The Allergy and Asthma Clinic
Andrew C. Engler, M.D.
Medical Director
290 Baldwin Avenue
San Mateo, California 94401
(650) 343-4597
Map and Directions

Holiday Schedule:

In observance of Thanksgiving Day 

Closed Thursday November 26th and Friday November 27th. Open Saturday November 28th, 9am-12pm for Allergy Shots

In observance of Christmas

Closed Thursday December 24th and Friday December 25th. Open on Saturday, December 26th, 9am-12pm for allergy shots.

In observance of New Year’s Day

Open Thursday December 31st from 9am -12pm for allergy shots.

Closed Friday January 1st.

Open on Saturday January 2nd, 9am-12pm for Allergy Shots.

Did You Know?

All our specialists are board certified. Our new doctor, Dr. June Zhang, is "double-board certified" in both the American Board of Pediatrics and the American Board of Allergy and Immunology.


Appointments, Questions, Referrals, Survey, & Bill Pay

Cluster Immunotherapy

Welcome to The Allergy & Asthma Clinic

Allergists in San Mateo, California's Bay Area

People with allergies and asthma should know that there are many treatment options available that can help minimize symptoms, allow you to feel well, be active and live a healthy, productive life.

We are pleased you have chosen The Allergy & Asthma Clinic. We specialize in helping people who suffer from allergic disorders. We are committed to the best possible health care for all of our patients. We pride ourselves on paying lots of attention to those little details that we know can make a big difference. Our office is at 290 Baldwin, at the corner of Ellsworth,down the street from Mills Hospital. We want to make it as easy as possible for you to get your allergy care at our office. If there are any concerns that were not answered during your visit, or if you have any questions about your treatment, we hope you will let us know.

Sanofi US Issues Voluntary Nationwide Recall of Auvi-Q Due to Potential Inaccurate Dosage Delivery

This recall involves all Auvi-Q devices currently on the market and includes both the 0.15 mg and 0.3 mg strengths. As of October 26, 2015, Sanofi has received 26 reports of suspected device malfunctions in the United States and Canada, none of which have been confirmed. No fatal outcomes have been reported.

Patients should immediately obtain a prescription for an EpiPen/EpiPenJr. device. If you were previously prescribed AuviQ by our office, please contact us immediately to get a replacement EpiPen device. After obtaining your adrenaline injector device from the pharmacy, please log onto to get information on the reimbursement process outlined by Sanofi.

We are proud to announce that our Secure Online Patient Portal is now available!

If your a current patient, and you would like to obtain your username and password, please call our office at (650)-343-4597 to create your login or get more information about our new Secure Online Patient Portal.

If you have already obtained your username and password, please click the button below:

Here at Allergy and Asthma Clinic we are focused on your health. We are working to create a more efficient and comprehensive experience for you here at are our practice!

Secure Patient Appointments and Requests

New Patients, Current Patients, and Referring Physicians >> Try our CareSubmit secure online Appointments, Questions/Requests, Online Patient Referrals, Survey, and Online Bill Pay!

CareSubmit Requests and Referrals

What is an Allergy? - Basic Principles of Allergy

Is it a Cold or Allergies?

Allergic conditions account for 40% of absences in the work field and many of our patients have noted that although they’re not “sick” their symptoms can affect their work and even the quality of their life. Allergies occur when your immune system goes haywire. Our body protects itself from invading germs and other organisms with a complex set of proteins, blood cells and other defenses which work together to form the immune system.

Dr. Engler Chosen as One of the Top Allergists in the Bay Area

San Francisco Magazine Top Doctors 2015We are proud to announce that Dr. Engler was among 1 of 13 allergists chosen as “Our Best Doctors” in the January, 2015 edition of San Francisco Magazine. The list of doctors was chosen from nearly 3000 nominees in the 8 Bay Area counties based on recommendations from licensed physicians and other medical professionals in the region.  Each candidate was evaluated based on their educational and professional experience, years of experience, board certification, quality of medical degree, hospital affiliations and whether they had received any disciplinary actions.  San Francisco Magazine worked in collaboration with Castle Connolly Ltd—a health care research and information company that has made it its mission to help patients find the best healthcare.

Our associated physician, Dr. June Zhang, has a special interest in treating children with food allergies through a procedure called "Oral Food Challenge".

Our associate physician, Dr. June Zhang, has a special interest in treating children with food allergies. A procedure called “Oral Food Challenge” is currently being offered at our clinic and those patients that have undergone this safe, closely monitored procedure have been able to answer many questions regarding their allergy.  Learn more about this procedure by clicking on the button below.

Relief you need, specialized care you deserve!

Our specialists can effectively control your asthma and allergies by accurate diagnosis, skill and patience.

Dr. Engler, as featured on "Eye on the Bay"

We pride ourselves on paying attention to the little details that make a big difference.