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Manhattan Gastroenterology: NYC Gastroenterologist

GastroenterologyManhattan, NY

★★★★☆3.9/553 reviews across 2 platforms

Ratings by platform

  • Aggregate across platforms (Practice-reported): Consistently promoted by the practice as having over 17,000 verified 5-star reviews across multiple platforms (Cited as 4,000 on Google, 11,500 on ZocDoc, and 1,500 on Shopper Approved)
  • 99consumer.com: 3.7 out of 5 (23)
  • Yelp/Yahoo Local: Approximately 4 out of 5 (Varies by listing (e.g., 30-37 reviews))

What patients say

Patients praise

  • doctors are described as knowledgeable, thorough, and good listeners
  • friendly, supportive, and professional office staff
  • clean and well-maintained office facilities
  • successful and well-managed medical procedures (e.g., colonoscopies)

Common complaints

  • billing and insurance management issues
  • unexpected charges for services perceived as covered preventative care
  • occasional reports of long wait times or rushed visits
  • lack of follow-up from staff regarding test results or next steps

In patients' words

"Dr Dann is wonderful. I have been battling some very complex and painful chronic GI issues and he took the time needed to fully understand my situation and that made me feel very comfortable is in care."

Trustindex.io Review

"Dr Dann was great and medically my colonoscopy was successful. However the billing/insurance management of this office is horrible and I will never have a procedure here again."

Yahoo Local Review

"Do NOT attend this practice without verifying your insurance yourself. I saw this practice ONE time. They billed me right after and again over 1.5 years later for the same service they stated was..."

Yelp Review

How these reviews were compiled

Synthesized from public patient-review platforms as of Jul 11, 2026 — sources: [1][2][3][4][5][6][7][8].

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