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H Mark Denson

H Mark Denson, MD

Cardiology

Accepting New Patients
5.0 of 5 stars597 ratings, 135 reviews
Need help scheduling? Call 551-996-9180

Highlights

Age Groups Seen

  • Adults
  • Adults Over 65

Languages

  • English

Gender

Male

Affiliations

  • Hackensack Meridian Medical Group
  • Hackensack University Medical Center
Logo for Hackensack Meridian Medical Group

About H Mark Denson

Dr. Denson provides care to patients with hypertension, elevated cholesterol, coronary artery disease, heart failure, and arrhythmias. He takes pride in having long-standing empathetic relationships with his patients. He has a special interest in evaluating and treating the cardiovascular issues related to cancer.

Learn more about our practice.

Locations

    Expertise

    Education

    Perelman School Of Medicine At The University Of Pennsylvania

    Medical Education

    Montefiore Medical Center

    Fellowship, Cardiology, 1989

    Montefiore Medical Center

    Residency, Internal Medicine, 1989

    Montefiore Medical Center

    Internship, Internal Medicine, 1987

    Board Certifications

    Cardiovascular Disease

    American Board of Internal Medicine, 1989

    Internal Medicine

    American Board of Internal Medicine, 1986

    Insurance

    Please contact the doctor's office directly to confirm acceptance of insurance.
    Search plans
    • Aetna
    • Aetna Better Health
    • Amerihealth
    • Cigna
    • Clover Health
    • Fidelis Care
    • Horizon Blue Cross Blue Shield of New Jersey (Horizon BCBSNJ)
    • Horizon Blue Cross Blue Shield of New Jersey (Horizon NJ Health)
    • Karna WTC
    • MagnaCare
    • Medicaid
    • Medicare
    • MultiPlan
    • Oxford Health Plans
    • QualCare
    • Railroad Medicare
    • United Healthcare (UHC)
    • UnitedHealthcare (UHC) Medicare
    • Wellpoint

    Ratings & Reviews

    5 out of 5

    597 ratings, 135 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.

    Explanations Easy to Understand
    Average provider Explanations Easy to Understand rating 5 out of 5 stars
    Listened Carefully to You
    Average provider Listened Carefully to You rating 5 out of 5 stars
    Knew Your Medical History
    Average provider Knew Your Medical History rating 5 out of 5 stars
    Showed Respect for You
    Average provider Showed Respect for You rating 5 out of 5 stars
    Spent Enough Time With You
    Average provider Spent Enough Time With You rating 5 out of 5 stars
    Gave Easy to Understand Instructions
    Average provider Gave Easy to Understand Instructions rating 5 out of 5 stars
    Search reviews
      5 out of 5 stars
      Reviewed on 3/21/2025

      I have been dealing with Dr. Denson's office for many, many years and it is always a pleasant experience. His office staff is great. He is a wonderful and concerned doctor and I have been very pleased all these years. I hope to continue to be pleased in his new office. Thank you.

      5 out of 5 stars
      Reviewed on 3/18/2025

      Always very GOOD!!!!

      5 out of 5 stars
      Reviewed on 3/17/2025

      Dr. Denson is always a caring and knowledgeable physician. I have been a patient for many years and I feel he has done a great job guiding me through the journey of aging. Highly recommend him.

      5 out of 5 stars
      Reviewed on 3/10/2025

      Dr. Denson was a wonderful, understanding, intelligent person about my problem and I would recommend him to anybody and everybody.

      5 out of 5 stars
      Reviewed on 2/26/2025

      My favorite Doctor. I'm always treated professionally. I've recommended Dr Denson to friends and family.And I have to add,his referral's to other Doctors were outstanding.

      5 out of 5 stars
      Reviewed on 2/24/2025

      Dr. Denson is an extremely knowledgeable and dedicated physician. He has always returned my calls within an hour. I never wait for my appointment. He is a great listener and has given me consistently great advice and care.

      5 out of 5 stars
      Reviewed on 2/24/2025

      As usual, Dr. Denson spent time with me and listened carefully to any questions I had. I have recommended him to several of my friends.

      5 out of 5 stars
      Reviewed on 2/21/2025

      He was an excellent doctor who was very friendly and helpful with giving me information for the reason I was sent to his office

      5 out of 5 stars
      Reviewed on 2/19/2025

      I have been with Doctor Denson for many, many years. He is tops and so is his staff

      5 out of 5 stars
      Reviewed on 2/19/2025

      Dr. Denson answers all my questions and he even discussed some concerns on my bloodwork. He recommended I contact my Nephrologist to schedule an office visit which I will do. He shows real concern for his patients well being. My husband is also his patient and thinks the world of Dr. Denson as well.

      5 out of 5 stars
      Reviewed on 2/14/2025

      The office staff is pleasant and Dr. Denson is as nice a person and as great a cardiologist as anyone can ask for. He is attentive and diagnostician who does not alarm but you know when he thinks something is important.

      5 out of 5 stars
      Reviewed on 2/14/2025

      Dr Denson is a fantastic doctor

      5 out of 5 stars
      Reviewed on 2/7/2025

      Always listens and explain.

      5 out of 5 stars
      Reviewed on 2/3/2025

      Very good meeting with a new (for me) specialist provider. Absolutely on-time, efficient, and compassionate.

      5 out of 5 stars
      Reviewed on 1/24/2025

      I'm very satisfied with Dr. Denson. He has always given me satisfaction and answered any questions I ever had, and he spends enough time with me so I feel comfortable, and I feel much better after I talk to him. Thank you.

      5 out of 5 stars
      Reviewed on 1/24/2025

      Dr. Denson is a terrific doctor and we appreciate him being our main doctor.

      5 out of 5 stars
      Reviewed on 1/23/2025

      Dr Denson is very consistent. Runs an excellent office is always on time and always reviews my med history before he comes in. Very easy to deal with. A+++

      5 out of 5 stars
      Reviewed on 1/23/2025

      Dr Denson is a excellent doctor

      5 out of 5 stars
      Reviewed on 1/22/2025

      Very helpful and courteous

      5 out of 5 stars
      Reviewed on 1/22/2025

      Dr. Denson is an excellent and caring physician.

      5 out of 5 stars
      Reviewed on 1/20/2025

      Always a pleasure

      5 out of 5 stars
      Reviewed on 1/20/2025

      Dr Denson is an empathic professional doctor with ability to inspire confidence in his patients

      5 out of 5 stars
      Reviewed on 1/16/2025

      Dr Denson is a complete professional, as was his staff. I would recommend him highly.

      3 out of 5 stars
      Reviewed on 1/8/2025

      Hi, I've been a patient of Dr. Denson's for about 20 years and also my family. He has always been truthful and honest and helpful. And I've had some major losses in my family and he has always been there for me. And yes, I would recommend him to anyone. Thank you.

      5 out of 5 stars
      Reviewed on 1/6/2025

      Dr. Denson always listens to me and then explains what has happened or what changes need to be made to maintain my health. Feel confident when I walk out that I have received a great examination and I have learned more about my situation than I knew before I visited. I also like that he has such a calm demeanor and he doesn't rush you in and out. One of my favorite Doctors.

      5 out of 5 stars
      Reviewed on 1/6/2025

      Dr Denson continues to be AWESOME!

      5 out of 5 stars
      Reviewed on 12/31/2024

      Dr Denson is great

      5 out of 5 stars
      Reviewed on 12/30/2024

      Excellent

      5 out of 5 stars
      Reviewed on 12/23/2024

      Dr. Denson AND his office staff are the BEST.

      5 out of 5 stars
      Reviewed on 12/16/2024

      All my questions and concerns were answered. I have the utmost confidence in this provider.

      5 out of 5 stars
      Reviewed on 12/16/2024

      Very pleasant experience with doctor and all associates.

      5 out of 5 stars
      Reviewed on 12/13/2024

      BEST EVER

      5 out of 5 stars
      Reviewed on 12/13/2024

      My visits to this healthcare provider and staff are always professional and organized. I feel confident

      5 out of 5 stars
      Reviewed on 12/10/2024

      My visit with DR Denson was very satisfactory.

      5 out of 5 stars
      Reviewed on 12/9/2024

      Approachable, professional, and friendly.

      5 out of 5 stars
      Reviewed on 12/4/2024

      Always very nice and listens well!! GREAT DOCTOR!!

      5 out of 5 stars
      Reviewed on 12/3/2024

      I feel that Dr. Denson is a very nice man. He seems concerned. I think he knows what he's doing. That's my opinion. Thank you.

      4 out of 5 stars
      Reviewed on 11/26/2024

      Office is dated, cramped and smells damp. Office staff are always changing, and are less than competent. The office situation and staff has been an ongoing problem, one that has continued to deteroriate. Unfortunatley, this seems to be typical of HUMC offices. Who is in charge, and watching the various locations?

      5 out of 5 stars
      Reviewed on 11/21/2024

      Dr. Denson was very nice and helped answer many of the questions. Thank you!

      5 out of 5 stars
      Reviewed on 11/21/2024

      It was fine.

      5 out of 5 stars
      Reviewed on 11/19/2024

      Very good

      5 out of 5 stars
      Reviewed on 11/15/2024

      Dr. Denson is extremely attentive and empathetic.

      5 out of 5 stars
      Reviewed on 11/15/2024

      Dr. Denson is excellent. I would recommend him to anybody at any time.

      5 out of 5 stars
      Reviewed on 11/12/2024

      Dr. Denson on every visit has shown careful consideration to my health issues and has always made me feel very well cared for medicallly. One great caring doctor.

      5 out of 5 stars
      Reviewed on 11/11/2024

      Always a good visit. Explained everything.

      5 out of 5 stars
      Reviewed on 11/8/2024

      Awesome

      5 out of 5 stars
      Reviewed on 11/8/2024

      Office management was spectacular and provided superb support!

      5 out of 5 stars
      Reviewed on 11/7/2024

      Dr Denson is an excellent, caring professional. Highly recommend him.

      5 out of 5 stars
      Reviewed on 11/7/2024

      Dr. Denson is the type of practitioner that today's younger practitioners should aspire to be.

      5 out of 5 stars
      Reviewed on 11/5/2024

      Dr.DENSON ALWAYS DOES A GOOD JOB OF KEEPING UP TO DATE ON MY HEALTH

      5 out of 5 stars
      Reviewed on 10/28/2024

      excellent as always

      5 out of 5 stars
      Reviewed on 10/17/2024

      Dr. and his staff are professional, yet friendly!

      5 out of 5 stars
      Reviewed on 10/17/2024

      Very good care, same for office staff.

      5 out of 5 stars
      Reviewed on 10/17/2024

      Excellent doctor; have recommended his practice to friends......

      5 out of 5 stars
      Reviewed on 10/16/2024

      Dr Denson is the best!

      5 out of 5 stars
      Reviewed on 10/15/2024

      Always a pleasure seeing Dr. Denson. He has a terrific manner which put you at ease.

      5 out of 5 stars
      Reviewed on 10/11/2024

      Dr Denson is the best. Calm, caring and a great doctor

      5 out of 5 stars
      Reviewed on 10/7/2024

      Everything went very well

      5 out of 5 stars
      Reviewed on 10/7/2024

      The fact that you always see the doctor at your appointed time. Scheduling in his office goes very smoothly. The staff is to be commended for their professionalism.

      5 out of 5 stars
      Reviewed on 10/7/2024

      The doctor and staffs are very nice and helpful

      5 out of 5 stars
      Reviewed on 10/3/2024

      Dr. Denson is the consummate professional. He is a leader in cardiology and treats me as an individual. He thoroughly explains the EKG and blood test results.

      5 out of 5 stars
      Reviewed on 9/26/2024

      All went well I honestly felt better when I left the office

      5 out of 5 stars
      Reviewed on 9/25/2024

      I feel that the prisoner is very old, he is a good doctor for me, thank you.

      5 out of 5 stars
      Reviewed on 9/25/2024

      Overall it was a wonderful experience, the staff was courteous, professional and friendly, the doctor was professional, caring, and knowledgeable. I was very nervous at first he answered all my questions and made me feel comfortable and at ease.

      5 out of 5 stars
      Reviewed on 9/13/2024

      Professional and caring.

      5 out of 5 stars
      Reviewed on 9/11/2024

      Dr. Denson is in a Class above First. He's T E R R I F I C

      5 out of 5 stars
      Reviewed on 9/11/2024

      The BEST!

      5 out of 5 stars
      Reviewed on 9/10/2024

      Dr Denson is calming and extremely knowledgeable.. he's a great doctor

      5 out of 5 stars
      Reviewed on 9/10/2024

      Hard to get through on the phone to make an appointment

      5 out of 5 stars
      Reviewed on 9/9/2024

      Denson continually runs an efficient office operation with a friendly staff. He is a pro who is current with the latest med info. A+++

      5 out of 5 stars
      Reviewed on 8/27/2024

      Dr. Denson is outstanding, but the office staff keeps changing except for one person. Current office staff limited at best, not very professional nor do they understand customer service. Facility is dated, stinks and in need of major face-lift.

      5 out of 5 stars
      Reviewed on 8/21/2024

      Dr Denson always takes as much time with you as needed listens makes you feel relaxed. Great doctor.

      5 out of 5 stars
      Reviewed on 8/20/2024

      Dr Denson is knowledgeable, kind, efficient and drew blood from my arm with ease I always feel comfortable with him

      5 out of 5 stars
      Reviewed on 8/19/2024

      Dr Denson is phenomenal

      5 out of 5 stars
      Reviewed on 8/16/2024

      DR. DENSON IS A VERY RARE PERSON! HE is an EXCELLENT DOCTOR! HE cares about his patients and it SHOWS!!

      5 out of 5 stars
      Reviewed on 8/15/2024

      Second visit with this provider. I was very satisfied. Listened carefully to me, answered my questions fully, promptly called me when I asked to review test results. Low keyed, friendly manner.

      5 out of 5 stars
      Reviewed on 8/14/2024

      Yeah, I just want to say that Dr. Denson is a great provider, a great cardiologist, and I highly recommend him to everybody that I'm in contact with. He reassures you, he knows what he's doing, and his office staff is wonderful. Thank you.

      5 out of 5 stars
      Reviewed on 8/14/2024

      I would recommend Dr. Denson to my friends and family. Both my husband and I are his patients and he is the best!

      5 out of 5 stars
      Reviewed on 8/6/2024

      Dr. Denson and his entire staff are fantastic!!

      5 out of 5 stars
      Reviewed on 8/5/2024

      Dr. Denson and the whole staff are very nice!

      5 out of 5 stars
      Reviewed on 8/5/2024

      Awesome!!!!!

      5 out of 5 stars
      Reviewed on 8/2/2024

      IF YOU NEED A HEART DOCTOR THIS IS THE DOCTOR TO SEE DOCTOR DENSON

      5 out of 5 stars
      Reviewed on 8/1/2024

      Dr. Denson has always been nothing but professional and helpful. I have been with him for over 14 years. I have also recommended him to others who have gone to him now. The staff is consistently helpful and friendly.

      5 out of 5 stars
      Reviewed on 8/1/2024

      Mark Denson is a great Doctor I have been going to him for over 30 years that says it All.

      5 out of 5 stars
      Reviewed on 8/1/2024

      This is a wonderful office. Well run and everyone is so nice. Dr. denson is the best cardiologist in Hackensack.

      5 out of 5 stars
      Reviewed on 7/26/2024

      Dr Denson was concerned and had arranged an earlier appointment for me. EKG was normal, but we still had a good conversation, covering health related items besides the heart.

      5 out of 5 stars
      Reviewed on 7/22/2024

      Dr. Denson was very compassionate and listened carefully to everything I asked. And he also offered some suggestions. So I really am coming back to him in a few months. Thank you.

      5 out of 5 stars
      Reviewed on 7/17/2024

      Everyone in the office was exceptionally nice.

      5 out of 5 stars
      Reviewed on 7/17/2024

      Dr. Denson is wonderful. He's courteous, on point and always up to date with what is beneficial to my health.

      5 out of 5 stars
      Reviewed on 7/15/2024

      Dr.DENSON He is an outstanding doctor and a very pleasant person.THE BEST.

      5 out of 5 stars
      Reviewed on 6/28/2024

      Always appreciate on time appts, kindness Dr. Denson shows and particularly appreciate his calm demeanor.

      5 out of 5 stars
      Reviewed on 6/27/2024

      Dr. Mark Denson is a credit to the medical profession. His staff is friendly and efficient. Dr. Denson has the gift of making each of his patients feel as comfortable as possible and spends time doing so. I appreciate having him as my Doctor. Thank you

      5 out of 5 stars
      Reviewed on 6/25/2024

      Very knowledgeable Doctor Who shared his knowledge in a way that was easy to understand! Highly recommend

      5 out of 5 stars
      Reviewed on 6/18/2024

      Dr Denson always is on time with your appointment and is a great listener. My favorite doctor to go to. He respects your time too!

      5 out of 5 stars
      Reviewed on 6/18/2024

      Terrific Doctor who listens to everything and explains everything. Great guy!

      5 out of 5 stars
      Reviewed on 6/17/2024

      Always a pleasure to visit this provider.

      5 out of 5 stars
      Reviewed on 5/30/2024

      I have always had a positive experience with Dr.Denson. Very caring doctor. I always leave satisfied!

      5 out of 5 stars
      Reviewed on 5/28/2024

      dr denson is a wonderful doctor. professional, informed, a good listener, always explains everything in words i can understand and asks if i have any questions or concerns. he's a keeper!

      5 out of 5 stars
      Reviewed on 5/24/2024

      Dr Denson and his office are well run professionals. In OV after OV he and the office are outstanding performers.

      5 out of 5 stars
      Reviewed on 5/23/2024

      The provider was very helpful and very encouraging. I would recommend him very highly.

      5 out of 5 stars
      Reviewed on 5/23/2024

      Dr is very thorough. Answers all your questions!!Office staff is great!!

      5 out of 5 stars
      Reviewed on 5/21/2024

      I have the utmost confidence in Dr. Denson and I look forward to my next visit because he's taking great care of me.

      5 out of 5 stars
      Reviewed on 5/17/2024

      Dr Denson is very thorough and professional. I have the upmost confidence in him

      5 out of 5 stars
      Reviewed on 5/16/2024

      Dr. Denson is terrific! Listens carefully to my concerns and he has gotten my cholesterol and blood pressure perfectly controlled with the right mix of medications. I am very pleased.

      5 out of 5 stars
      Reviewed on 5/15/2024

      Very Good.

      5 out of 5 stars
      Reviewed on 5/14/2024

      Excellent doctor. Efficient staff.

      5 out of 5 stars
      Reviewed on 5/13/2024

      The doctor was most compassionate, understanding, answered all my questions, most pleased with his services.

      5 out of 5 stars
      Reviewed on 5/13/2024

      Dr. Denson couldn't have been more thorough, kind, and thoughtful. He listened to all my concerns and answered all my questions. Dr. Denson has cared for my family for decades and we're all so grateful for him.

      5 out of 5 stars
      Reviewed on 5/9/2024

      Timely, pleasant and efficient.

      5 out of 5 stars
      Reviewed on 5/7/2024

      I was pleased with my appt. results

      5 out of 5 stars
      Reviewed on 5/7/2024

      Excellent care, communication and office staff.

      5 out of 5 stars
      Reviewed on 5/2/2024

      Everything was good.

      5 out of 5 stars
      Reviewed on 5/2/2024

      Very good......always a helpful visit. Staff and Doctor are pleasant and courteous.

      5 out of 5 stars
      Reviewed on 5/2/2024

      Dr Denson is so kind and patient. He is very understanding and gives great advice !

      5 out of 5 stars
      Reviewed on 5/2/2024

      My appointment with the doctor was excellent. However, it is impossible reaching his office by phone. I am transferred to a main HUMC number Nd I am either disconnected or I have to wait over 20 minutes before the call is answered so I hang up completely frustrated.

      5 out of 5 stars
      Reviewed on 5/2/2024

      Dr Denson Made me feel comfortable and addressed explained things that were covered in my examination. I would definitely recommend him to someone as a Cardiologist.

      5 out of 5 stars
      Reviewed on 4/22/2024

      prescription was transmitted incorrectly- Dr Denson said he'd renew for a year but it's only renewed for 3 months

      5 out of 5 stars
      Reviewed on 4/22/2024

      My experience was excellent as always. I've been a patient of Dr. Denson for 23 years. Do you think I would continue if I wasn't satisfied with the care?

      5 out of 5 stars
      Reviewed on 4/19/2024

      Dr Denson has been my doctor for several years and has provided me with sound medical advice since becoming a patient. He takes the time to talk and ask questions and makes it comfortable to address my medical needs.

      5 out of 5 stars
      Reviewed on 4/19/2024

      Dr. Denson is a great physician. I could not be happier with my experiences with him.

      5 out of 5 stars
      Reviewed on 4/18/2024

      very happy to be with dr denson

      5 out of 5 stars
      Reviewed on 4/17/2024

      Dr. Denson is the best!

      5 out of 5 stars
      Reviewed on 4/15/2024

      I am thankful that I have this doctor I can trust and does the best job possible with me.

      5 out of 5 stars
      Reviewed on 4/12/2024

      DR. DENSON IS AN EXCELLENT DOCTOR..... HE IS A VERY RARE FIND IN THIS WORLD WE LIVE IN TODAY!!!

      5 out of 5 stars
      Reviewed on 4/12/2024

      Great Doctor

      5 out of 5 stars
      Reviewed on 4/11/2024

      The doctor listens intently to my concerns and always eases my mind. Never diminishes my concerns

      5 out of 5 stars
      Reviewed on 4/11/2024

      Awesome!

      5 out of 5 stars
      Reviewed on 4/11/2024

      Excellent!

      5 out of 5 stars
      Reviewed on 4/11/2024

      Dr Denson was great having and his team performed an EKG and we had a good conversation about our pending colonoscopy. Could not ask for a better visit.

      5 out of 5 stars
      Reviewed on 4/10/2024

      Excellent doctor I have recommended him and his practice to our friends.

      5 out of 5 stars
      Reviewed on 4/9/2024

      First time visiting Dr. Denson was a polite and concerned about me health circumstances. I would recommend him to my family and friends.. not to many doctors seems like they care about your well-being.

      5 out of 5 stars
      Reviewed on 4/8/2024

      Dr Denson is always very respectful and always on time. I would recommend him to anyone.

      5 out of 5 stars
      Reviewed on 4/8/2024

      Been seeing Denson for years and he completely understands my needs

      5 out of 5 stars
      Reviewed on 4/8/2024

      A comfortable and helpful visit.

      5 out of 5 stars
      Reviewed on 4/4/2024

      Dr Denson is an empathic good listener as well as a skilled physician