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Top Bay Area Allergy & Asthma Specialists | Dr. Andrew C. Engler

Allergy/AsthmaBrea, CA

★★★★★4.9/5301 reviews across 3 platforms

Ratings by platform

  • Healthgrades (Dr. Andrew C. Engler): 4.9/5 (76 reviews)
  • WebMD (Dr. Andrew C. Engler): 5.0/5 (27 ratings)
  • St. Jude Heritage Brea - Allergy & Asthma: 4.9/5 (198 ratings)

What patients say

Patients praise

  • Dr. Andrew C. Engler is highly regarded for being thorough, knowledgeable, and personable with excellent patient care.
  • St. Jude Heritage Brea Allergy & Asthma department is well-rated for expert care and professional staff.
  • Patients consistently praise the welcoming and efficient nature of the medical teams at these locations.

Common complaints

  • Some reports of unsatisfactory experiences, including potential misdiagnoses and lack of clarity on treatment timelines at Allergy & Asthma Medical Group of the Bay Area (not necessarily linked to Dr. Engler)

In patients' words

"During the appointment, Dr. Engler was a standout physician. He explained things clearly, made sure to provide a structured presentation of options, and made me feel taken care of."

WebMD Patient Review

"I would highly recommend Dr. Moon for any allergy problems. I was impressed with his knowledge in answering my questions and finally got some results after seeing many other allergists in the area who didn't help my symptoms at all."

Vitals Patient Review (Dr. Alfred O. Moon, Brea)

How these reviews were compiled

Synthesized from public patient-review platforms as of Jul 10, 2026 — sources: [1][2][3][4][5][6][7][8].

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