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MaryAnn P McMahon

MaryAnn P McMahon, MD

Internal Medicine

Accepting New Patients
Online Booking
Need help scheduling? Call 856-536-1515

Highlights

Age Groups Seen

  • Adult 18-65
  • Older Adult 65+

Languages

  • English

Gender

Female

Affiliations

  • Cooper University Hospital

About MaryAnn P McMahon

Professional Statement

I am an outpatient internist, caring for adult patients with traditional office visits and telemedicine. I am a clinician, giving personalized care, in a friendly and efficient manner, while caring for many of my patients for more than 15 years. 

Title

Internal Medicine Physician

Primary Care Physician

Awards and Honors

SJ Magazine "Top Docs" - 2020

Practice Group :

Cooper Care Alliance

Appointments

Locations

Education and Training

Education

  • Internship/Residency: Cooper University Hospital, Internal Medicine, 2003
  • Medical School: Sidney Kimmel Medical College at Thomas Jefferson University, 2000

Board Certifications

  • Internal Medicine: American Board of Internal Medicine, 2003

Insurance

Search plans
  • Aetna Better Health Medicaid HMO
  • Aetna First Health (Coventry)
  • Aetna HMO/PPO/POS
  • Aetna Medicare
  • Aetna Quality Health
  • Aetna Whole Health
  • AmeriHealth HMO/PPO/POS
  • AmeriHealth Medicare
  • AmeriHealth Value Network
  • Braven Health Medicare
  • Cigna Evernorth Behavioral Health
  • Cigna HMO/PPO/POS
  • Cigna Medicare
  • Cigna One Health
  • Clover Health Medicare PPO
  • Fidelis Care Medicaid HMO
  • First MCO Group Health
  • Galaxy Health Network Group Health
  • Guardian
  • Horizon Blue Cross Blue Shield of New Jersey HMO/PPO
  • Horizon Blue Cross Blue Shield of New Jersey Omnia
  • Horizon Blue Cross Blue Shield of New Jersey State Benefit Plans
  • Horizon NJ Health Medicaid HMO
  • Horizon NJ Health NJ Family Kidcare
  • Humana Medicare Advantage Medicare HMO
  • Humana Medicare Advantage Medicare PPO
  • Humana Military Prime
  • Humana Military Standard
  • Humana Military TriCare
  • Independence Blue Cross IBC PPO
  • Independence Blue Cross Keystone Healthplan East
  • Independence Blue Cross Medicare
  • Independence Blue Cross Personal Choice
  • Jefferson Health Plans Medicare HMO
  • Jefferson Health Plans Medicare PPO
  • Longevity Health Plan Medicare PPO I-SNP
  • Magellan Behavioral Health
  • MagnaCare Group Health
  • Medicaid (NJ)
  • Medicare
  • MultiPlan PHCS
  • Prime Health Services Group Health
  • QualCare Emblem Health
  • QualCare HMO/PPO
  • Railroad Medicare
  • Three Rivers Contigo
  • Three Rivers Devon
  • United Behavioral Health Group Health
  • United Behavioral Health Medicaid
  • United Behavioral Health Medicare
  • United Behavioral Health Optum
  • United Healthcare AARP
  • United Healthcare Community Plan Medicaid HMO
  • United Healthcare Community Plan NJ Family Kidcare
  • United Healthcare Dual Complete D-SNP
  • United Healthcare Group Health
  • United Healthcare Medicaid
  • United Healthcare Medicare
  • United Healthcare Medicare Advantage
  • US Family Health Plan
  • VA Community Care Network
  • WellCare Medicare
  • Wellpoint Medicaid HMO
  • Wellpoint Medicare

Ratings & Reviews

4.8 out of 5

395 ratings, 145 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.

Search reviews
  • Reviewed on 5/29/2026

    I respect Dr McMahon's medical knowledge. Her ability to discuss my current medical status and offer options and go forward plans.

  • Reviewed on 5/29/2026

    Everyone was kind and courteous

  • Reviewed on 5/28/2026

    Dr MCMAHON CONSISTENTLY exceeds all expectations ! ! !! If anybody is lucky enough to get into her practice u will b rewarded with service that u would expect only from a parent ! ! !! If u need a solid , smart individual that cares about YOU ,,, see DR MCMAHON !

  • Reviewed on 5/22/2026

    Dr. McMahon has been my primary care doctor for a few years now, and she's an excellent physician. She is very caring. She just does a wonderful rapport immediately. As soon as she walks in the room, she just starts her care and her direction. I'm appreciative of her as my primary doctor. And also, Cooper is Cooper in general. Their offices, and I've been to several of them, they are amazingly well organized and very professional, and I really appreciate that. Thank you.

  • Reviewed on 5/22/2026

    The entire staff at this practice is excellent. I waited about 2 minutes to be called back and about 2 minutes for Dr. McMahon. She spent time with me, made me feel comfortable and did a thorough check of my health. She's great.

  • Reviewed on 5/21/2026

    Since switching primary Dr, I have been very happy with Dr Mcmahon, & the office staff.

  • Reviewed on 5/21/2026

    Dr McMahon is very attentive, caring, amicable and knowledgeable.

  • Reviewed on 5/21/2026

    Dr. McMahon is very thorough and extremely knowledgeable. She ask a lot of questions and gives suggestions on what will keep us healthy.

  • Reviewed on 5/16/2026

    Dr McMahon is an awesome doctor and truly a person that cares deeply about her patients . I reside in Royersford Pa and do not mind the drive to cherry Hill NJ for all my appointments.Thank you Cooper university health

  • Reviewed on 5/15/2026

    I have been a patient of Dr. Maryann McMahon's for 16 or 17 years. She has my complete confidence and I intend to remain her patient for as long as possible. I have also referred my friends and family to her.

  • Reviewed on 5/13/2026

    I felt very comfortable. The physical build was very well kept.

  • Reviewed on 5/10/2026

    I had a good experience

  • Reviewed on 5/8/2026

    Yes, Dr. Mcmahon was very thorough and she did an excellent job explaining everything to me. I'm delighted to see her again. Thank you.

  • Reviewed on 5/8/2026

    Dr McMahon was so helpful when I met with her. I had some questions about a serious challenge I'm facing, and she answered all of my questions with insight and compassion.

  • Reviewed on 5/7/2026

    Everyone was very nice!

  • Reviewed on 5/1/2026

    Dr. McMahon is great! Very personable and professional in her manner. She listens attentively and gives thoughtful and helpful insight. I'm very happy with her as my physician.

  • Reviewed on 4/28/2026

    I never feel rushed with Dr McMahon. She's patient, a good listener and explains things in a clear way.

  • Reviewed on 4/23/2026

    Dr. McMahon has been my provider for a very long time and she and her staff have always been very professional with me. There's absolutely nothing else to add to their professionalism. I'm completely satisfied with the way they treat me as well as my family. Thank you.

  • Reviewed on 4/15/2026

    Dr. McMahon is Awesome! Because of my trust/faith in her; and based on her recommendations, I've switched all but 1 doctor to Cooper Health System.

  • Reviewed on 4/15/2026

    I recently moved back to South Jersey and I'm very pleased with my primary care visit to Dr. McMahon to establish care.

  • Reviewed on 4/14/2026

    Dr McMahon is a great doctor!

  • Reviewed on 4/9/2026

    Okay, I finally found an excellent doctor with Dr. McMahon because she's very thorough with my health care and she wants to know everything from the specialists that I go to and all that. She's very involved. I really appreciate that because I didn't have a good visit with another doctor and someone recommended McMahon to me. So she's awesome and I thank you so much.

  • Reviewed on 4/8/2026

    Dr. McMahon is an excellent, knowledgeable, caring physician who gives me good, practical advice. I really trust her judgement.

  • Reviewed on 4/2/2026

    Always minimum wait time, the staff is very friendly and professional. My doctor Dr. MaryAnn McMahon is the best.

  • Reviewed on 4/2/2026

    It's amazing how everyone you come in contact with is so very nice, wish every place I went was like that.

  • Reviewed on 4/1/2026

    What a kind doctor who is always shows she is interested in my well being and my progress.

  • Reviewed on 4/1/2026

    Dr. McMahon is a wonderful and caring doctor. The staff there at the foods is always very professional and helpful.

  • Reviewed on 3/31/2026

    Impressed and very pleased with Dr. McMahon. Wasn't sure what I would get when I made the appointment with her but glad I did.

  • Reviewed on 3/31/2026

    Very nice

  • Reviewed on 3/26/2026

    Dr McMahon is amazing. She always listens to me and makes me feel supported and like I am receiving the best care.

  • Reviewed on 3/20/2026

    My experience with Dr. McMahon and her staff is extraordinary. She is a magnificent provider. She knows her medical information. She has a broad knowledge and I just feel she knows me and knows the whole realm of my care and what I need. And that's really important when you have multiple issues going on. And things that I never even thought about, she is just so intuitive and she's smart and good and professional at the same time. And so is her staff. Thank you.

  • Reviewed on 3/18/2026

    I just want to say that I'm very happy with my doctor Dr. Maryann McMahon

  • Reviewed on 3/11/2026

    All the employees were welcoming, graciously helpful and efficient.

  • Reviewed on 3/5/2026

    Dr McMahon is the best! She is very knowledgeable and I trust her with my health.

  • Reviewed on 3/4/2026

    Nice experience

  • Reviewed on 3/4/2026

    Im COMPLETELY SATISFIED WITH THE EXCELLENT SERVICE OF MY DOCTOR , VERY HELPFUL STUFFS , COURTEOUS AND ACCOMODATING.

  • Reviewed on 2/27/2026

    Your question about being a "unique person" does not sit well with me. I was a patient in discomfort and wanted help, not someone special or "unique ". The care DrMcMahon provides is always the best, thorough, professional, compassionate.

  • Reviewed on 2/26/2026

    Very satisfying

  • Reviewed on 2/26/2026

    Dr McMahon is a great listener and is able to diagnose and determine solution.

  • Reviewed on 2/25/2026

    I love Dr McMahon and trust her judgment. All staff from PSR to Provider were very kind and courteous.

  • Reviewed on 2/25/2026

    I've never had a doctor spend so much time with me and actually listen to me. Dr McMahon is wonderful. I'm making an appointment for my husband as well.

  • Reviewed on 2/24/2026

    Great experience

  • Reviewed on 2/19/2026

    Dr McMahon was understanding and attentive.

  • Reviewed on 2/18/2026

    Very satisfied

  • Reviewed on 2/18/2026

    Everyone I encountered was kind and caring.

  • Reviewed on 2/13/2026

    I had a very pleasant visit. The staff and my provider answered all of my questions. I look forward to my visits with Dr Mc Mahon. I am glad she is my provider.

  • Reviewed on 2/13/2026

    It was great Thumbs Up for all the services that were provided.

  • Reviewed on 2/12/2026

    Dr. McMahon is excellent, and provides the best care.

  • Reviewed on 2/12/2026

    All good

  • Reviewed on 2/11/2026

    Love my doctor!

  • Reviewed on 2/11/2026

    Very pleased with Dr McMahon and Cooper.

  • Reviewed on 2/7/2026

    Everyone was very friendly and kind. Loved that the doctor took her time with me and we came up with a plan for the future. Would definitely recommend someone else to the office.

  • Reviewed on 2/5/2026

    Great Doctor and excellent staff.

  • Reviewed on 2/5/2026

    Dr. McMahon always has my best interests first and foremost. She is thorough in her assessments, takes a genuine interest in my questions and observations, and is professional yet very personable.

  • Reviewed on 2/4/2026

    She very carefully and caring about my health and meds and the test results I got from the doctor visit shes always caring and gentle with me and my concerns about my health issues I love her alot and recommend her to everyone who asks for a pcp at Cooper

  • Reviewed on 2/4/2026

    Dr. McMahon was very friendly, easy to talk with and pleasant. I very much enjoyed my first visit with her.

  • Reviewed on 2/4/2026

    This was my first visit and it was great all around!

  • Reviewed on 2/1/2026

    I am thoroughly impressed with Dr Maryann McMahon. I have never felt rushed during my appointments with her. She listens to me, provides education, and makes reasonable suggestions when I voice any concerns regarding my health.

  • Reviewed on 1/31/2026

    I am going to Cooper because of the fantastic "customer service ". I am always happy with the courteous care I receive

  • Reviewed on 1/29/2026

    I have recommended Dr. McMahon. My friends also like her and have made her their doctor. Thank you for having her join the Cooper health care .

  • Reviewed on 1/29/2026

    Dr. McMahon listens carefully to your concerns and then gives her thoughts on how she feels you should proceed. i recommend her to everyone who needs a primary care physician.

  • Reviewed on 1/21/2026

    Very good

  • Reviewed on 1/15/2026

    Excellent as always

  • Reviewed on 1/15/2026

    As far as Dr. McMahon goes, she's amazing, awesome. She understands everything that I need. Any questions that I give her, she has answers for. Her staff is amazing. They're very helpful, especially the one, the lady when you're checking out. She was amazing when I was there. They were great. Everybody there was great. I've never had any issues with them.

  • Reviewed on 1/14/2026

    I have been patient of Dr.McMahon many years. She is professional, organized, empathetic and just an overall caring physician. Also, the nurse Heidi was very professional and thoroughl.

  • Reviewed on 1/8/2026

    Dr. McMahon was thorough and competent. She was also listened very carefully and thoughtfully and asked questions. Was very pleased overall.

  • Reviewed on 1/8/2026

    I came from a longtime experience with my general doctor....,a kind of "Dr. Welby" wonderful man but not big on attention to detail. I finally feel in superior hands with Dr. McMahon...and at age 85 that's very important.

  • Reviewed on 1/8/2026

    I have alot of trust in Dr. McMahon. She always listens to my concerns and tries to help as best as possible.

  • Reviewed on 1/6/2026

    Good experience. All questions were answered without feeling rushed and I was on my way in under an hour from start to finish.

  • Reviewed on 1/1/2026

    My experience was great. Everyone was both professional and personal.

  • Reviewed on 12/31/2025

    I'm always treated with utmost professionalism by all the staff members including my primary care provider (Dr. Mary Ann McMahon-MD).

  • Reviewed on 12/27/2025

    Dr. McMahon is wonderful!

  • Reviewed on 12/25/2025

    Dr. Mary Ann McMahon is the absolute best!

  • Reviewed on 12/25/2025

    Everyone was courteous and very helpful with all my questions

  • Reviewed on 12/20/2025

    I have recommended Dr. McMahon to friends. Even though I found out that my previous doctor was remaining in Haddon Heights, I stayed with Dr. McMahon once I went to her because of her kindness, manner, and intelligence.

  • Reviewed on 12/18/2025

    Dr McMahon is one of the best doctors I've ever had the privilege of seeing. She is everything and more than you could possibly expect from a physician. I have complete trust in her. I have recommended her to my friends and family and they now see her as well.

  • Reviewed on 12/18/2025

    I love Dr. MaryAnn McMahon She is so warm and kind just like her father Dr. Thomas McMahon was. They both are two of a kind. Excellent doctors. Very informative and knowledgeable. Her father took great care of my mom, dad and my family. I feel fortunate to have her as my family's doctor as well.

  • Reviewed on 12/12/2025

    Dr. McMahon is an exceptionally, very good doctor. She cares very much about her patients and I would recommend her to my friends, which I have, and they all love her as well. She's excellent. Thank you.

  • Reviewed on 12/12/2025

    Love Dr. Mary Ann. Everyoneat office is nice!

  • Reviewed on 12/11/2025

    Very informative and courageous

  • Reviewed on 12/11/2025

    This was my first time at the Brace Rd., Cherry Hill facility. It was an extremely positive experience and I am very satisfied with the facilities and feel very confident in my doctor. I felt seen and heard and I felt the doctor truly had my best interest at heart.

  • Reviewed on 12/6/2025

    My provider (Dr. Mary Ann McMaho MD) and the entire staff of Cooper Heslth System are great professionals,period.

  • Reviewed on 12/5/2025

    I met Dr. Mc Mahon for the first time and found her to be very warm and friendly and thorough. I like her very much.

  • Reviewed on 12/4/2025

    Staff at 1210 Brace Road are hands down the nicest people to deal with ! ! Dr McMahon is the best, and has been recommended to a number of our friends.

  • Reviewed on 12/3/2025

    Thank you. I do not like to do surveys.

  • Reviewed on 11/25/2025

    Dr. McMahon is the best Doctor I've ever had. She listens intently, reviews all my concerns, is knowledgeable across many different medical areas and clearly advises a course of corrective action. A patient could not have a better GP.

  • Reviewed on 11/21/2025

    All was well. I appreciate t

  • Reviewed on 11/20/2025

    I have been very happy with Dr. McMahon & the office staff since I switched primary Drs.

  • Reviewed on 11/20/2025

    % excellent The Staff and Dr McMahon are right on When it comes to listening and helping With any health issues my husband and myself are dealing with!! A good number of my friends and family also see and trust the Doctor

  • Reviewed on 11/19/2025

    I lost my son two months ago.. Im still a mess. They were all very very kind.

  • Reviewed on 11/18/2025

    This was my first visit to this practice. The medical assistant and doctor were thorough in reviewing my medical records. It was a pleasant visit.

  • Reviewed on 11/13/2025

    Dr. McMahon is such a professional. I trust her judgement on my health needs. I have been going to her for over 15 years! Thank you for hiring such a thorough Doctor.

  • Reviewed on 11/12/2025

    Had a wonderful experience with my visit yesterday with Dr.Mamahon

  • Reviewed on 11/12/2025

    My experience has been very positive, from making an appointment to the visit itself. Everyone is courteous, Dr. McMahon is a kind, compassionate physician and I trust her medical expertise.

  • Reviewed on 11/11/2025

    Always helpful.

  • Reviewed on 11/9/2025

    Dr McMahon is very easy to talk to and to answer any of my questions. I feel she cares about any concerns or problems I have. She takes the time to explain her answers in ways I can understand. I always have a good visit with Dr. McMahon.

  • Reviewed on 11/9/2025

    The check in and check out person was excellent.

  • Reviewed on 11/5/2025

    Dr. Mahone will reach out to let me know when I need to have my check up. Not all doctors do that.

  • Reviewed on 11/5/2025

    Dr. McMahon is a great person and awesome doctor. She always takes the time to listen to me and I always feel valued when I go and see her. Cooper should feel proud to have her on their roster. Kudos to Dr. McMahon!! I don't know what I would do without her.

  • Reviewed on 10/31/2025

    Good personality, concerned and caring, and interested in a friendly professional way leading to trust.

  • Reviewed on 10/31/2025

    Everyone is nice.

  • Reviewed on 10/31/2025

    I'm very very Happy with my Doctor Maryann Mc Mahon

  • Reviewed on 10/30/2025

    No waiting time

  • Reviewed on 10/23/2025

    My appointment was on time, professional, and courteous. I had a wonderful experience.

  • Reviewed on 10/22/2025

    Everyone was wonderful from checking in to checking out!

  • Reviewed on 10/22/2025

    perfect

  • Reviewed on 10/18/2025

    Dr. McMahon has always given the utmost respect, time, she's very, very thorough. I would recommend her to everybody and anybody who needed a quality person that cares about you.

  • Reviewed on 10/18/2025

    Very good experience

  • Reviewed on 10/16/2025

    Dr McMahon is s wonderful provider in every way

  • Reviewed on 10/15/2025

    Dr. McMahon takes the time to answer all my questions and explains them in an easily understood way. She has a broad knowledge of all specialties and how they interact with each other. She personally calls me with my lab results as soon as they become available. In summary, she truly has an interest in my continued health and well-being.

  • Reviewed on 10/15/2025

    So fortunate having Dr.McMahon as my primary physician. She's so Knowledgeable and Current with her Health explanations & recommendations

  • Reviewed on 9/30/2025

    Dr McMahon and her staff are the nicest people I have ever had treating me. I reccomend her often!

  • Reviewed on 9/30/2025

    It was a very good experience!

  • Reviewed on 9/26/2025

    I always feel comfortable with her.

  • Reviewed on 9/26/2025

    Great staff excellent doctor

  • Reviewed on 9/25/2025

    Dr McMahon wants to know everything about me in order to give me the very best treatment to improve my health. Thank you for the professionalism. Compassion and care that Dr McMahon has provided for me. I truly trust her and appreciate her.

  • Reviewed on 9/25/2025

    Dr McMahon has been my primary doctor for many years because I trust her review and input. Her team and reception folks are professional.

  • Reviewed on 9/24/2025

    Saw Dr Mary Ann McMahon , she is excellent , she always makes you feel at ease and explains things . She is a wonderful doctor, an asset to Cooper! The staff in front are very nice. The nurses who take you in are great! !

  • Reviewed on 9/24/2025

    Great experience with the doctor and all of the staff.

  • Reviewed on 9/20/2025

    Dr. McMahon is professional, kind, very knowledgeable, and very thorough. She is a remarkable asset to COOPER HEALTH SYSTEM.

  • Reviewed on 9/18/2025

    the absolute best in every way

  • Reviewed on 9/17/2025

    I appreciated Dr. McMahon taking the time to answer all of my questions

  • Reviewed on 9/5/2025

    Dr. Mary Ann is outstanding!

  • Reviewed on 8/27/2025

    People that work at Cooper are very kind and capable and ready. Whatever you need at any moment a project have them as a doctor and our friends.

  • Reviewed on 8/15/2025

    Dr. McMahon is a wonderful, well-trained physician, period. She is a real asset to Cooper. I recommend you give her a big raise.

  • Reviewed on 8/13/2025

    Cooper's staff provide great care.

  • Reviewed on 8/7/2025

    I have been seeing Dr. McMahon for almost 25 years. I wouldn't want to see any other doctor.

  • Reviewed on 8/5/2025

    It was unusual to wait so long for Dr. McMahon, but I was still able to go over all of my concerns. I did not feel rushed during my appointment. Dr. McMahon is always very easy to talk to, and she is very helpful with any of my concerns. I look forward to seeing her and value her opinions and recommendations.

  • Reviewed on 7/30/2025

    Dr McMahon is excellent. She has been my physician for many years; I have much confidence in her skill.

  • Reviewed on 7/30/2025

    Love Dr McMahon and my other Cooper Doctors.

  • Reviewed on 7/18/2025

    As always, my consultation with and examination by Dr. McMahon was caring and thorough. My confidence in Dr. McMahon is complete. I also want to express my gratitude to Nurse Heidi for sharing her own experience with chronic facial nerve pain and recommending a support group.

  • Reviewed on 7/10/2025

    Everyone was professional and courteous

  • Reviewed on 7/2/2025

    I always have a good experience when seeing my doctor, Dr. Maryann McMahon. She is a wonderful doctor! The office staff is very caring, professional and caring.

  • Reviewed on 6/28/2025

    Dr, is a true friend. Wonderful and kind. VERY direct, thoughtful and informative. Broad spectrum knowledge.

  • Reviewed on 6/25/2025

    I really appreciate my relationship with my doctor. I always come with a list and she takes time to go over my concerns.

  • Reviewed on 6/22/2025

    Always great seeing Dr. McMahon. All my doctors are Cooper Doctors. Two and a half years ago had colorectal cancer and was amazed and very grateful for having Dr. McClane as my doctor!!!!!!!!!!!!! !

  • Reviewed on 6/19/2025

    Satisfied

  • Reviewed on 6/18/2025

    We love Dr. McMahon!

  • Reviewed on 6/18/2025

    They are most caring.

  • Reviewed on 6/17/2025

    Always a pleasure to o see Dr. McMahon.

  • Reviewed on 6/17/2025

    Maryann McMahon Is fabulous!

  • Reviewed on 6/14/2025

    This was my first visit with Dr. McMahon. I was looking for a new primary care physician. I will be happy to continue to see Dr. McMahon for my health care needs.

  • Reviewed on 6/13/2025

    Dr. McMahon is extremely knowledgeable and professional. She never rushes me, she listens to my concerns with interest and care. Dr. McMahon goes out of her way to care for her patients.

  • Reviewed on 5/7/2025

    As a new patient to Cooper, I am very happy with the nurse and Dr. McMahon. They were both very kind and interested in my comfort and medical care. I am so appreciative.

  • Reviewed on 2/10/2025

    Dr. is honest and a friend. Great.

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