
Marie L. Delvalle-Mahoney, MD
Internal Medicine
Highlights
Languages
- Spanish
- English
Gender
FemaleAbout Marie L. Delvalle-Mahoney
About The Provider
Marie Delvalle-Mahoney, MD, specializes in the diagnosis, treatment, and compassionate care of minor to complex illness in adults, the ongoing care of patients with chronic illnesses, and the care of patients at the end of life. She enjoys and has many years of experience in the care of wounds. Having spent 25 years of caring exclusively for patients in the hospital, she is excited to return to her roots in the outpatient clinical setting where she can establish long-term relationships with her patients.
Dr. Devalle-Mahoney is a graduate of Tulane University Newcomb College. She later received her Doctor of Medicine from the University of Medicine and Dentistry of New Jersey at Robert Wood Johnson Medical School in New Brunswick. She completed a residency in Internal Medicine and Pediatrics at Morristown Memorial Hospital in Morristown, New Jersey, where she served as Chief Resident in her last year.
Dr. Devalle-Mahoney is licensed by the Louisiana State Board of Medical Examiners. She is board-certified in Internal Medicine by the American Board of Internal Medicine. She is also board-certified in Hospice and Palliative Care by the American Board of Internal Medicine.
Dr. Delvalle-Mahoney is fluent in English and Spanish. She is married and has three children.
Locations
- Our Lady of the Lake Physician Group Slidell
- 1810 Lindberg Drive, Suite 1100, Slidell, LA 70458
- Get Directions
- phone: 985-646-0945
- fax: 985-643-8510
Expertise
Education
- Residency: Morristown Memorial Hospital-Graduate Med Ed Dept, Internal Medicine and Pediatrics, 1995
- Medical/Professional Education: Robert Wood Johnson Medical School of Medicine, 1991
Board Certifications
- Internal Medicine: American Board of Internal Medicine, 2010
Insurance
- Aetna Better Health
- Aetna/Coventry (All Products)
- AmeriHealth Caritas
- BCBS (All Products)
- BCBS Medicare Advantage LA
- BCBS Precision Blue (FMOLHS Plan)
- Cigna
- Coventry National/First Health CCN
- Gilsbar 360
- Healthy Blue
- Humana (All Products)
- Humana Military/Tricare
- LA HealthCare Connections
- LA Healthcare Connections - Medicare
- Louisiana Medicaid
- Medicare
- Multiplan/PHCS
- Optum/VA
- People's Health
- Railroad Medicare
- Shared Health
- Three Rivers
- UHC Community
- UHC Medicare Advantage
- United Healthcare (All Products)
- Vantage
- Wellcare
- Woman's Hospital
- Zelis
Ratings & Reviews
4.9 out of 5
576 ratings, 85 reviewsThe Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.
- 5 out of 5 starsReviewed on 3/28/2026
Excelente experience
- 5 out of 5 starsReviewed on 3/25/2026
I have recommended her to many people.
- 5 out of 5 starsReviewed on 3/23/2026
Good
- 5 out of 5 starsReviewed on 3/18/2026
Dr. Mahoney is very good answering my questions or concerns.
- 5 out of 5 starsReviewed on 3/17/2026
Dr. Mahoney is the best
- 5 out of 5 starsReviewed on 3/17/2026
Good
- 5 out of 5 starsReviewed on 3/16/2026
Good
- 5 out of 5 starsReviewed on 3/11/2026
Great
- 5 out of 5 starsReviewed on 3/7/2026
No bad experience
- 5 out of 5 starsReviewed on 3/3/2026
Dr Mahoney always listens to me and I would not trade her for the sorld...
- 5 out of 5 starsReviewed on 2/28/2026
Dr. Mahoney is an excellent physician. She is thorough in her exam and advice
- 5 out of 5 starsReviewed on 2/18/2026
Dr. Mahoney is the only GP I will see! She is honest and thorough!
- 5 out of 5 starsReviewed on 2/16/2026
I have recommended all of my friends to Dr. Mahoney-She's amazing.
- 5 out of 5 starsReviewed on 2/16/2026
Explained the diagnoses and what to watch for. Even medication side effects.
- 5 out of 5 starsReviewed on 2/11/2026
Doctor showed concern for my well-being. Listened to my concerns, and after examination fully discussed treatment
- 5 out of 5 starsReviewed on 2/10/2026
Dr Mahoney is the best! She always listens and truly cares about your health. I have never had a doctor that cared so much.
- 5 out of 5 starsReviewed on 2/9/2026
Good
- 5 out of 5 starsReviewed on 2/5/2026
Love Dr Mahoney and her staff
- 5 out of 5 starsReviewed on 2/4/2026
Good
- 5 out of 5 starsReviewed on 2/2/2026
Dr Delvalle-Mahoney is fabulous!
- 5 out of 5 starsReviewed on 1/29/2026
Very kind and caring all the time.
- 5 out of 5 starsReviewed on 1/27/2026
Excellent. Listened and took time to listen to my concerns.
- 5 out of 5 starsReviewed on 1/27/2026
Dr. Mahoney is very knowledgeable, kind, easy to talk to and addresses concerns immediately. Highly recommend.
- 5 out of 5 starsReviewed on 1/22/2026
Very Caring and Professional
- 5 out of 5 starsReviewed on 1/21/2026
Doctor Mahoney does a great job and is very easy to talk to. She is very prepared and informed with my problems.
- 5 out of 5 starsReviewed on 1/19/2026
Dr. Mahoney is excellent.
- 5 out of 5 starsReviewed on 1/19/2026
It was a very good visit as always.
- 5 out of 5 starsReviewed on 1/16/2026
I chose Dr. Mahoney as my PCP after my other PCP retired. She had attended me as a hospital patient. I find her to be very thorough and concerned for her patient's and their well-being.
- 5 out of 5 starsReviewed on 1/7/2026
Dr. Mahoney is the best !!!!!!! She listen...............and she comes up with a plan..............could not ask for any more!!!!
- 5 out of 5 starsReviewed on 1/7/2026
Dr Mahoney is an excellent physician. She shows great care and concerns for her patients.
- 5 out of 5 starsReviewed on 12/18/2025
I like Dr. Mahoney. She is very pleasant and explains everything.
- 5 out of 5 starsReviewed on 12/15/2025
I tell everyone that this is the best doctors office in Slidell!!!!
- 5 out of 5 starsReviewed on 12/12/2025
One doc Ivdont mind going to! Soo kind, listens to you and makes you feel comfortable.
- 5 out of 5 starsReviewed on 12/11/2025
I have already recommended Dr. Mahoney to all my friends and family. Several of them come here.
- 5 out of 5 starsReviewed on 12/9/2025
Love Dr Mahoney
- 5 out of 5 starsReviewed on 12/3/2025
Dr spends adequate time to address any concerns.
- 5 out of 5 starsReviewed on 12/3/2025
Excellent experience
- 5 out of 5 starsReviewed on 11/26/2025
Sr. Mahoney is very caring and considerate of my thoughts and opinions about my health care plan.
- 5 out of 5 starsReviewed on 11/20/2025
I Always recommend my Doctor to everyone in need of a Wonderful Caring Doctor .
- 3 out of 5 starsReviewed on 11/15/2025
There are times when I feel the doctor is not present with me perhaps something is on her mind or perhaps another patient in the office has a more pressing matter than mine. I am not more important than another person in the office. I am just asking for a little courtesy to know what is going on when someone walks away. The last comment made to me was "you're not normal! "Which surprised me of course then it was redirected toward a physical issue.
- 5 out of 5 starsReviewed on 11/15/2025
Fantastic doctor.
- 5 out of 5 starsReviewed on 10/29/2025
Excellent physician, very knowledgeable and shows sincere concern
- 5 out of 5 starsReviewed on 10/29/2025
Highly recommend !!
- 5 out of 5 starsReviewed on 10/29/2025
Dr Mahoney is very thorough. Address all concerns
- 5 out of 5 starsReviewed on 10/28/2025
Love Dr Mahoney. She listens and cares about her patients. I'm always recommending her.
- 5 out of 5 starsReviewed on 10/18/2025
Feel like provider genuinely cares and listens to concerns and doesn't assume but takes time to figure out what is actually going on.
- 5 out of 5 starsReviewed on 10/2/2025
Dr Mahoney is top notch!
- 5 out of 5 starsReviewed on 10/1/2025
I have recommended dr Mahoney
- 5 out of 5 starsReviewed on 9/11/2025
Love my doc
- 5 out of 5 starsReviewed on 8/30/2025
This is a primary place to be. Not sure if she is taking new patience, but I got in just in time as they stopped after me.
- 5 out of 5 starsReviewed on 8/29/2025
Very good
- 5 out of 5 starsReviewed on 8/28/2025
Excellent
- 5 out of 5 starsReviewed on 8/27/2025
Satisfied
- 5 out of 5 starsReviewed on 8/27/2025
The doctor is always very concerned about my health issues and gives me a plan to follow .
- 5 out of 5 starsReviewed on 8/27/2025
Dr Mahoney always goes the extra mile to try to or find a solution to your needs.
- 5 out of 5 starsReviewed on 8/13/2025
I'm glad to be a new patient of theirs.
- 5 out of 5 starsReviewed on 8/13/2025
Always interested in the patient; shows interest and professionalism during visit. Highly recommended!!
- 3 out of 5 starsReviewed on 8/13/2025
I like this doctor but wish SHE would let the patient know when the appointment has concluded.
- 5 out of 5 starsReviewed on 8/12/2025
Dr. Mahoney is very thorough with everything and very pleasant while explaining everything. I really love how sweet, nice, and patient she is.
- 5 out of 5 starsReviewed on 8/8/2025
Exemplary.
- 5 out of 5 starsReviewed on 8/4/2025
Dr. Mahoney sincerely cares about my medical needs. I would highly recommend future patients to her.
- 5 out of 5 starsReviewed on 7/30/2025
I liked the doctor and felt she genuinely cared about my conditions and resolutions.
- 5 out of 5 starsReviewed on 7/24/2025
Everything about this crew is good
- 5 out of 5 starsReviewed on 7/22/2025
Very knowledgeable. Excellent dr
- 5 out of 5 starsReviewed on 7/16/2025
Dr. Mahoney is an excellent doctor, great listener and shows concern for my health.
- 5 out of 5 starsReviewed on 7/5/2025
Excelent
- 5 out of 5 starsReviewed on 7/1/2025
Recommend this office on a regular basis
- 5 out of 5 starsReviewed on 6/30/2025
Answered my questions Had me very much at ease
- 5 out of 5 starsReviewed on 6/30/2025
Dr. Mahoney cares about my wellbeing as if I was family
- 5 out of 5 starsReviewed on 6/26/2025
I would highly recommend Dr. Mahoney.
- 5 out of 5 starsReviewed on 6/25/2025
Always leave my appointment feeling like I have been heard
- 5 out of 5 starsReviewed on 6/17/2025
I appreciate her time and the way she thought back through the other visits we have had.
- 5 out of 5 starsReviewed on 6/16/2025
Good experience
- 5 out of 5 starsReviewed on 6/6/2025
Dr Mahoney is terrific!
- 2 out of 5 starsReviewed on 5/30/2025
Doctors stayed 5 min.and rushed out
- 5 out of 5 starsReviewed on 5/27/2025
MS Mahoney is fantastic along with her staff
- 5 out of 5 starsReviewed on 5/22/2025
I love Dr. Mahoney! She is always looking out for my health and well being!
- 5 out of 5 starsReviewed on 5/20/2025
My doctor, Dr Mahoney is always so efficient.
- 5 out of 5 starsReviewed on 5/19/2025
My primary care doctor is extremely good
- 5 out of 5 starsReviewed on 5/19/2025
Dr.Mahoney is an awesome primary care physician.
- 5 out of 5 starsReviewed on 5/15/2025
Everything is great. The physician was very professional and answered all my questions.
- 5 out of 5 starsReviewed on 5/11/2025
Dr. Mahoney seems to be an excellent physician - good attitude and professional manner, well informed and engaged with me as a patient.
- 5 out of 5 starsReviewed on 5/7/2025
Have full confidence in Dr Mahoney
- 5 out of 5 starsReviewed on 5/6/2025
Absolutely!!! All her patients thing she is great.
- 5 out of 5 starsReviewed on 4/21/2025
Dr. Mahoney is very knowledgeable and pleasant. She is always willing discuss options of treatment for any condition.