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Allergy Asthma & Sinus Center | Leesburg | Sterling | Purcellville VA logo

Allergy Asthma & Sinus Center | Leesburg | Sterling | Purcellville VA

Allergy and ImmunologyLeesburg, VA

★★☆☆☆1.5/52 reviews across 2 platforms

Ratings by platform

  • WebMD: 1 out of 5 (on WebMD) (1)
  • Yelp/MapQuest: 2 out of 5 (on Yelp/MapQuest) (1)

What patients say

Patients praise

  • compassionate and knowledgeable physicians
  • effective treatment plans for allergies, asthma, and skin conditions
  • staff described as friendly and welcoming in many instances
  • thorough explanations of testing procedures and results

Common complaints

  • perceived "weaselly" or "shady" business practices related to billing for forms and phone consultations
  • reports of unreturned phone calls
  • unfriendly interactions with staff regarding scheduling errors

In patients' words

"The quality of care is fine and acceptable, but the business practices that we always felt were weaselly have turned shady. We've been coming here for years... and were always frustrated that we had to pay each school year for the doctor's signature on the required school forms. It got worse now when we were forced to pay a second co-pay for the allergist to share the lab results of a blood test over the phone."

Patient review on LocalityBiz

"Doesn't return phone calls. Unsure why they would want to do business."

Patient review on WebMD

"Dr. Thai has been a delight to work with over the last several years. With her guidance she has coached me on controlling my asthma and breathing issues. I believe she gets as much pleasure out of my improvement as I do!"

Patient review on LocalityBiz

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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