang enrolled in Medicare?
Yes. William Chiang 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 Chiang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Chiang reassigns Medicare benefits to 3 organizations: Avala Physician Network, LLC (Covington, LA), Diagnostic And Interventional Spinal Care Of Louisiana (Covington, LA) and State Of Mississippi- University Of Mississippi Medical Center (Jackson, MS). 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 Chiang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Chiang accept?
Health plans from HMO Louisiana list William Chiang 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 Chiang affiliated with any hospitals?
According to CMS data, William Chiang is affiliated with Avala.
When was this NPI record last updated?
The NPPES record for William Chiang was last updated on June 23, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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 Chiang, MD · NPI 1194256867
Pain Medicine physician in Hammond, Louisiana. Individual provider, active in the CMS NPPES registry since March 24, 2017.
## Identity
- **NPI:** 1194256867 (Entity type: Individual)
- **Enumerated:** March 24, 2017
- **Primary specialty:** Anesthesiology - Pain Medicine · taxonomy 207LP2900X
- **State license:** 331557 (Louisiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 19065 DR JOHN LAMBERT DR STE 2000-A, Hammond, LA 70403-0997
- **Phone:** (985) 338-2423
## 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): Avala Physician Network, LLC (NPI 1922694710, Covington, LA); Diagnostic And Interventional Spinal Care Of Louisiana (NPI 1659616696, Covington, LA); State Of Mississippi- University Of Mississippi Medical Center (NPI 1194930693, Jackson, MS) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Louisiana State University School Of Medicine In Shreveport, class of 2017
## Record status
- **NPPES last updated:** June 23, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1194256867) · Data from the CMS NPPES public registry.