James F
Markowitz, MD

Pediatric Gastroenterology, Pediatrics

(516) 472-3650

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About your doctor:

Member of Northwell Health Physician Partners
Languages spoken:


Board certifications:

  • Pediatric Gastroenterology - American Board of Pediatrics/Gastroenterology
  • Pediatrics - American Board of Pediatrics

Academic titles

  • Assistant Professor, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell

Medical school

  • Cornell University Medical College


  • New York Hospital Weill Cornell Medical Center


  • North Shore University Hospital


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Locations & insurance

Division of Pediatric Gastroenterology

  • 1991 Marcus Avenue
    Suite M100
    Lake Success, NY 11042

    Fax: 516 472 -3654

Pediatric Specialty Care at Smithtown

  • 222 Middle Country Road
    Suite 106
    Smithtown, NY 11787

    Fax: (631) 775-3231

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Patient ratings & comments

Northwell Health Physician Partners is improving the patient experience by displaying physician ratings and reviews. Learn more.

Friendliness/courtesy of the care provider


Explanations the care provider gave you about your problem or condition


Concern the care provider showed for your questions or worries


Care provider’s efforts to include you in decisions about your treatment


Information the care provider gave you about medications (if any)


Instructions the care provider gave you about follow-up care (if any)


Degrees to which care provider talked with you using words you could understand


Amount of time the care provider spent with you


Your confidence in this care provider


Likelihood of your recommending this care provider to others


Most recent comments:

Patient comments are gathered from the Press Ganey Patient Satisfaction Survey. Comments are displayed in their entirety and are anonymous for patient privacy.

"Dr. Markowitz is fabulous and I wish we were not going to age out of seeing him"

"Dr. Markowitz was excellent!! Very caring, explained everything, answered all questions and my son loved him!! One of the best doctors I have been to."

"He is simply THE BEST. Calm, informative, thorough, follows through, always ready for his patients."

"Have already recommended!"

"Dr. Markowitz is an outstanding physician. He always finds a way to connect with his patient. He gets my 15 year old son to communicate with him."

"Dr. Markowitz continues to answer all of my questions and is thoughtful about treating my unique case of Crohn's disease."

"Loved how Dr. Markowitz spoke to my child, and explained in detail. Very caring."

"I've been with this doctor for many years and he is simply amazing."

"1st visit at Dr. Markowitz's office 2004. I've been recommending him ever since. he is a gem of a doctor. He truly cares about his patients - figuring out how to make them feel better and always explains things to child in a manner children understand."

"I am really happy that I am able to have such good care by Doctor Markowitz. I am recommending him to other people. Thank you."

"dr markowitz is very nice and I like that he is good with my daughter who is 17 and the way he speaks to her on her level is great ."

"Dr. Markowitz is the ultimate professional. Our family has tremendous confidence in his care of our child. He is patient, courteous and extremely knowledgeable. He not only speaks with us as parents but is incredibly communicative and inclusive of the patient - our child! Dr. Markowitz is an incredible Doctor and we would highly recommend him to anyone looking for a specialist in his area. We are thankful for all that he does for our child!"

"Dr. Markowitz is an excellent physician and he cares about his patients."

"Dr. Markowitz is an angel!"

"it was like he knew my child by explaining how and why she reacted the way she does... his answeres blew me away!"

"Dr. called immediately with blood test results and spoke to me at length about my son's condition."

"Dr Markowitz has been great caring for my son. He is always there when I need him during or after hours. Truly cares about his patients"

"Dr. Markowitz is SIMPLY the BEST!"


"After waiting months for an appointment with Dr. Markowitz, I felt like he did not share my concern for my child's illness and was dismissive about her condition."