Leonard C. Altman, MD

Leonard Altman

“…The level of intellectual curiosity and authentic interest in the actual source of my problem as displayed by Dr. Altman puts him in the 99th percentile of MDs I’ve known… And his medical intuition is amazing, meaning he has a wealth of knowledge and has seen pretty much everything.  I so appreciate such care, kindness, and wisdom.”

– David, Seattle

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Dr. Altman is a Board Certified Allergist and has been with Northwest Asthma & Allergy Center since 1984. After receiving his medical degree in 1969 from Harvard Medical School, he trained at both University of Washington and the National Institute of Health (NIH) in Bethesda, Maryland. Dr. Altman holds academic positions as Clinical Professor of Medicine in the Division of Allergy and Infectious Diseases, as well as Affiliate Professor of Oral Biology and Environmental Health at the University of Washington School of Medicine. In addition to clinical practice, he has long been involved in medical research through both the University of Washington (since 1975) and Associated Scientists to Help Minimize Allergy (ASTHMA), a nonprofit clinical research center in Seattle, where he serves as a member of the Board.

He enjoys the challenge of difficult cases and teaching younger physicians. Dr. Altman enjoys incorporating new cutting edge treatments into patient care and taking on complex and difficult allergic conditions. He also organizes the Teaching Series at University of Washington, which is a well-respected and collegial information exchange for allergists across  Washington and neighboring states.

In his free time, Dr. Altman enjoys and collects classic cars. He has three adult children; two are physicians and one is an academic allergist at the University of Washington. He has one granddaughter and is hoping for more!  

Dr. Altman sees patients in our Seattle, Renton, Redmond, and Everett offices.


Medical School: Harvard Medical School
Residency: University of Washington
Fellowship: National Institutes of Health

Professional Memberships & Affiliations

Fellow, American Academy of Allergy, Asthma and Immunology (AAAAI)
Fellow, American College of Allergy, Asthma and Immunology (ACAAI)
Washington State Medical Association (WSMA)
Washington State Society of Allergy, Asthma & Immunology (WSSAAI)

Awards and Recognition

Top Doctor by Seattle Magazine and Seattle Met