Know Who We Are

At Sierra Allergy Asthma and Sinus Center, our top priority is your health and well-being. With locations in Fresno and Merced, California, our team is dedicated to providing compassionate and comprehensive care for patients with allergy and immunology disorders. From the moment you walk through our doors, you’ll be greeted with warmth and respect by our friendly staff. We understand that dealing with allergies and respiratory issues can be challenging, which is why we take the time to listen to your concerns and develop personalized treatment plans tailored to your unique needs. Our experienced allergists use state-of-the-art testing and diagnostic tools to accurately identify your triggers and provide effective solutions to manage your symptoms. Whether you’re seeking relief from seasonal allergies, asthma, or sinus problems, you can trust Sierra Allergy Asthma and Sinus Center to provide the highest level of care. Contact us today to schedule a consultation and take the first step towards a healthier, happier you.

Meet the Doctor

Muhammad Hassan Bashir, MD is a distinguished allergist and immunologist at Sierra Allergy Asthma and Sinus Center, renowned for his unwavering commitment to patient care and medical excellence.
With over 10 years of experience, Dr. Bashir has been serving the Central Valley with his expertise in allergy and immunology diseases. He is deeply passionate about helping individuals overcome their allergy and immunology challenges.
Dr. Bashir obtained his fellowship training in allergy and immunology at Stanford University Medical Center. Patients commend his compassionate approach, attentive listening, and personalized treatment plans that cater to their individual needs. Dr. Bashir is dedicated to serving the Fresno and Merced communities, striving to enhance the health and well-being of every patient under his care.