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Pediatric Specialist, Gastroenterologist (digestive)
27 years of experience
Accepting new patients
Video profile
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Learn more about Dr. Mark Lowenheim:

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  1. Qualifications
  2. What's important to you

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Patient Reviews

Patient comments (5)

The overall average patient rating of Dr. Mark Lowenheim is Good. Dr. Lowenheim has been reviewed by 11 patients who have provided 5 comments. The rating is 3.5 out of 5 stars.

Patient Ratings
Ease of Appointment 3.4
Promptness 3.4
Courteous Staff 4.0
Accurate Diagnosis 3.8
Bedside Manner 3.8
Spends Time with Me 3.8
Follows Up After Visit 3.6

Specialties & Research

Dr. Mark Lowenheim, MD is board certified in Pediatric Gastroenterology.

  • He has special expertise in 1 area:
  • Crohn's Disease

Education & Awards

Dr. Lowenheim graduated from Ross University, Edison. He has 1 awards.

Suffolk County Medical Society


Dr. Lowenheim has 8 hospital affiliations:

  • Stony Brook University Hospital 
  • John T Mather Memorial Hospital 


  • Urdu
  • French
  • Italian
  • Polish
  • Hindi
  • Spanish

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Additional Information
Dr. Mark Saul Lowenheim MD is a male Pediatric Gastroenterologist, has 27 years of experience and practices in Pediatric Gastroenterology.
Where does Dr. Mark S. Lowenheim practice?
Dr. Mark Lowenheim has 1 office location.
Dr. Mark Lowenheim practices Pediatric Gastroenterology near Port Jefferson, NY.
See Port Jefferson Pediatric Specialists.