• Now accepting new patients

    Bringing You Care You Can Count On

    At Germantown Allergy and Asthma, Dr. Kao and his staff will bring you high quality care that you can count on. Our innovative medical practice is located in Germantown, MD, and we see both adults and children. We combine top clinical expertise, a wellness focus, and access to 21st century technologies to offer you a better healthcare experience.

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News & Announcements

  • We have officially moved!!!

    Our new address is 19851 Observation Drive, Suite 375, Germantown, MD 20876. Free parking is available in the parking garage next to the medical office building. Please call our office… Read More


    We are excited to announce that we will be moving to a new location on October 31, 2017. Our brand new office will be located in the medical building next… Read More

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Proud to be Part of Privia Medical Group

Germantown Allergy and Asthma is a proud member of Privia Medical Group. The best doctors in our community have joined together to form Privia Medical Group (PMG), a multi-specialty, high-performance medical group that puts patients first. Our physicians are united by the mission of providing better, more coordinated care for their patients.

To learn more about Privia Medical Group and find other Privia doctors, please visit our website.

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"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!"
Verified Patient

Germantown Office


19851 Observation Drive Suite 375
Germantown, MD 20876


301.972.3709 301.515.3612 Secure Message via Portal


Patient Portal

Privia Medical Group offers patients personalized and secure 24/7 online access to their health records, as well as the ability to communicate with your medical care team through our patient portal.


Schedule Appointments

The easiest way to book an appointment with your provider.

Request Prescriptions

Review prescription medications and request prescription renewals.

Secure Messages

Send and receive secure messages with your medical care team.

View Your Records & Tests

Quick access to your secure electronic medical record and test results.

Pay Your Bill

Pay your invoices by credit card, securely and conveniently.