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Best Allergist and Immunologist in Phoenix, Chandler, Surprise ...

Allergy and ImmunologyGlendale, AZ

★★★★★4.9/5138 reviews across 4 platforms

Ratings by platform

  • Healthgrades, WebMD: 4.0 to 5.0 out of 5 stars (varies by platform) (Varies (e.g., 31 reviews for Dr. Shah; 15 reviews on WebMD))
  • Healthgrades: 4.5 out of 5 stars (8 reviews)
  • FindaTopDoc: 5.0 out of 5 stars (11 reviews)
  • Premier Allergy Asthma & Immunology, PLLC (Internal): 4.89 out of 5 stars (88 reviews)

What patients say

Patients praise

  • Professional and polite bedside manner
  • Knowledgeable and thorough in treatment planning
  • Positive impact on quality of life and symptom control
  • Effective diagnostic process
  • Courteous and friendly office staff (at specific locations)

Common complaints

  • Staff communication issues (unresponsive, poor phone service)
  • Complaints about billing and administrative processes
  • Some patients reported not seeing the physician directly (seeing PAs instead)
  • Mixed experiences regarding bedside manner or feeling dismissed

In patients' words

"Dr. Leyko is fantastic! He spent a long time with me, helping me figure out a comprehensive plan... something other doctors tend not to do."

Allergy Asthma Clinic Patient Reviews

"This person, I'm not even going to call her a doctor, needs to be retrained on direct patient care. her staff... I was insulted by her staff."

Healthgrades Review (Dr. Amy Shah)

"After seeing multiple doctors, Dr Khalsa was able to swiftly diagnose my issue and provide resolution in an expedient way."

Premier Allergy Asthma & Immunology Testimonials

"I have only dealt with Dr Connie Hsu's PAs and have never seen Dr Hsu in person... I have since found another practitioner and have had much better care."

Healthgrades Review (Dr. Connie Hsu)

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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