Dr. Alexandra Joseph Chastant, MD
- Medicare services, 2024
- 12
- Medicare patients, 2024
- 31
- Part D claims, 2024
- 407
- Hospital affiliations
- 2
- Industry payments
- $1,631
- Practice address
- 320 Settlers Trace Blvd, Lafayette, LA 70508-6060
- Practice phone
- Call (337) 981-9495
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Allergy Asthma & Immunology Center Of Southwest Louisiana
Medical specialty practice · Lafayette, Louisiana
Find Dr. Chastant's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Alexandra Joseph Chastant is an allergist and immunologist in Lafayette, Louisiana
Dr. Chastant practices at Allergy Asthma & Immunology Center Of Southwest Louisiana in Lafayette, Louisiana.
Dr. Chastant's NPI, 1134623903, was assigned on March 19, 2018. Dr. Chastant graduated from Louisiana State University School of Medicine in New Orleans in 2018. Dr. Chastant holds Louisiana license 338387.
- NPI
- 1134623903NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5395277099
- NPI enumeration date
- March 19, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (337) 981-9495
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Alexandra Joseph Chastant practices at Allergy Asthma & Immunology Center of Southwest Louisiana in Lafayette, Louisiana
Dr. Chastant's primary practice is Allergy Asthma & Immunology Center of Southwest Louisiana, at 320 Settlers Trace Blvd, Lafayette, LA 70508-6060. The practice phone is (337) 981-9495.
- Allergy Asthma & Immunology Center of Southwest Louisiana320 Settlers Trace Blvd, Lafayette, LA 70508-6060Phone(337) 981-9495
Source: Dmand AI Affiliation Data
Dr. Alexandra Joseph Chastant is affiliated with 3 sites of care and 1 medical group
Dr. Chastant's primary practice is Allergy Asthma & Immunology Center Of Southwest Louisiana in Lafayette, Louisiana. Dr. Chastant is also affiliated with Ochsner Lafayette General Medical Center. The medical group on file is Allergy, Asthma, & Immunology Center of SWLA. Dmand AI also links Dr. Chastant to 1 more hospital, named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Alexandra Joseph Chastant's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chastant practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Allergy Asthma & Immunology Center Of Southwest Louisiana | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Alexandra Joseph Chastant is one of 53 allergists and immunologists in Louisiana
Allergy and immunology is Dr. Chastant's primary specialty in the NPI Registry, under taxonomy code 207K00000X. Dr. Chastant is licensed in Louisiana.
Specialties and state licenses
- Allergy and immunology, LouisianaPrimary
Allergists and immunologists near Dr. Chastant
Counts of allergists and immunologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Alexandra Joseph Chastant billed Medicare for 12 services in 2024
CMS data shows 12 Medicare services from Dr. Chastant across 1 procedure code in 2024, all of them office visits, for 31 Medicare patients. Medicare paid $1,138 for them. Every service was in an office.
Dr. Chastant compared with the Louisiana median for allergists and immunologists, 2024
- Dr. Chastant
- Louisiana median
- Medicare services
- 12vs 44197% below
- Medicare patients
- 31vs 7860% below
- Part D claims
- 302vs 46134% below
Medians across 51 allergists and immunologists in Louisiana with Dmand AI profiles that report each measure.
Dr. Chastant's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Chastant?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chastant and other allergists and immunologists in Louisiana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Alexandra Joseph Chastant treated 31 Medicare patients in 2024, average age 71
CMS counts 31 Medicare patients who saw Dr. Chastant in 2024. The largest group is 65 to 74, with 18 patients. 75% of them have high blood pressure, and 65% have high cholesterol. Their average risk score is 1.03, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chastant's median patient age at 17, with 64% women.
Dr. Chastant's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Chastant's Medicare patients, 2024
- High blood pressure75%
- High cholesterol65%
- Arthritis45%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chastant's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 17
Patient panel by sex, all payers
- Women64%
- Men36%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Alexandra Joseph Chastant wrote 407 Medicare Part D claims in 2024
In 2024, Dr. Chastant wrote 407 Medicare Part D claims for 81 patients. 80% of them were for generic drugs. CMS names the drug for 302 of them, across 8 drugs with 11 or more claims each, at $12,183 in total drug cost. In 2023, CMS named 62 claims across 2 drugs.
Dr. Chastant's Part D claims by kind of drug, 2024
- Generic325 claims80%
- Brand-name82 claims20%
Dr. Chastant's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Chastant's Part D claims, 2024
- Antibiotics3%11 of 407 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 622024: 302387%
Drugs named by CMS: 8 in 2024, 2 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Alexandra Joseph Chastant takes part in Medicare
Dr. Chastant accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Alexandra Joseph Chastant received $1,631 in industry payments from 2022 to 2025
CMS Open Payments shows 50 general payments to Dr. Chastant from 16 drug and device companies from 2022 to 2025. Food and beverage make up the largest share, 96% of the total. Sanofi and Genzyme US Companies paid the most, $622.
General payments to Dr. Chastant by program year, 2022 to 2025
General payments to Dr. Chastant by kind, 2022 to 2025
- Food and beverage$1,57196%
- Education$604%
Companies that paid Dr. Chastant the most, 2022 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Alexandra Joseph Chastant graduated from Louisiana State University School of Medicine in New Orleans
Dr. Chastant graduated from Louisiana State University School of Medicine in New Orleans in 2018.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Alexandra Joseph Chastant's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Alexandra Joseph Chastant
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Alexandra Joseph Chastant's NPI number?
Dr. Alexandra Joseph Chastant's NPI number is 1134623903. It was assigned on March 19, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. Alexandra Joseph Chastant?
Dr. Alexandra Joseph Chastant is an allergist and immunologist in Lafayette, Louisiana. The primary specialty in the NPI Registry is Allergy & Immunology Physician (taxonomy code 207K00000X).
Where does Dr. Alexandra Joseph Chastant practice?
Dr. Chastant practices at 320 Settlers Trace Blvd, Lafayette, LA 70508-6060. Dr. Chastant's primary practice is Allergy Asthma & Immunology Center Of Southwest Louisiana in Lafayette, Louisiana. Dmand AI also links Dr. Chastant to 1 hospital.
What is Dr. Alexandra Joseph Chastant's office phone number?
The practice phone on file for Dr. Chastant is (337) 981-9495.
What is Dr. Alexandra Joseph Chastant's medical license number?
Dr. Chastant holds Louisiana license 338387.
Which hospitals is Dr. Alexandra Joseph Chastant affiliated with?
Dr. Chastant is affiliated with Ochsner Lafayette General Medical Center. Dmand AI links Dr. Chastant to 1 more hospital.
What medical group is Dr. Alexandra Joseph Chastant part of?
Dr. Chastant is linked to Allergy, Asthma, & Immunology Center of SWLA.
Does Dr. Alexandra Joseph Chastant accept Medicare?
Yes. CMS data shows Dr. Chastant billed Medicare for 12 services in 2024, and Dr. Chastant accepts Medicare assignment.
How many Medicare patients does Dr. Alexandra Joseph Chastant see?
CMS counts 31 Medicare patients who saw Dr. Chastant in 2024, with an average age of 71.
What services does Dr. Alexandra Joseph Chastant bill to Medicare?
In 2024, Dr. Chastant's most billed Medicare services were office visit, established patient (99214).
Show 4 more questionsShow fewer questions
Where did Dr. Alexandra Joseph Chastant go to medical school?
Dr. Chastant graduated from Louisiana State University School of Medicine in New Orleans in 2018.
What drugs does Dr. Alexandra Joseph Chastant prescribe most?
In 2024 Medicare Part D data, Dr. Chastant's most prescribed drugs by claims were Azelastine HCl, Fluticasone Propionate and Albuterol Sulfate Hfa.
Has Dr. Alexandra Joseph Chastant received payments from drug or device companies?
CMS Open Payments shows $1,631 in general payments to Dr. Chastant from 16 companies from 2022 to 2025. The largest total came from Sanofi and Genzyme US Companies.
How long has Dr. Alexandra Joseph Chastant been practicing?
Dr. Chastant graduated from medical school in 2018, 8 years ago.
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