Marie Delvalle-Mahoney, M.D.
Internal Medicine Physician · Slidell, LA
Marie Delvalle-Mahoney, M.D. is an internal medicine physician with a practice address in Slidell, Louisiana, and NPI 1972645786, issued on Feb 12, 2007. Check the license (Louisiana 11216R, as entered in NPPES) on the Louisiana State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Marie Delvalle-Mahoney
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 11216R LA
Self-reported in NPPES; status is on the state search - Practice location
- 1570 Lindberg Dr Ste 14, Slidell, LA 70458
- Phone
- (985) 646-0945
- Enumerated
- Feb 12, 2007
- Record last updated
- Feb 16, 2024
- Fax
- (985) 643-8510
- Medicaid ID
- 1666386 LA
- Medicare enrollment
- Enrolled (PECOS I20040129000184); accepts Medicare assignment
- Medical or professional school
- Rutgers R W Johnson Medical School (Cam/New Bruns/Pisc), 1991
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,749 in Louisiana → Look up another NPI →
Also registered at 1570 Lindberg Dr Ste 14
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jembber Robinson, MDFamily Medicine Physician1508378118
Verify Marie Delvalle-Mahoney in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersLouisiana State Board of Medical Examiners
Search for license 11216RCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.3 times the Medicare Part D claims of the average internal medicine physician in 2024
10,362 Medicare Part D claims for 624 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 180 claims were for opioids.
Most prescribed
- Atorvastatin Calcium411 claims
- Levothyroxine Sodium385 claims
- Amlodipine Besylate383 claims
- Gabapentin300 claims
- Pantoprazole Sodium294 claims
- Metoprolol Succinate249 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: $497.90
27 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Our Lady OF The Lake Physician Group LLCSlidell, LA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marie Delvalle-Mahoney among 1,749 internal medicine physician records in Louisiana
Marie Delvalle-Mahoney, M.D. is one of 1,749 internal medicine physician records with a practice address in Louisiana. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 42% of them.
- NPI issued2007 · 42% of these records are older, 50% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1991 · median 2008 among the 1,216 with a school on file
- Record last updated2024 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Louisiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
39 internal medicine physician records list a practice address in Slidell
They are 39 of the 1,838 NPPES records with a practice address in Slidell, and 1,749 internal medicine physician records in Louisiana.
All 1,749 in Louisiana → Every provider in Slidell → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Stephen Baker, MDSlidel, LA 704581013011303
- John Barton, MDSlidell, LA 704581841233095
- Aleta Declouet, M.D.Slidell, LA 704581033163977
- Peter Galvan, M.D.Slidell, LA 704581609876580
- James Griffee, M.D.Slidell, LA 704581427006055
- Michael Guarisco, M.D.Slidell, LA 704581699830539
- Thomas Hall, M.D.Slidell, LA 704581457349896
- Alvin Haynes, MDSlidell, LA 704581356438170
Common questions
What is Marie Delvalle-Mahoney, M.D.'s NPI number?
Marie Delvalle-Mahoney, M.D.'s National Provider Identifier (NPI) is 1972645786, issued on Feb 12, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Marie Delvalle-Mahoney, M.D. located?
The NPPES record lists a practice address at 1570 Lindberg Dr Ste 14, Slidell, LA, 70458. Phone: (985) 646-0945. Providers update this record themselves, so call before visiting.
How can I verify Marie Delvalle-Mahoney, M.D.'s license?
NPPES lists Louisiana license number 11216R, as entered by the provider. Search the Louisiana State Board of Medical Examiners at https://www.lsbme.la.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Marie Delvalle-Mahoney, M.D. prescribe under Medicare Part D?
In 2024, Marie Delvalle-Mahoney, M.D. had 10,362 Medicare Part D claims for 624 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.