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Marie L. Delvalle-Mahoney

Marie L. Delvalle-Mahoney, MD

Internal Medicine

Telemedicine Visits Available
Video Visit

Highlights

Languages

  • Spanish
  • English

Gender

Female

About 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

  1. Our Lady of the Lake Physician Group Slidell

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

Please contact the practice to find out if your health plan is accepted.
Search plans
  • 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 reviews

The 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.

Provider explained things clearly
Provider showed concern
Provider included you in decisions
Likelihood of recommending this provider
Provider discussed treatment options
Search reviews
    5 out of 5 stars
    Reviewed on 3/28/2026

    Excelente experience

    5 out of 5 stars
    Reviewed on 3/25/2026

    I have recommended her to many people.

    5 out of 5 stars
    Reviewed on 3/23/2026

    Good

    5 out of 5 stars
    Reviewed on 3/18/2026

    Dr. Mahoney is very good answering my questions or concerns.

    5 out of 5 stars
    Reviewed on 3/17/2026

    Dr. Mahoney is the best

    5 out of 5 stars
    Reviewed on 3/17/2026

    Good

    5 out of 5 stars
    Reviewed on 3/16/2026

    Good

    5 out of 5 stars
    Reviewed on 3/11/2026

    Great

    5 out of 5 stars
    Reviewed on 3/7/2026

    No bad experience

    5 out of 5 stars
    Reviewed on 3/3/2026

    Dr Mahoney always listens to me and I would not trade her for the sorld...

    5 out of 5 stars
    Reviewed on 2/28/2026

    Dr. Mahoney is an excellent physician. She is thorough in her exam and advice

    5 out of 5 stars
    Reviewed on 2/18/2026

    Dr. Mahoney is the only GP I will see! She is honest and thorough!

    5 out of 5 stars
    Reviewed on 2/16/2026

    I have recommended all of my friends to Dr. Mahoney-She's amazing.

    5 out of 5 stars
    Reviewed on 2/16/2026

    Explained the diagnoses and what to watch for. Even medication side effects.

    5 out of 5 stars
    Reviewed 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 stars
    Reviewed 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 stars
    Reviewed on 2/9/2026

    Good

    5 out of 5 stars
    Reviewed on 2/5/2026

    Love Dr Mahoney and her staff

    5 out of 5 stars
    Reviewed on 2/4/2026

    Good

    5 out of 5 stars
    Reviewed on 2/2/2026

    Dr Delvalle-Mahoney is fabulous!

    5 out of 5 stars
    Reviewed on 1/29/2026

    Very kind and caring all the time.

    5 out of 5 stars
    Reviewed on 1/27/2026

    Excellent. Listened and took time to listen to my concerns.

    5 out of 5 stars
    Reviewed on 1/27/2026

    Dr. Mahoney is very knowledgeable, kind, easy to talk to and addresses concerns immediately. Highly recommend.

    5 out of 5 stars
    Reviewed on 1/22/2026

    Very Caring and Professional

    5 out of 5 stars
    Reviewed 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 stars
    Reviewed on 1/19/2026

    Dr. Mahoney is excellent.

    5 out of 5 stars
    Reviewed on 1/19/2026

    It was a very good visit as always.

    5 out of 5 stars
    Reviewed 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 stars
    Reviewed 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 stars
    Reviewed on 1/7/2026

    Dr Mahoney is an excellent physician. She shows great care and concerns for her patients.

    5 out of 5 stars
    Reviewed on 12/18/2025

    I like Dr. Mahoney. She is very pleasant and explains everything.

    5 out of 5 stars
    Reviewed on 12/15/2025

    I tell everyone that this is the best doctors office in Slidell!!!!

    5 out of 5 stars
    Reviewed on 12/12/2025

    One doc Ivdont mind going to! Soo kind, listens to you and makes you feel comfortable.

    5 out of 5 stars
    Reviewed 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 stars
    Reviewed on 12/9/2025

    Love Dr Mahoney

    5 out of 5 stars
    Reviewed on 12/3/2025

    Dr spends adequate time to address any concerns.

    5 out of 5 stars
    Reviewed on 12/3/2025

    Excellent experience

    5 out of 5 stars
    Reviewed 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 stars
    Reviewed on 11/20/2025

    I Always recommend my Doctor to everyone in need of a Wonderful Caring Doctor .

    3 out of 5 stars
    Reviewed 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 stars
    Reviewed on 11/15/2025

    Fantastic doctor.

    5 out of 5 stars
    Reviewed on 10/29/2025

    Excellent physician, very knowledgeable and shows sincere concern

    5 out of 5 stars
    Reviewed on 10/29/2025

    Highly recommend !!

    5 out of 5 stars
    Reviewed on 10/29/2025

    Dr Mahoney is very thorough. Address all concerns

    5 out of 5 stars
    Reviewed on 10/28/2025

    Love Dr Mahoney. She listens and cares about her patients. I'm always recommending her.

    5 out of 5 stars
    Reviewed 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 stars
    Reviewed on 10/2/2025

    Dr Mahoney is top notch!

    5 out of 5 stars
    Reviewed on 10/1/2025

    I have recommended dr Mahoney

    5 out of 5 stars
    Reviewed on 9/11/2025

    Love my doc

    5 out of 5 stars
    Reviewed 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 stars
    Reviewed on 8/29/2025

    Very good

    5 out of 5 stars
    Reviewed on 8/28/2025

    Excellent

    5 out of 5 stars
    Reviewed on 8/27/2025

    Satisfied

    5 out of 5 stars
    Reviewed 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 stars
    Reviewed 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 stars
    Reviewed on 8/13/2025

    I'm glad to be a new patient of theirs.

    5 out of 5 stars
    Reviewed on 8/13/2025

    Always interested in the patient; shows interest and professionalism during visit. Highly recommended!!

    3 out of 5 stars
    Reviewed 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 stars
    Reviewed 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 stars
    Reviewed on 8/8/2025

    Exemplary.

    5 out of 5 stars
    Reviewed on 8/4/2025

    Dr. Mahoney sincerely cares about my medical needs. I would highly recommend future patients to her.

    5 out of 5 stars
    Reviewed on 7/30/2025

    I liked the doctor and felt she genuinely cared about my conditions and resolutions.

    5 out of 5 stars
    Reviewed on 7/24/2025

    Everything about this crew is good

    5 out of 5 stars
    Reviewed on 7/22/2025

    Very knowledgeable. Excellent dr

    5 out of 5 stars
    Reviewed on 7/16/2025

    Dr. Mahoney is an excellent doctor, great listener and shows concern for my health.

    5 out of 5 stars
    Reviewed on 7/5/2025

    Excelent

    5 out of 5 stars
    Reviewed on 7/1/2025

    Recommend this office on a regular basis

    5 out of 5 stars
    Reviewed on 6/30/2025

    Answered my questions Had me very much at ease

    5 out of 5 stars
    Reviewed on 6/30/2025

    Dr. Mahoney cares about my wellbeing as if I was family

    5 out of 5 stars
    Reviewed on 6/26/2025

    I would highly recommend Dr. Mahoney.

    5 out of 5 stars
    Reviewed on 6/25/2025

    Always leave my appointment feeling like I have been heard

    5 out of 5 stars
    Reviewed 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 stars
    Reviewed on 6/16/2025

    Good experience

    5 out of 5 stars
    Reviewed on 6/6/2025

    Dr Mahoney is terrific!

    2 out of 5 stars
    Reviewed on 5/30/2025

    Doctors stayed 5 min.and rushed out

    5 out of 5 stars
    Reviewed on 5/27/2025

    MS Mahoney is fantastic along with her staff

    5 out of 5 stars
    Reviewed on 5/22/2025

    I love Dr. Mahoney! She is always looking out for my health and well being!

    5 out of 5 stars
    Reviewed on 5/20/2025

    My doctor, Dr Mahoney is always so efficient.

    5 out of 5 stars
    Reviewed on 5/19/2025

    My primary care doctor is extremely good

    5 out of 5 stars
    Reviewed on 5/19/2025

    Dr.Mahoney is an awesome primary care physician.

    5 out of 5 stars
    Reviewed on 5/15/2025

    Everything is great. The physician was very professional and answered all my questions.

    5 out of 5 stars
    Reviewed 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 stars
    Reviewed on 5/7/2025

    Have full confidence in Dr Mahoney

    5 out of 5 stars
    Reviewed on 5/6/2025

    Absolutely!!! All her patients thing she is great.

    5 out of 5 stars
    Reviewed on 4/21/2025

    Dr. Mahoney is very knowledgeable and pleasant. She is always willing discuss options of treatment for any condition.