Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Marie Delvalle-Mahoney, MD

Individual provider Internal Medicine Physician · NPI 1972645786

Marie Delvalle-Mahoney, MD is an Internal Medicine in Slidell, Louisiana. Graduated from Rutgers R W Johnson Medical School (CAM/NEW Bruns/Pisc) in 1991, 35 years ago. Practices with Our Lady of the Lake Physician Group LLC, a 635-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Louisiana.

Years since qualifying
35
Trained at
Rutgers R W Johnson Medical School (CAM/NEW Bruns/Pisc)
Licensed in
LA
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

1570 Lindberg Dr Ste 14
Slidell, LA 70458-8084
Phone: (985) 646-0945
Fax: (985) 643-8510
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 420 Avenue F, Bogalusa, LA 70427-3634 — (985) 730-6970
  • 433 Plaza St, Bogalusa, LA 70427-3729 — (985) 730-6700
  • 70411 Highway 21, Covington, LA 70433-8243 — (985) 400-5566

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 11216R (LA)

Record details

NPI number1972645786
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedFebruary 12, 2007
Last updated in NPPESFebruary 16, 2024
Certification dateFebruary 16, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Also practisesHOSPITALIST
Medical schoolRUTGERS R W JOHNSON MEDICAL SCHOOL (CAM/NEW BRUNS/PISC)
Graduated 1991 (35 years in practice)
Group practice Our Lady Of The Lake Physician Group Llc — 635 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Slidell