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

REVISED SHOT HOURS FOR WEEK OF THANKSGIVING (11/25-11/29)

ATTENTION ALL SHOT PATIENTS! In observance of the Thanksgiving holiday, we will have revised shot hours for week of 11/25 – 11/29 : Mon, 11/25 (9 am – 12 pm… Read More

UPDATED SHOT HOURS FOR WEEK OF FEBRUARY 18TH

Dear all shot patients, We will have updated shot hours for week of February 18th as Dr. Kao will be attending the annual Allergy conference. Please note the following changes… Read More

Congratulations to Dr. Leon Kao for making the 2018 Washingtonian Top Doctors list!

It is our pleasure to announce that Dr. Kao has been recognized by his peers as one of Washingtonian’s Top Doctors in Allergy and Immunology for 2018!

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!"
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Germantown Office

Address:

19851 Observation Drive Suite 375
Germantown, MD 20876 Get Directions

Contact:

301.972.3709 301.515.3612 Secure Message via Portal

Hours:

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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