Holiday schedule at The Allergy & Asthma Clinic

In Observance of Memorial Day the Clinic will be closed on Monday, May 25, 2020.

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

Did You Know?

All of our specialists are board certified.

Want an appointment or have a question?


Tell Us How We're Doing!


Video Visits with an Allergy and Asthma Clinic Health Care Provider are Available Now!

We now offer you secure video visits. Video visits can be a convenient way to have a live video telehealth visit and is appropriate for many types of appointments; including follow-up visits, sick visits, review of current medications, new allergy and/or asthma symptoms.

Want a Telehealth video visit, in office appointment or have a question?



Dear Patients:

Over the last 2 months, we have seen the benefits of social distancing measures and aggressive hygienic practices in reducing the spread of COVID-19. As you know, our office has taken very proactive steps to adhere to the guidelines recommended by the CDC, WHO and the San Mateo County Health Department. In compliance with these agencies most recent recommendations, as of Monday, April 20, 2020 we are now requiring all patients coming into the office to wear some sort of mask or facial covering to further diminish the chance spreading COVID-19.

So far our joint efforts have been very successful and your continued understanding during these unprecedented times is greatly appreciated. Together, we will get through these trying events.

We at The Allergy Clinic are, like all of you, very concerned about what we can do to protect ourselves, our families and our community from the current epidemic of COVID-19 (novel coronavirus). We are also particularly mindful of the need now, more than ever, to make sure our patients' allergy and asthma are under the best possible control so that your lungs and respiratory system will be strong enough to withstand any potential infection-- whether it’s COVID-19, the flu, or anything else.

As a medical office providing essential services, we plan to keep The Allergy and Asthma Clinic and Peninsula Allergy and Asthma Associates open, though we will be reducing our days of operation. As of now, we plan to have normal business hours on Mondays, Tuesdays, Thursdays and Fridays in San Mateo and will be closed through the end of the month on Wednesdays and Saturdays. In Daly City, we plan to remain open with normal business hours on Tuesdays and Wednesdays, but will be closed through the end of the month on Fridays. Please understand this situation may change and we encourage you to check our website or call the office for the latest information on our hours of operation.

COVID-19 targets the lungs, which is why individuals who are most at risk of complications are those whose lungs have already been weakened by environmental toxins (such as smoking, air pollution, etc), disease (including allergic disease), and age (over 60). We have already asked all patients to refrain from coming into the office if they have any indication of possible COVID-19 infection. We want you to know of the additional steps we are taking in our office to further protect you. They are:

1) As we have always done, we are wiping down and disinfecting each exam room after every patient encounter. Additionally, our reception areas are being disinfected on an hourly basis, including pens. For the time being, we have also removed all magazines, so you may want to bring your own pens and reading material. As you know, we have wi-fi available.

2) All staff members have their temperatures taken when they report to work and, effective March 16, we are taking the temperature of all patients when they enter the office for allergy injections. (We already were taking the temperatures of all patients scheduled for an office visit.) We will also be taking the temperature of anyone else entering the office for any reason (for ex., persons accompanying patients, delivery people dropping off supplies, etc.).

Anyone with a fever will not be allowed to receive an allergy injection or enter the office for a scheduled appointment. Anyone with a fever or any other symptoms of COVID-19 should not come into the office as they will not be allowed to remain in the office but will instead be advised to consult with their primary care physician, as recommended by the CDC.

3) Masks will be required for any patients who have a cough.

4) All staff have been notified of travel restrictions, and will need to self quarantine for 14 days if they have traveled overseas or if they have traveled anywhere by airplane. We also recommend to our patients that they avoid all non-essential air travel at this time.

5) Staff always wear gloves when giving injections and always wash their hands after they have contact with a patient while not wearing gloves (ie, in an exam room).

Your health and safety are our top priority. As we do our part to stop the spread of COVID-19, we ask that you please call our office to reschedule any appointments if you have or have had any symptoms of fever, especially if associated with cough and/or shortness of breath within the past 3 weeks. Also, anyone who is sick and plans to accompany a patient to the office should not come into the office.

We realize the above rules and schedule changes may be inconvenient for some patients, especially at this time of year when allergies tend to flare because of increasing pollen counts. However, we appreciate your understanding that the reason we are doing this is to protect the health and well-being of all of our patients, and to ensure we have adequate staffing to accommodate these exceptional times.

We will continue to monitor the data and recommendations from the CDC and WHO, as well as local health authorities, and keep you informed as more information becomes available.

Prepare for Spring Allergies Now

PollenWinter is a great time to prepare for spring allergy season. If allergen immunotherapy is or has been recommended after your allergy skin tests, you can start building your body’s resistance to your specific allergic triggers now to reduce the impact these allergens have on you in the spring months.

We are happy to help you check your specific insurance plan benefits and if there are any referral requirements for your visits. If you have any questions about your insurance benefits or to schedule an appointment, please call (650) 343-4597. You may also Request An Appointment through our website.

EpiPen Shortage

Mylan the maker of EpiPen is encouraging patients who are experiencing difficulty filling their prescriptions for EpiPens to contact Mylan Customer Relations at (800) 796-9526 for assistance in locating alternative pharmacies.

Can Cluster Immunotherapy accomplish a month's worth of immunology injections in just one 2 hour visit?

Allergy Shot Hours

Wednesday: Temporarily Closed

Saturday: Temporarily Closed 

We are open for allergy shots on Mondays, Tuesdays and Thursdays from 9:00am-5:30 Please arrive at the Clinic by 5:30pm to ensure you will be able to receive your shot.

Fridays from 7:30am to 3:30pm. Please arrive at the Clinic by 3:30pm to ensure you will be able to receive your shot.

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.

15 Years Top DoctorDr. Andrew Engler was chosen as Top Doctors of San Mateo 15 Years in A Row by Castle Connolly Top Doctors





We are proud to announce that Dr. Engler was chosen as Top Doctors of San Mateo 2020 by Castle Connolly Ltd

San Mateo Top Doctors 2016A health care research and information company that has made it its mission to help patients find the best healthcare. Dr. Engler was chosen based on recommendations from licensed physicians and other medical professionals in the area. Candidates were 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.

Dr. Engler was featured on KPIX news this week

El Niño Winter Contributing To Bad Allergy Season In California.

Do your allergies seem worse this year? You’re not imagining it, and recent wet weather is playing a role. Sharon Chin reports. (4/12/16)

Disclaimer: The Allergy & Asthma Clinic does not condone or affiliate with any advertisements that may accompany this video presentation

Watch Dr. Engler on KPIX News here

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!

Appointments and Requests

New and Current Patients wanting to contact us online, please use our online appointments and questions form >>


We Want Your Feedback

Tell us how we're doing by submitting a Testimonial and/or Take Our Survey

Submit A Testimonial
Take Our Survey

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.

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.