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Richard J. Mangi, MD

Allergy & Immunology • Guilford, CT

★★★☆☆3.1/523 reviews across 3 platforms

Ratings by platform

  • WebMD Care: 3/5 (11 reviews)
  • Vitals: 3.1/5 (12 reviews)
  • US News & World Report (14 reviews)

What patients say

Patients praise

  • Some patients express positive experiences with the doctor

Common complaints

  • Rudeness or unprofessional behavior reported by some patients
  • Poor communication or lack of assistance with specific conditions
  • Wait times and service delays reported in some experiences

In patients' words

"Rude, disrespectful... Did not help me with post nasal drip."

— Vitals

"Very disappointing experience. I waited a long time in pain and was never seen by a doctor."

— Yelp

How these reviews were compiled

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

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