Click Here for holiday closures.

Monday 9am – 5pm
Tuesday 9am – 4pm
Wednesday 9am – 4pm
Thursday 9am – 4pm
Fri 9am-12pm
Sat Closed
Sun Closed

Dr. Howland has provided this handy link for anyone with questions about the Covid-19 vaccine.

ACAAI Guidance on Risk of Allergic Reactions to COVID-19 Vaccines

Our office hours for injections have temporarily changed as shown. We will be keeping our new hours until further notice.
Discover more:
View Injection Hours →
Dr. William Howland is retiring from Allergy and Asthma Center of Austin on November 1st, 2021. Dr. Michael Saavedra will assume the care of Dr. Howland’s patients on November 1st.
Dr. Saavedra is a double board-certified allergist with Allergy Partners PLLC, a national group of 140 allergists. He will continue the personalized state-of-the-art treatment you have received from Dr. Howland.
Your medical records will automatically transfer to Dr. Saavedra. If you would like a copy of your medical records, please call 512-345-7635 or speak to the receptionist to receive a Medical Records Release Form.
Dr. Howland wishes you a long and healthy life.

For the safety of our patients and staff:

We are asking ALL patients to wear masks!


Due to the Corona virus we have changed our office hours.  We are seeing patients in the office and for telemedicine appointments. Every patient entering the office will have their temperature taken prior to being seen.

To protect the health of all of our patients from the corona virus do not come to the office if:

  • you have a fever
  • you have been exposed to the virus
  • you have traveled to an area with the virus

If you have fever, cough and significant shortness of breath, isolate yourself.  Contact your primary doctor or the emergency room for instructions if you are severely ill.

Dr Harden’s patients – click here for more information on our office.

Click Here for map and directions.


    Download Forms →

    Allergy and Asthma Center of Austin

    11645 Angus Rd, A1, Austin Texas 78759

    We are located in the Twelve Oaks Professional Center on Angus Rd 1 blocks south of Duval. We are in building A, Suite 1. There are exits to Angus Rd on Mo Pac and 183.

    Best Possible Care

    Our staff takes extraordinary measures to ensure the quality of your medical treatment. By offering extended hours for injections, we are able to serve you at your convenience.

    Full Service

    From food allergies to hay fever and mountain cedar (cedar fever) treatment, AACA offers a wide array of allergy treatment services. Schedule a visit and ask our doctors how we can help you.

    Allergy Information

    Pollen Information

    Allergy Testing

    Allergy Shots

    Food Allergies


    Cold or Allergy?

    Pollen-Food Syndrome

    Stinging Insects

    SLIT – Under the tongue treatment

    Beta Blockers

    Austin Pollen Forecast