Dr. Zachary Marwil, MD

Internal Medicine*•Male•Age 44

Internal Medicine*

Dr. Zachary Marwil, MD is an internist in Wantagh, NY and has over 15 years of experience in the medical field. He graduated from University of Missouri in 2009. He is affiliated with medical facilities such as North Shore University Hospital and Good Samaritan Hospital Medical Center. He is accepting new patients and telehealth appointments.

Dr. Zachary Marwil, MD

Gastrointestinal Specs LNG Is

3019 Merrick Rd Wantagh, NY 11793
Telehealth availableTelehealth services available
(516) 785-8075
Telehealth availableTelehealth services available
|

Accepting new patients

(516) 785-8075

Dr. Marwil is a Healthgrades Choice provider in Gastroenterology

The Healthgrades Choice designation helps you understand the most important factors to consider when choosing a healthcare professional. This designation is earned based on four set standards.
Read our methodology

  • Above average experience
  • Good hospital quality
  • Good patient ratings
  • No healthcare sanctions
  • Area of Expertise
    Dr. Marwil specializes in the area of Gastroenterology. • See board certifications
  • Explains Conditions Well
    Patients said this doctor explains conditions well. • See reviews
  • Offers Telehealth
    This doctor offers telehealth appointments. Call the office to schedule an appointment.
  • Practices at Top Hospital
    America's 100 Best Hospitals Award™ • See hospitals

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Dr. Marwil's Reviews

Likelihood to recommend Dr. Marwil

4.6
10 ratings, 8 with a written review
5 star
90%
90%
4 star
0%
0%
3 star
0%
0%
2 star
0%
0%
1 star
10%
10%

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Dr Marwil is a young, caring, very thorough, compassionate Doctor! Doctor Marwil found my cancer and has been quarterbacking the start of getting me the proper treatment! He is a man of his word when he said he will be checking in from time to time through this process, he has!
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
1 other person found this helpful
Helpful
Brendan – Oct 04, 2021
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Being a professional myself, I am therefore very critical of other professionals. I went to Dr. Marwil presenting a combination of ambiguous symptoms. I found Dr. Marwil to be thorough. He ordered the proper tests and sure enough I tested positive. He was able to diagnosed my problem. He prescribed the proper meds and I am cured. I wish all my doctors visits were as precise. Thanks Doc.!
What went well
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Trusted the provider's decisions
What could be improved
  • Difficult to schedule appointment
  • Appointment was rushed
5 others found this helpful
Helpful
Chris Suppa – Oct 25, 2019
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Amazing doctor!!!
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
6 others found this helpful
Helpful
Jul 15, 2019
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Such a nice guy and he takes his time with me, I never feel rushed. Even though I’m dealing with a chronic condition, he always puts me at ease.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
8 others found this helpful
Helpful
Jeanne in Seafood, NY – Mar 19, 2018
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Dr. Marwil helped me overcome a really bad ulcerative colitis flare and I've been in remission for the past 12 months. Also, just had to undergo a colonoscopy and it was a great experience. I can't thank this guy enough!!!
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
  • Long wait times
11 others found this helpful
Helpful
Robert in Smithtown, NY – Jul 04, 2017
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Dr Marwil is an excellent provider. He took his time to answer my questions. He saw me at the hospital and actually remembered who I was. The wait was a little long but worth it ,he was very pleasant. He's medical assistants were also very nice and knowledgeable. Overall I am very satisfied with him and I will be recommending him to my friends and family.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
13 others found this helpful
Helpful
Jazmin in Brentwood, NY – Oct 19, 2016
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Dr. Marwil has recently treated me for crohn's and has made a huge difference in my quality of life. I was also impressed with his bedside manner and patience in explaining my best course of action. Very pleased with my experience. Thanks Doc!
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
10 others found this helpful
Helpful
Beth G in Islip, NY – Oct 19, 2016
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I have never met a rude doctor like Marwil. He misdiagnosed me. I have read that he has done the same to others. If you have something simple as GERD, see him. If not, he has no patience and doesn't seem to check his patients. You also wait hours for just ten minutes of his time.
What went well
No results
What could be improved
  • Office environment
  • Difficult to schedule appointment
  • Didn't listen or answer questions
  • Didn't explain conditions well
  • Appointment was rushed
  • Didn't trust the provider's decisions
  • Long wait times
4 others found this helpful
Helpful
Melanie in Sayville, NY – Sep 08, 2016
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About Me

biography

Dr. Zachary Marwil, MD is an internist in Wantagh, NY and has over 15 years of experience in the medical field. He graduated from University of Missouri in 2009. He is affiliated with medical facilities such as North Shore University Hospital and...read more

  • Internal Medicine

  • Gastroenterology

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

  • University Of Missouri

    Medical School, 2009
American Board of Medical Specialties®
American Board of Internal Medicine®
- 
Gastroenterology
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. To learn more about the difference between these sources, please refer to our FAQs.
Healthgrades has not received any data indicating a board action exists for this provider.

Healthgrades receives board action history for physicians and physician assistants. The information displayed here is sourced from independent information providers, such as state board websites, and may not be the most up-to-date information. Healthgrades makes no representations with respect to the accuracy of any information provided here and assumes no responsibility or liability for such information.

Learn more about medical license public record check

Dr. Marwil is a Healthgrades Choice provider in Gastroenterology

    Read our methodology

    Focus on Brain Health

    Locations

    Gastrointestinal Specs LNG Is

    Gastrointestinal Specs LNG Is3019 Merrick Rd Wantagh, NY 11793
    1

    Stoneridge Endoscopy Center

    Brooklyn Campus of the VA NY Harbor Healthcare System800 Poly Pl Brooklyn, NY 11209
    2

    Affiliated Hospitals

    • NYU Langone Hospitals

      550 1st Ave
      New York, NY 10016
      Recipient of 62
      hospital awards

      America's 100 Best Hospitals Award™ (2025, 2024, 2023)

      Top 5% in the nation for consistently delivering clinical quality

      America's 250 Best Hospitals Award™ (2025, 2024, 2023)

      Top 5% in the nation for consistently delivering clinical quality

      View all awards

      How patients felt about the care they received at this hospital.

      85%
      Patients said they were given information about recovering at home

      1% higher than the national average

      78%
      Patients said that nurses always listened to them and explained things well

      3% higher than the national average

      View all patient feedback

    • North Shore University Hospital

      300 Community Dr
      Manhasset, NY 11030
      Recipient of 19
      hospital awards

      Patient Safety Excellence Award™ (2024, 2023)

      Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications

      Outstanding Patient Experience Award™ (2022)

      Top in the nation for providing excellence in patient safety by preventing infections, medical errors, and other preventable complications

      View all awards

      How patients felt about the care they received at this hospital.

      83%
      Patients said they were given information about recovering at home

      1% lower than the national average

      73%
      Patients said that doctors always listened to them and explained things well

      3% lower than the national average

      View all patient feedback

    • Mercy Medical Center

      1000 N Village Ave
      Rockville Centre, NY 11570
      Recipient of 4
      hospital awards

      How patients felt about the care they received at this hospital.

      84%
      Patients said they were given information about recovering at home
      74%
      Patients said that nurses always listened to them and explained things well

      1% lower than the national average

      View all patient feedback
    Learn more about how Healthgrades measures Hospital Quality