DR. ALEXANDRA JOSEPH CHASTANT MD
NPI 1134623903
Allergy & Immunology in Lafayette, LA
About Dr. Alexandra Joseph Chastant Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ALEXANDRA JOSEPH CHASTANT MD (NPI 1134623903) is an individual allergy & immunology provider in Lafayette, Louisiana, licensed in Louisiana (338387) and active in the NPI registry since March 2018. She is enrolled in Medicare PECOS, is affiliated with Ochsner Lafayette General Medical Center, and is a graduate of Louisiana State University School Of Medicine In New Orleans (2018).
NPPES Registry Identity
Specialties & Licenses
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. Alexandra Joseph Chastant 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 Reassignment
Medicare enrollment records show Alexandra Chastant reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Lafayette, LA 70508
- Reassigned Medicare billing, Louisiana enrollment
- 4 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
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.
Ochsner Lafayette General Medical Center
Acute Care Hospitals · Lafayette, LAOther Providers at the Same Location NPPES 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LAFAYETTE, LA 70508
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 Alexandra Chastant's NPI number?
The NPI number for Alexandra Chastant is 1134623903. It was assigned to this individual provider in the NPPES registry on March 19, 2018.
Where is Alexandra Chastant located?
Alexandra Chastant practices at 320 Settlers Trace Blvd, Lafayette, LA 70508. The listed phone number is (337) 981-9495.
What is Alexandra Chastant's specialty?
The primary specialty registered for this NPI is Allergy & Immunology with taxonomy code 207K00000X.
Is Alexandra Chastant enrolled in Medicare?
Yes. Alexandra Chastant 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 Alexandra Chastant's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alexandra Chastant reassigns Medicare benefits to Allergy Asthma & Immunology Center Of Southwest Louisiana (Lafayette, 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 Alexandra Chastant's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Alexandra Chastant 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 Alexandra Chastant 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 Alexandra Chastant affiliated with any hospitals?
According to CMS data, Alexandra Chastant is affiliated with Ochsner Lafayette General Medical Center.
When was this NPI record last updated?
The NPPES record for Alexandra Chastant was last updated on January 2, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Dr. Alexandra Joseph Chastant, MD · NPI 1134623903
Allergy & Immunology physician in Lafayette, Louisiana. Individual provider, active in the CMS NPPES registry since March 19, 2018.
## Identity
- **NPI:** 1134623903 (Entity type: Individual)
- **Enumerated:** March 19, 2018
- **Primary specialty:** Allergy & Immunology · taxonomy 207K00000X
- **State license:** 338387 (Louisiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 320 SETTLERS TRACE BLVD, Lafayette, LA 70508-6060
- **Phone:** (337) 981-9495 · **Fax:** (337) 981-7451
## 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:** Allergy Asthma & Immunology Center Of Southwest Louisiana (NPI 1437208840, Lafayette, LA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Louisiana State University School Of Medicine In New Orleans, class of 2018
## Record status
- **NPPES last updated:** January 2, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1134623903) · Data from the CMS NPPES public registry.