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Dr. Mark Lowenheim

3.3

About this business

Location details

200 Belle Terre Rd, Port Jefferson, NY, 11777, United States

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WeekdayScheduleStatus
Mon9:00 a.m. to 6:00 p.m.
Tue9:00 a.m. to 6:00 p.m.
Wed9:00 a.m. to 6:00 p.m.
Thu9:00 a.m. to 6:00 p.m.
Fri9:00 a.m. to 6:00 p.m.
SatClosed
SunClosed
3.314 reviews
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Anonymous's profile image
3 years ago

I brought my 3 month old to Dr Lowenheim for poor weight gain. he basically said it was normal and blamed it on the inflated weight at birth due to my gestational diabetes. He didn’t change his diet nothing he prescribed a medication that made my babies reflux worse. fastest initial visit ever!!!!!. I went to another doctor for a second opinion and he diagnosed my baby as failure to thrive (he was the 2nd percentile)and gave me a plan and diet change. fast forward to my baby in the 75th percentile and has since gained 8lbs. ... read more

Kim Van Helmond's profile image
Kim Van Helmond 
5 years ago

My daughter has been seeing him for 4 years!! Since she was 2 years old she has had issues!! He always gets us in and is great with her!! We love him and would definitely recommend him to friends!! 

Anonymous's profile image
6 years ago

Dr. Lowenheim is very arrogant. He misdiagnosed my child, and after repeated phone calls and questions, he continued to be rude, curt, and only kept suggesting a repeat endoscopy and colonoscopy, even though my child’s other doctors advised strongly against it. He acts as if he is always in a rush and your questions are bothersome to him. Finally left his practice, followed up with a different Ped GI, and in onlyone visit got all the answers we needed and, more importantly, a correct diagnosis. 

Frequently asked questions about Dr. Mark Lowenheim

How is Dr. Mark Lowenheim rated?

Dr. Mark Lowenheim has a 3.3 star rating with 14 reviews. 

When is Dr. Mark Lowenheim open?

Dr. Mark Lowenheim is closed now. It will open on Monday at 9:00 a.m. 

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