Loading listings...
Loading listings...
Is this your business?
Claim your free profile to update your info, respond to reviews, and start getting leads from clients searching for allergist professionals in San Diego.
We verify your phone before sharing it — no spam.
John Bastian is an allergist professional located in San Diego, CA. They specialize in allergy & immunology. With over 19 years of experience, they bring deep expertise to every client.
John Bastian holds an active professional license for your protection.
Looking for an allergist professional in San Diego, CA? Contact John Bastian to discuss your needs and schedule a consultation. Compare ratings and reviews to find the right professional for you.
How much does allergist cost in San Diego, CA?
View 2026 pricing guide with cost breakdowns and local data
Ready to get started?
Compare professionals in your area to find the best fit.
Get a free, no-obligation quote. It takes less than a minute and John Bastian will respond directly.
John Bastian is an allergist based in San Diego, California, with 19 years of experience in the field. He holds an M.D. degree and is registered under license number G39061. His practice focuses on diagnosing and treating allergic conditions and related immunological disorders.
John Bastian holds an M.D., indicating he has completed medical school and the training required to practice medicine. His allergist specialization means he has additional training in diagnosing and managing allergic diseases, asthma, and immune system disorders. His license number (G39061) registers him with California medical authorities, allowing him to prescribe medications and perform diagnostic procedures within his scope of practice.