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In order to keep the community as safe as possible, we are currently converting as many appointments as appropriate to VIRTUAL VISITS at this time. We will make further updates as the situation evolves. To schedule a virtual visit, please call our office at 301.972.3709.


News & Announcements


We would like to address some questions and concerns that have been brought up by our patients recently regarding the COVID-19 vaccine. Due to reported cases of anaphylaxis to the vaccine,… Read More

Coronavirus (COVID-19) Safety Precautions

ATTENTION ALL PATIENTS: Our office is closely monitoring the Coronavirus (COVID-19) outbreak. We are taking extra measures to regularly clean and disinfect our waiting rooms and patient care areas beyond… Read More

Revised shot schedule for December and January

In observance of the upcoming holidays, please note the following updates to our December/January shot schedule: Tuesday, December 24th (CLOSED FOR SHOTS) Wednesday, December 25th (CLOSED FOR SHOTS) Thursday, December 26th (Open… Read More

Proudly Part of Privia Health

Germantown Allergy and Asthma is proudly part of Privia Health. Privia connects us with leading doctors in the community to transform healthcare by delivering high-quality, coordinated care that is centered on our patients.

To learn more about the resources that help you manage your healthcare, or to find other Privia doctors, visit their website.

"Just transferred from another allergist to Dr. Kao. Wow, what a difference. He took so much time with us and did a great job explaining everything to me and my 8-year-old son. The first time my son has left the allergist saying he really loved the doctor. Office and nursing staff are just as kind and helpful. The best part of all....they were on time and so efficient!"

Germantown Office


19851 Observation Drive Suite 375
Germantown, MD 20876 Get Directions



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Patient Portal

Access your personal health information and test results, securely message your care team, and manage payments, all from one spot and at your convenience, 24/7.

  • See your provider's openings and schedule appointments.
  • Review prescription medications and request renewals.
  • View payment history and pay current invoices.
Patient Portal