Fresno:7407 N Cedar Ave # 102, Fresno, CA 93720(559) 369-4421Fax (559) 369-4418
Merced:105 W El Portal Dr, Suite B, Merced, CA 95348(209) 349-8526Fax (209) 349-8518
Services
Allergy TestingSeasonal & Environmental AllergiesAsthma CareSinus & CongestionImmunotherapySpirometry / PFT
Conditions
Food AllergyPediatric AllergyChronic CoughContact DermatitisEczemaHivesStinging Insect AllergyImmune Deficiency
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Home  /  About

Care from a team that knows the Valley's air.

Sierra Allergy, Asthma & Sinus Center brings board-certified allergy & immunology care to Fresno, Merced, and the communities around them.

Dr. Bashir, board certified allergy and asthma specialist at Sierra Allergy
Meet your allergist

Muhammad Hassan Bashir, MD

Dr. Bashir is board-certified in internal medicine and completed his allergy & immunology fellowship at Stanford University Medical Center. With more than 15 years of experience, he pairs evidence-based care with the time to listen.

He and the team work closely with each patient — children and adults alike — to understand triggers and build a plan that fits real life in the Central Valley.

Board-certifiedStanford fellowship15+ years
Our practice

What you can expect

Time to listen

We take the time to understand your history before we recommend anything.

Evidence-based care

Up-to-date allergy & immunology care, explained in plain language.

Bilingual & family-first

English & Spanish care for infants through adults.

From our community

Trusted across Fresno & Merced

★★★★★

"The team took time to actually listen and explain what was going on. I left with a clear plan instead of more questions."

Verified Google review
★★★★★

"Testing was quick and the staff were great with my son. So glad to have a specialist close to home."

Verified Google review
★★★★★

"Friendly, professional, and on time. They explained my options clearly and never rushed the visit."

Verified Google review

Rated 4.9 on Google. Reviews are representative and shown without any patient-identifying information.

Let's work together.

Book a visit and we'll work with you to understand your triggers and build a plan designed to help.

General information only — not medical advice. Please consult a qualified provider for assessment. Sierra Allergy works with many insurance plans; contact us to verify your coverage.