Kathryn Marie Istre
Family Nurse Practitioner · Lake Charles, LA
Kathryn Marie Istre is a family nurse practitioner with a practice address in Lake Charles, Louisiana, and NPI 1093470114, issued on Nov 3, 2021. Check the license (Louisiana 218803, as entered in NPPES) with the Louisiana board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kathryn Marie Istre
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 218803 LA
Self-reported in NPPES; status is on the state search - Practice location
- 2770 3RD Ave Ste 110, Lake Charles, LA 70601
- Phone
- (337) 494-4747
- Enumerated
- Nov 3, 2021
- Record last updated
- Sep 26, 2022
- Fax
- (337) 494-4773
- Medicaid ID
- 2574809 LA
- Medicare enrollment
- Enrolled (PECOS I20211215000013); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 4,503 in Louisiana → Look up another NPI →
Also registered at 2770 3RD Ave Ste 110
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Christian Bertrand, FNP-CFamily Nurse Practitioner1558838615
- Seth Billiodeaux, MDPain Medicine Physician1841492196
- Marilyn Holland, APRNFamily Nurse Practitioner1861932154
- Logan Keller, NPFamily Nurse Practitioner1962894212
Verify Kathryn Marie Istre in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Louisiana board licenses this profession
Search for license 218803Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
64% fewer Medicare Part D claims than the average family nurse practitioner in 2024
465 Medicare Part D claims for 155 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 11 claims were for opioids.
Most prescribed
- Diazepam74 claims
- Tizanidine Hcl72 claims
- Gabapentin63 claims
- Cyclobenzaprine Hcl50 claims
- Methocarbamol49 claims
- Meloxicam17 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $691.77
37 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Lcms Neurosurgical Institute OF Lake Charles LLCLake Charles, LA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kathryn Marie Istre among 4,503 family nurse practitioner records in Louisiana
Kathryn Marie Istre is one of 4,503 family nurse practitioner records with a practice address in Louisiana. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 67% of them.
- NPI issued2021 · 67% of these records are older, 27% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2010 · median 2018 among the 2,959 with a school on file
- Record last updated2022 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Louisiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
198 family nurse practitioner records list a practice address in Lake Charles
They are 198 of the 2,791 NPPES records with a practice address in Lake Charles, and 4,503 family nurse practitioner records in Louisiana.
All 4,503 in Louisiana → Every provider in Lake Charles → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Cynthia Arabie, CFNPLake Charles, LA 706011477513653
- Patricia Christy, NURSE PRACTITIONERLake Charles, LA 706011376546739
- Robert Conner, APRNLake Charles, LA 706011053302745
- Cynthia Cox, FNPLake Charles, LA 706011831189174
- Bonnie Fruge, CFNPLake Charles, LA 706011710947635
- Brooke Kennedy, APRNLake Charles, LA 706011487693644
- John Kight, RRT, MSN, DNP, FNPCLake Charles, LA 706011093797169
- Charmaine Lemaire, CFNPLake Charles, LA 706011700822400
Common questions
What is Kathryn Marie Istre's NPI number?
Kathryn Marie Istre's National Provider Identifier (NPI) is 1093470114, issued on Nov 3, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Kathryn Marie Istre located?
The NPPES record lists a practice address at 2770 3RD Ave Ste 110, Lake Charles, LA, 70601. Phone: (337) 494-4747. Providers update this record themselves, so call before visiting.
How can I verify Kathryn Marie Istre's license?
NPPES lists Louisiana license number 218803, as entered by the provider. Search the Louisiana board that licenses this profession; the NPPES record confirms identity only.
How much does Kathryn Marie Istre prescribe under Medicare Part D?
In 2024, Kathryn Marie Istre had 465 Medicare Part D claims for 155 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.