Meet Our Specialists

Andrew C. Engler, M.D.

Andrew C. Engler, M.D. is the Medical Director of The Allergy and Asthma Clinic in San Mateo, California.

Dr. Andrew EnlgerDr. Engler received his Bachelor of Art degree, with distinction, from Stanford University in 1978. He was elected to the Phi Beta Kappa society when he was still a junior in college. After 2 years as a medical student at Yale, he returned to Stanford where he received his M.D. degree in 1982. He went on to complete his internship and residency at Stanford University Hospital and is Board Certified in Internal Medicine. Dr. Engler then received several years of additional training in Allergy, Asthma and Immunology. He founded The Allergy Clinic in San Mateo in 1987.


Bhushan C. Gupta, MD

Dr. Bhushan GuptaDr. Bhushan C. Gupta is Board Certified by the American Board of Allergy and Immunology and the American Board of Pediatrics. He is a member of the American Academy of Allergy Asthma and Immunology.  Dr. Gupta specializes in adult and pediatric allergy and asthma and did his fellowship in adult and pediatric allergy and immunology at St. Vincent’s Hospital in New York. 




Our Nurse Practitioners

Brooke Leon, N.P.

Brooke Leon NPBrooke Leon earned her Bachelor’s degree in Health Sciences with a minor in American Sign Language from California State University East Bay in June of 1994. She then received her Bachelor’s degree in Nursing in May of 1996 and achieved her Master’s Degree in Nursing as a Family Nurse Practitioner at the University of San Francisco in May of 2000. While completing her Master’s degree, she was employed as a registered nurse at the Allergy and Asthma Clinic where she was able to work closely with our medical director, Dr. Engler. During this time, she had the opportunity to assist in the management of patients and help provide ongoing care and education to patients with acute and chronic allergic diseases. As a board certified Nurse Practitioner, she is a member of the Sigma Theta Tau Nursing Honor Society and is a frequent lecturer on the subject of allergy and asthma. She has provided a number of educational seminars to many health care professionals in the community, as well as in other cities on the West Coast.

When she is not taking care of patients, Brooke enjoys exercising, baking and cooking. She also loves to participate in outdoor activities and travel with her husband and 2 children.